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BEGIN:VEVENT
SUMMARY:TBD: Quantum Simulation of Field Theories
DTSTART;VALUE=DATE-TIME:20180914T191000Z
DTEND;VALUE=DATE-TIME:20180914T195000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42049@indico.fnal.gov
DESCRIPTION:Speakers: Martin Savage (Institute For Nuclear Theory)\n\nhttp
s://indico.fnal.gov/event/17199/contributions/42049/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42049/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Closing Remarks
DTSTART;VALUE=DATE-TIME:20180914T195000Z
DTEND;VALUE=DATE-TIME:20180914T203000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42050@indico.fnal.gov
DESCRIPTION:Speakers: John Preskill (Caltech)\n\nI will review the current
status of quantum computing research\, and\nassess the prospects (both ne
ar-term and long-term) for advancing\nfundamental physics through simulati
ons of quantum field theory using\nquantum computers and quantum simulator
s.\n\nhttps://indico.fnal.gov/event/17199/contributions/42050/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42050/
END:VEVENT
BEGIN:VEVENT
SUMMARY:OpenFermion-Cirq VQE Hands On Tutorial
DTSTART;VALUE=DATE-TIME:20180914T133000Z
DTEND;VALUE=DATE-TIME:20180914T153000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42052@indico.fnal.gov
DESCRIPTION:Speakers: Kevin Sung (Google)\n\nhttps://indico.fnal.gov/event
/17199/contributions/42052/
LOCATION:Hornets Nest (WH8)
URL:https://indico.fnal.gov/event/17199/contributions/42052/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The IBM-Q Initiative as a Resource for HEP Quantum Computing
DTSTART;VALUE=DATE-TIME:20180914T154500Z
DTEND;VALUE=DATE-TIME:20180914T162500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42053@indico.fnal.gov
DESCRIPTION:Speakers: Patrick Dreher (NC State University)\n\nThis is the
first of two talks on the IBM-Q quantum computing systems. The presentati
on will briefly summarize the concept of an IBM-Q Hub and the preparations
at NC State for implementation of the only university-based IBM-Q Hub in
the Americas. There will be a brief discussion of the role that the Hub w
ill play in forming research partnerships with industry and the preparatio
ns for building a university based educational role for quantum computing.
The talk will also introduce the Hub’s capabilities and how they can p
otentially be focused toward high energy physics problems.\n\nhttps://indi
co.fnal.gov/event/17199/contributions/42053/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42053/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fermionic Systems and Quantum Computing
DTSTART;VALUE=DATE-TIME:20180914T162500Z
DTEND;VALUE=DATE-TIME:20180914T170500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42054@indico.fnal.gov
DESCRIPTION:Speakers: Antonio Mezzacapo (IBM)\n\nIn this talk I will revie
w methods for simulating fermionic systems on quantum computers\, present
ideas on how quantum resources can be optimized\, and how to deal with noi
se rates in current quantum processors. I will then demonstrate the capabi
lity of the IBM open-access software Qiskit Aqua\, a full-stack quantum co
mputing framework.\n\nhttps://indico.fnal.gov/event/17199/contributions/42
054/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42054/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A Universal Training Algorithm for Quantum Deep Learning
DTSTART;VALUE=DATE-TIME:20180914T170500Z
DTEND;VALUE=DATE-TIME:20180914T174500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42055@indico.fnal.gov
DESCRIPTION:Speakers: Guillaume Verdon (Institute for Quantum Computing)\n
\nIn recent months\, the field of Quantum Machine Learning (QML) has had\n
numerous advances and a rapid growth of interest from academia and\nindust
ry alike. Recent works have focused on a particular class of QML\nalgorith
ms\, the so-called quantum variational algorithms (often called\nquantum n
eural networks)\, where an optimization over a set of\nparametrized quantu
m circuit ansatze is performed in order to learn\ncertain quantum states o
r quantum transformations. The explicit\nconnection between these quantum
parametric circuits and neural\nnetworks from classical deep learning had
so far remained elusive. In\nthis talk\, we will establish how to port ove
r classical neural\nnetworks as quantum parametric circuits\, and we will
further introduce\na quantum-native backpropagation principle which can be
leveraged to\ntrain any quantum parametric network. We will present two m
ain quantum\noptimizers leveraging this quantum backpropagation principle:
