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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:20210927T014001Z
UID:indico-contribution-17199-42049@indico.fnal.gov
DESCRIPTION:Speakers: Martin Savage (Institute For Nuclear Theory)\nhttps:
//indico.fnal.gov/event/17199/contributions/42049/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42050@indico.fnal.gov
DESCRIPTION:Speakers: John Preskill (Caltech)\nI will review the current s
tatus of quantum computing research\, and\nassess the prospects (both near
-term and long-term) for advancing\nfundamental physics through simulation
s of quantum field theory using\nquantum computers and quantum simulators.
\n\nhttps://indico.fnal.gov/event/17199/contributions/42050/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42052@indico.fnal.gov
DESCRIPTION:Speakers: Kevin Sung (Google)\nhttps://indico.fnal.gov/event/1
7199/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:20210927T014001Z
UID:indico-contribution-17199-42053@indico.fnal.gov
DESCRIPTION:Speakers: Patrick Dreher (NC State University)\nThis is the fi
rst of two talks on the IBM-Q quantum computing systems. The presentation
will briefly summarize the concept of an IBM-Q Hub and the preparations a
t NC State for implementation of the only university-based IBM-Q Hub in th
e Americas. There will be a brief discussion of the role that the Hub wil
l play in forming research partnerships with industry and the preparations
for building a university based educational role for quantum computing.
The talk will also introduce the Hub’s capabilities and how they can pot
entially be focused toward high energy physics problems.\n\nhttps://indico
.fnal.gov/event/17199/contributions/42053/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42054@indico.fnal.gov
DESCRIPTION:Speakers: Antonio Mezzacapo (IBM)\nIn this talk I will review
methods for simulating fermionic systems on quantum computers\, present id
eas on how quantum resources can be optimized\, and how to deal with noise
rates in current quantum processors. I will then demonstrate the capabili
ty of the IBM open-access software Qiskit Aqua\, a full-stack quantum comp
uting framework.\n\nhttps://indico.fnal.gov/event/17199/contributions/4205
4/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42055@indico.fnal.gov
DESCRIPTION:Speakers: Guillaume Verdon (Institute for Quantum Computing)\n
In recent months\, the field of Quantum Machine Learning (QML) has had\nnu
merous advances and a rapid growth of interest from academia and\nindustry
alike. Recent works have focused on a particular class of QML\nalgorithms
\, the so-called quantum variational algorithms (often called\nquantum neu
ral networks)\, where an optimization over a set of\nparametrized quantum
circuit ansatze is performed in order to learn\ncertain quantum states or
quantum transformations. The explicit\nconnection between these quantum pa
rametric circuits and neural\nnetworks from classical deep learning had so
far remained elusive. In\nthis talk\, we will establish how to port over
classical neural\nnetworks as quantum parametric circuits\, and we will fu
rther introduce\na quantum-native backpropagation principle which can be l
everaged to\ntrain any quantum parametric network. We will present two mai
n quantum\noptimizers leveraging this quantum backpropagation principle: Q
uantum\nDynamical Descent (QDD)\, which uses quantum-coherent dynamics to\
noptimize network parameters\, and Momentum Measurement Gradient Descent\n
(MoMGrad)\, which is a quantum-classical analogue of QDD. We will\nbriefly
cover multiple applications of QDD/MoMGrad to various problems\nof quantu
m information learning\, and how to use these optimizers to\ntrain classic
al neural networks in a quantum fashion. Furthermore\, we\nwill show how t
o efficiently train hybrid networks comprised of\nclassical neural network
s and quantum parametric circuits\, running on\nclassical and quantum proc
essing units\, respectively.\n\nTalk based on [\\arXiv{1806.09729}].\n\nht
tps://indico.fnal.gov/event/17199/contributions/42055/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42056@indico.fnal.gov
DESCRIPTION:Speakers: Richard C. Brower (Boston University)\nThe quantum
link approach to lattice field theory\nrepresents scalar\, gauge and Dira
c fields in terms of single bit/qbit fermion\noperators. This representat
ion is universally equivalent\nto conventional lattice methods for asympto
tically free 2D sigma models\nand 4D gauge theories. I will discuss th
e prospect for quantum links\nas a natural basis of quantum computing.\n\n
https://indico.fnal.gov/event/17199/contributions/42056/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42057@indico.fnal.gov
DESCRIPTION:Speakers: Marcela Carena (Fermilab)\nhttps://indico.fnal.gov/e
vent/17199/contributions/42057/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42058@indico.fnal.gov
DESCRIPTION:Speakers: Natalie Klco (University of Washington)\nWith rapid
developments in quantum hardware\, it is increasingly important to analyze
qubit\, operator and gate requirements to optimally utilize available qua
ntum resources for computation. In this talk\, I present such an analysis
for the digitization of interacting scalar field theories onto NISQ-era q
uantum devices\, building upon the foundational work by Jordan\, Lee and P
reskill. Leveraging the Nyquist-Shannon sampling theorem (introduced in t
his context by Macridin\, Spentzouris\, Amundson and Harnik building on th
e work of Somma) as well as the Quantum Fourier Transform for digitization
-improvement\, a feasible number of qubits (\n\nhttps://indico.fnal.gov/ev
ent/17199/contributions/42058/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42059@indico.fnal.gov
DESCRIPTION:Speakers: Stephen Jordan (NIST / University of Maryland)\nIn t
his talk I will describe quantum algorithms by which universal fault-toler
ant quantum computers can simulate quantum and classical field theories. I
n the case of quantum field theories the number of quantum degrees of free
dom is extensive in the volume of the system to be simulated and the speed
up over classical algorithms is exponential. As specific applications we c
onsider phi-fourth theory and the Gross-Neveu model. For classical field t
heories the number of qubits needed for the simulation scales only logarit
hmically with the volume. The resulting speedup is polynomial for classica
l field theories in any fixed number of spatial dimensions but exponential
in the number of dimensions. As a specific application we consider wave e
quations in three spatial dimensions (such as Maxwell's equations and the
Klein-Gordon equation). In this case the quantum algorithm achieves a cubi
c speedup while using only logarithmically many qubits\, vs. standard clas
sical methods which have memory requirements that grow linearly with volum
e. I will conclude with some research directions and open questions regard
ing quantum algorithms for scientific computing.\