Quantum\nDynamical Descent (QDD)\, which uses quantum-coherent dynamics t
o\noptimize network parameters\, and Momentum Measurement Gradient Descent
\n(MoMGrad)\, which is a quantum-classical analogue of QDD. We will\nbrief
ly cover multiple applications of QDD/MoMGrad to various problems\nof quan
tum information learning\, and how to use these optimizers to\ntrain class
ical neural networks in a quantum fashion. Furthermore\, we\nwill show how
to efficiently train hybrid networks comprised of\nclassical neural netwo
rks and quantum parametric circuits\, running on\nclassical and quantum pr
ocessing units\, respectively.\n\nTalk based on [\\arXiv{1806.09729}].\n\n
https://indico.fnal.gov/event/17199/contributions/42055/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42055/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Link Lattice Field Theory
DTSTART;VALUE=DATE-TIME:20180914T184500Z
DTEND;VALUE=DATE-TIME:20180914T191000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42056@indico.fnal.gov
DESCRIPTION:Speakers: Richard C. Brower (Boston University)\n\nThe quantu
m link approach to lattice field theory\nrepresents scalar\, gauge and Di
rac fields in terms of single bit/qbit fermion\noperators. This represent
ation is universally equivalent\nto conventional lattice methods for asymp
totically free 2D sigma models\nand 4D gauge theories. I will discuss
the prospect for quantum links\nas a natural basis of quantum computing.\n
\nhttps://indico.fnal.gov/event/17199/contributions/42056/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42056/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Welcome
DTSTART;VALUE=DATE-TIME:20180912T133000Z
DTEND;VALUE=DATE-TIME:20180912T134000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42057@indico.fnal.gov
DESCRIPTION:Speakers: Marcela Carena (Fermilab)\n\nhttps://indico.fnal.gov
/event/17199/contributions/42057/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42057/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Digitization of Scalar Fields for NISQ-Era Quantum Computing
DTSTART;VALUE=DATE-TIME:20180913T145000Z
DTEND;VALUE=DATE-TIME:20180913T151500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42058@indico.fnal.gov
DESCRIPTION:Speakers: Martin Savage (INT)\, Natalie Klco (University of Wa
shington)\n\nWith rapid developments in quantum hardware\, it is increasin
gly important to analyze qubit\, operator and gate requirements to optimal
ly utilize available quantum resources for computation. In this talk\, I
present such an analysis for the digitization of interacting scalar field
theories onto NISQ-era quantum devices\, building upon the foundational wo
rk by Jordan\, Lee and Preskill. Leveraging the Nyquist-Shannon sampling
theorem (introduced in this context by Macridin\, Spentzouris\, Amundson a
nd Harnik building on the work of Somma) as well as the Quantum Fourier Tr
ansform for digitization-improvement\, a feasible number of qubits (\n\nht
tps://indico.fnal.gov/event/17199/contributions/42058/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42058/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Simulating quantum and classical field theories with a quantum com
puter
DTSTART;VALUE=DATE-TIME:20180912T153500Z
DTEND;VALUE=DATE-TIME:20180912T161500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42059@indico.fnal.gov
DESCRIPTION:Speakers: Stephen Jordan (NIST / University of Maryland)\n\nIn
this talk I will describe quantum algorithms by which universal fault-tol
erant quantum computers can simulate quantum and classical field theories.
In the case of quantum field theories the number of quantum degrees of fr
eedom is extensive in the volume of the system to be simulated and the spe
edup over classical algorithms is exponential. As specific applications we
consider phi-fourth theory and the Gross-Neveu model. For classical field
theories the number of qubits needed for the simulation scales only logar
ithmically with the volume. The resulting speedup is polynomial for classi
cal field theories in any fixed number of spatial dimensions but exponenti
al in the number of dimensions. As a specific application we consider wave
equations in three spatial dimensions (such as Maxwell's equations and th
e Klein-Gordon equation). In this case the quantum algorithm achieves a cu
bic speedup while using only logarithmically many qubits\, vs. standard cl
assical methods which have memory requirements that grow linearly with vol
ume. I will conclude with some research directions and open questions rega
rding quantum algorithms for scientific computing.\n\nhttps://indico.fnal.
gov/event/17199/contributions/42059/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42059/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Computing for Feynman Integral Reduction
DTSTART;VALUE=DATE-TIME:20180912T170500Z
DTEND;VALUE=DATE-TIME:20180912T173000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42060@indico.fnal.gov
DESCRIPTION:Speakers: Joshua Isaacson\n\nAt the LHC\, theory uncertainties
are starting to become the dominant uncertainty for certain processes. On
e of the limiting factors is the ability to calculate loop diagrams for hi
gh number of loops. Here I propose a quantum algorithm that can be used to
work towards removing this barrier.\n\nhttps://indico.fnal.gov/event/1719
9/contributions/42060/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42060/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Simulations at Google
DTSTART;VALUE=DATE-TIME:20180912T164000Z
DTEND;VALUE=DATE-TIME:20180912T170500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42062@indico.fnal.gov
DESCRIPTION:Speakers: Zhang Jiang (Google\, inc)\n\nI will briefly introdu
ce the current hardware at Google and their limitations. I will give examp
les on how to construct quantum circuits to simulate model Hamiltonians\,
such as the Fermi-Hubbard model and the Sachdev-Ye-Kitaev (SYK) model. Spa
tially local fermionic problems can become nonlocal after being mapped to
qubit Hamiltonians. I will discuss how lattice gauge field theory can be u
sed to construct mappings that conserve locality.\n\nhttps://indico.fnal.g
ov/event/17199/contributions/42062/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42062/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Formulating Gauge Theories for a Quantum Computer
DTSTART;VALUE=DATE-TIME:20180912T140000Z
DTEND;VALUE=DATE-TIME:20180912T144000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42063@indico.fnal.gov
DESCRIPTION:Speakers: David B. Kaplan (INT\, University of Washington)\n\n
I will discuss some motivations for\nstudying gauge theories on a quantum
computer\, and basic features of\ngauge theories in a Hamiltonian formulat
ion. In particular\, I will\ndiscuss issues regarding Gauss's law and cut
offs on the Hilbert space\,\nboth of which have to be confronted for simul
ations on a quantum\ncomputer.\n\nhttps://indico.fnal.gov/event/17199/cont
ributions/42063/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42063/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fermilab Quantum Science Program
DTSTART;VALUE=DATE-TIME:20180912T134000Z
DTEND;VALUE=DATE-TIME:20180912T140000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42064@indico.fnal.gov
DESCRIPTION:Speakers: Joseph Lykken (Fermilab)\n\nhttps://indico.fnal.gov/
event/17199/contributions/42064/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42064/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Trapped-ion systems for Quantum Simulation of Lattice Gauge Theory
DTSTART;VALUE=DATE-TIME:20180913T182000Z
DTEND;VALUE=DATE-TIME:20180913T184500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42065@indico.fnal.gov
DESCRIPTION:Speakers: Christopher Monroe (JQI University of Maryland)\, M.
Hafezi (JQI University of Maryland)\, J. Zhang (JQI University of Marylan
d)\, A. Seif (JQI University of Maryland)\, A.N. Shaw (JQI University of M
aryland)\, Zohreh Davoudi (JQI University of Maryland)\, Guido Pagano (Uni
versity of Maryland)\n\nLinear arrays of trapped and laser cooled atomic i
ons are among the foremost candidates for realizing quantum simulation and
computation platforms. High fidelity coherent manipulations together with
nearly perfect detection guarantee an unprecedented control over a large
number of qubits\, which can be used to run quantum algorithms [1] or engi
neer Hamiltonians to emulate physical systems of interest [2]. Recently tr
apped ions have been employed for proof of principle demonstrations of qua
ntum simulation of high energy physics\, including the Dirac equation [3]
and the 1+1D Schwinger model [4]. In this talk I will describe the main fe
atures of the trapped-ion quantum hardware and discuss proposals [5\,6] an
d perspectives for an analog implementation of lattice gauge theories in t
rapped-ion systems.\n\nReferences\n\n[1] S. Debnath et al. Nature 536\, 63
(2016)\n\n[2] J. Zhang\, GP\, et al.\, Nature 551\, 601 (2017) \n\n[3] E.
Martinez\, et al.\, Nature 534\, 516 (2016)\n\n[4] R. Gerritsma\, et al.\
, Nature 463\, 68 (2010)\n\n[5] P. Hauke\, et. al.\, PRX 3\, 041018 (2013)
\n\n[6] D. Yang\, et al.\, PRA 94\, 052321 (2016)\n\nhttps://indico.fnal.g
ov/event/17199/contributions/42065/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42065/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Guass's Law and Hilbert Space Constructions for U(1) Lattice Gauge
Theories
DTSTART;VALUE=DATE-TIME:20180912T144000Z
DTEND;VALUE=DATE-TIME:20180912T150500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42066@indico.fnal.gov
DESCRIPTION:Speakers: Jesse Stryker (University of Washington)\n\nMotivate
d by the limited capabilities of near-term quantum computers\,\nwe reconsi
der the Hamiltonian formulation of lattice gauge theories\nand the method
of truncating Hilbert space to render it\nfinite-dimensional. Conventional
formulations lead to a Hilbert space\nlargely spanned by unphysical state
s\; given the current inability to\nperform fault-tolerant large scale qua
ntum computations\, we examine\nhere how one might restrict wave function
evolution entirely or mostly\nto the physical subspace. We consider such c
onstructions for the\nsimplest of these theories containing dynamical gaug
e bosons — $U(1)$\nlattice gauge theory without matter in d = 2\, 3 spat
ial dimensions —\nand find that electric-magnetic duality naturally play
s an important\nrole. We conclude that this approach is likely to signific
antly reduce\ncomputational overhead in d = 2 by a reduction of variables.
We\nfurther investigate potential advantages of regulating magnetic\nfluc
tuations in asymptotically-free theories\, instead of electric\nfluctuatio
ns\, which have been the focus of previous truncation\nproposals.\n\nhttps
://indico.fnal.gov/event/17199/contributions/42066/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42066/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Linear Response on a Quantum Computer
DTSTART;VALUE=DATE-TIME:20180912T161500Z
DTEND;VALUE=DATE-TIME:20180912T164000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42067@indico.fnal.gov
DESCRIPTION:Speakers: Joe Carlson (LANL)\n\nDynamics in quantum systems is
notoriously difficult to treat. We demonstrate\nan exponential speed-up f
or quantum linear response as measured in electron and neutrino\nscatterin
g. I will discuss some very preliminary work we have done and prospects
for\nfurther studies using both classical computers to simulate quantum co
mputers and\nquantum computer applications.\n\nhttps://indico.fnal.gov/eve
nt/17199/contributions/42067/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42067/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Teleportation at Fermilab
DTSTART;VALUE=DATE-TIME:20180912T200500Z
DTEND;VALUE=DATE-TIME:20180912T203000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42068@indico.fnal.gov
DESCRIPTION:Speakers: Maria Spiropulu\, Neil Sinclair (Caltech)\n\nThe Fer
milab Quantum NETwork ([FQNET][1]) aims to produce a fully functional quan
tum network based initially on optical fibers with the capability to distr
ibute time-bin photonic quantum states (qubits) across various distances b
y employing an intrinsic property of a multi-qubit system: entanglement. T
he resulting quantum network system will serve fundamental reserach and f
uture R&D quantum communication technologies and protocols. Here we presen
t the status of the system.\n\n\n [1]: http://inqnet.caltech.edu/fqnet/\n
\nhttps://indico.fnal.gov/event/17199/contributions/42068/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42068/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Information Techniques in High Energy Physics
DTSTART;VALUE=DATE-TIME:20180912T192500Z
DTEND;VALUE=DATE-TIME:20180912T200500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42069@indico.fnal.gov
DESCRIPTION:Speakers: Ning Bao (Berkeley)\n\nIn this talk I will explore t
he possibilities of using quantum\nalgorithms and techniques inspired by q
uantum algorithms to design\nsearches for new physics. This talk will be p
rimarily and\nspeculatively focused on particle physics\, rather than quan
tum\ngravity\, in an attempt to find new potential connections between hig
h\nenergy physics and quantum information science.\n\nhttps://indico.fnal.
gov/event/17199/contributions/42069/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42069/
END:VEVENT
BEGIN:VEVENT
SUMMARY:What we've learned about gravity from quantum error correction
DTSTART;VALUE=DATE-TIME:20180912T184500Z
DTEND;VALUE=DATE-TIME:20180912T192500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42070@indico.fnal.gov
DESCRIPTION:Speakers: Daniel Harlow (MIT)\n\nhttps://indico.fnal.gov/event
/17199/contributions/42070/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42070/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Colloquium: Next Steps in Quantum Science for HEP
DTSTART;VALUE=DATE-TIME:20180912T210000Z
DTEND;VALUE=DATE-TIME:20180912T220000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42071@indico.fnal.gov
DESCRIPTION:Speakers: John Preskill (Caltech)\n\nView [video][1]\n\n\n [1
]: http://vms.fnal.gov/asset/detail?recid=1956899\n\nhttps://indico.fnal.g
ov/event/17199/contributions/42071/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42071/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tensor Network and Cold Atoms Methods for Lattice Gauge Theories
DTSTART;VALUE=DATE-TIME:20180913T134500Z
DTEND;VALUE=DATE-TIME:20180913T142500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42073@indico.fnal.gov
DESCRIPTION:Speakers: Erez Zohar (Max Planck Institute of Quantum Optics)\
n\nQuantum simulation and tensor networks are two many-body physics\nappro
aches rooted in quantum information science\, which have been\nwidely used
recently\, especially in condensed matter contexts\, proving\nto be very
useful. The first suggests to use controllable quantum\nsystems as simulat
ors of others\, which might be otherwise inaccessible\nor hard to solve\;
the latter allows one to efficiently construct and\nstudy (analytically an
d numerically) physically relevant many body\nstates with arbitrary symmet
ries. More recently\, these methods have\nbeen generalized and applied to
high energy physics problems as well\,\nand in particular to gauge theorie
s. In my talk I will discuss the\napplication of those methods for the st
udy of lattice gauge theories\,\nfocusing on the work carried out at the t
heory group at MPQ: first\,\nquantum simulation of lattice gauge theories
with ultracold atoms in\noptical lattices -- suggesting to observe non-per
turbative elementary\nparticle physics in atomic simulators\; and finally\
, gauged fermionic\nPEPS -- a particular tensor network construction of ga
uge invariant\nstates\, involving dynamical gauge fields and fermionic mat
ter\,\nallowing one to use the efficient tensor network toolbox for the st
udy\nof gauge theories\, and extend it\, thanks to the presence of gauge\n
fields\, to numerical studies in $(2+1)$-d and more.\n\nhttps://indico.fna
l.gov/event/17199/contributions/42073/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42073/
END:VEVENT
BEGIN:VEVENT
SUMMARY:An Operator Algebra Approach to Entropy Spread and Quantum Chaos
DTSTART;VALUE=DATE-TIME:20180913T151500Z
DTEND;VALUE=DATE-TIME:20180913T154000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42074@indico.fnal.gov
DESCRIPTION:Speakers: Nicholas LaRacuente (University of Illinois at Urban
a-Champaign)\n\nIn an interacting quantum system far from equilibrium\, in
itially local\ninformation spreads into and melds with its environment. Th
is has many\nmanifestations\, from entanglement spread in quantum quenches
to\nenvironmental coupling induced by quantum channels. The rate of\nentr
opy spread is often difficult to calculate outside of free\,\nperturbative
or holographic regimes. We propose an operator algebra\napproach to the p
roblem. The close connection between Rényi entropies\nand non-commutative
measures has yielded strong results in the channel\nsetting. We apply sim
ilar ideas to the setting of many-body quantum\nquenches\, including in th
e SYK model. We discuss connections to chaos\nand rates of scrambling. For
practical applications\, we consider how\nour methods apply to decoherenc
e in quantum computation and memory.\n\nhttps://indico.fnal.gov/event/1719
9/contributions/42074/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42074/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Contracting Tensor Network on a Noisy Quantum Computer
DTSTART;VALUE=DATE-TIME:20180913T160500Z
DTEND;VALUE=DATE-TIME:20180913T163000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42075@indico.fnal.gov
DESCRIPTION:Speakers: Isaac Kim (Stanford University)\n\nI will argue that
even a medium-scale (50 to \\ensuremath{\\sim}100 qubits) quantum compute
r\ncan significantly speed up the existing tensor network\ncalculations. T
his is because the classical tensor network contraction\nalgorithms have h
it a plateau\, and because the contraction time on a\nquantum computer sca
les much favorably compared to the classical\nmethods. What makes this pro
posal realistic is the fact that the\nmethod is noise-resilient. Under the
standard noise model\, the effect\nof noise on low-point correlation func
tions remains controlled even in\nthe large system limit. I expect this me
thod to primarily help\nunderstand challenging quantum many-body systems\,
but we will also\nmuse on other speculative possibilities (\\emph{e.g.}\,
machine learning) as\nwell.\n\nhttps://indico.fnal.gov/event/17199/contri
butions/42075/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42075/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Universal Features of the Polyakov Loop in Quantum Simulations of
the Abelian Higgs Model
DTSTART;VALUE=DATE-TIME:20180913T142500Z
DTEND;VALUE=DATE-TIME:20180913T145000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42076@indico.fnal.gov
DESCRIPTION:Speakers: Judah Unmuth-Yockey (Syracuse University)\n\nI will
discuss our proposal to quantum simulate the Abelian Higgs\nmodel in $1+1$
dimensions. While doing this I will show how the\nenergy gap associated
with the inclusion of a static charge shows\nuniversal finite-size scaling
in the discrete lattice model\, and the\ncontinuous-time quantum model.
This finite-size scaling is identical\nin both limits. I will briefly go
into progress being made in $2+1$\ndimensions on the $U(1)$-gauge model.\n
\nhttps://indico.fnal.gov/event/17199/contributions/42076/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42076/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Approaching Lattice Gauge Theories with Matrix Product States and
Gaussian States
DTSTART;VALUE=DATE-TIME:20180913T165500Z
DTEND;VALUE=DATE-TIME:20180913T172000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42077@indico.fnal.gov
DESCRIPTION:Speakers: Stefan Kuehn (Perimeter Institute for Theoretical Ph
ysics)\n\nIn recent years variational approaches based on efficient ansatz
es for\nthe wave function of a quantum many-body system have proven their\
npower for addressing the Hamiltonian lattice formulation of gauge\ntheori
es. For one\, methods based on Matrix Product States\, a\nparticular kind
of one-dimensional Tensor Network\, have been\nsuccessfully applied to var
ious Abelian and non-Abelian lattice gauge\nmodels in $1+1$ dimension. Lat
ely\, we developed a variational ansatz\nbased on Gaussian States for $(1+
1)$-dimensional lattice gauge\ntheories. These techniques do not suffer fr
om the sign problem and\nallow for addressing problems which cannot be tac
kled with\nconventional Monte Carlo methods\, such as out-of-equilibrium d
ynamics\nor the presence of a chemical potential.\n\nIn this talk I will p
resent some results demonstrating the\ncapabilities of these techniques us
ing the Schwinger model and a\n$(1+1)$-dimensional SU(2) lattice gauge the
ory as a test bench. In\nparticular\, I will show that we can reliably sim
ulate the static\naspects as well as the real-time dynamics of string brea
king in these\nmodels\, and that these methods might be helpful for explor
ing\nquestions relevant for an implementation in (analog) quantum\nsimulat
ors.\n\nhttps://indico.fnal.gov/event/17199/contributions/42077/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42077/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tensor Networks for Fine-Graining Lattice Gauge Theory\, and Also
Path Integral Geometry
DTSTART;VALUE=DATE-TIME:20180913T163000Z
DTEND;VALUE=DATE-TIME:20180913T165500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42078@indico.fnal.gov
DESCRIPTION:Speakers: Ashley Milsted (Perimeter Institute for Theoretical
Physics)\n\nThere are many tensor network approaches to studying quantum f
ield\ntheories. In this talk we summarize two: (1) An approach to\nfine-gr
aining (UV-completing) lattice Yang-Mills theory in the\nHamiltonian forma
lism. Central to this approach are local maps that\nperform curvature inte
rpolation in the gauge-group\, which together\nform the building blocks of
a gauge-invariant MERA tensor network. (2)\nA way of assigning geometric
content to pieces of certain well-known\ntensor networks for critical syst
ems\, via their mimicry of pieces of\neuclidean time path integral (of a c
onformal field theory).\n\nhttps://indico.fnal.gov/event/17199/contributio
ns/42078/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42078/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cirq Intro
DTSTART;VALUE=DATE-TIME:20180913T202500Z
DTEND;VALUE=DATE-TIME:20180913T212500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42079@indico.fnal.gov
DESCRIPTION:Speakers: Craig Gidney (Google)\n\nhttps://indico.fnal.gov/eve
nt/17199/contributions/42079/
LOCATION:Hornet's Nest (8th Floor) (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42079/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Refresher Tutorial
DTSTART;VALUE=DATE-TIME:20180913T192500Z
DTEND;VALUE=DATE-TIME:20180913T202500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42080@indico.fnal.gov
DESCRIPTION:Speakers: Adam Lyon (Fermilab)\n\nhttps://indico.fnal.gov/even
t/17199/contributions/42080/
LOCATION:Hornet's Nest (8th Floor) (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42080/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Programming and Experiments
DTSTART;VALUE=DATE-TIME:20180913T225500Z
DTEND;VALUE=DATE-TIME:20180914T002500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42081@indico.fnal.gov
DESCRIPTION:https://indico.fnal.gov/event/17199/contributions/42081/
LOCATION:Hornet's Nest (8th Floor) (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42081/
END:VEVENT
BEGIN:VEVENT
SUMMARY:OpenFermion Intro
DTSTART;VALUE=DATE-TIME:20180913T214000Z
DTEND;VALUE=DATE-TIME:20180913T224000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42082@indico.fnal.gov
DESCRIPTION:Speakers: Kevin Sung (Google)\n\nhttps://indico.fnal.gov/event
/17199/contributions/42082/
LOCATION:Hornet's Nest (8th Floor) (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42082/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement in Gauge Theories
DTSTART;VALUE=DATE-TIME:20180914T210000Z
DTEND;VALUE=DATE-TIME:20180914T220000Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42083@indico.fnal.gov
DESCRIPTION:Speakers: Sandip Trivedi (Tata Institute for Fundamental Resea
rch)\n\nhttps://indico.fnal.gov/event/17199/contributions/42083/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42083/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A lower bound method for Hamiltonian simulation based on quantum
marginals and its relation to quantum information
DTSTART;VALUE=DATE-TIME:20180913T184500Z
DTEND;VALUE=DATE-TIME:20180913T192500Z
DTSTAMP;VALUE=DATE-TIME:20220818T171700Z
UID:indico-contribution-42084@indico.fnal.gov
DESCRIPTION:Speakers: Nick Rubin (Rigetti)\n\nIn\n this talk we introduce
a lower bound simulation method based on variational determination of the
quantum marginal distribution\, and how the geometric constraints associat
ed with enforcing feasibility in the variational procedure can be employed
to certify\n physicality in a marginal tomography routine. The feasibilit
y constraints we employ are derived from 'outer' approximations to the n-r
epresentability problem which provide a hierarchy of semidefinite programs
that are relaxations of the ground state energy\n problem. We demonstrat
e that with modern semidefinite program solvers i): the lower bound method
can provide tight approximations to the ground state energies for chemica
l and condensed matter model systems that are challenging for traditional
methods and\n ii) provide a computationally efficient method for fermionic
marginal tomography that will be paramount for finding utility with near-
term quantum resources.\n\nhttps://indico.fnal.gov/event/17199/contributio
ns/42084/
LOCATION:One West (Fermilab - Wilson Hall)
URL:https://indico.fnal.gov/event/17199/contributions/42084/
END:VEVENT
END:VCALENDAR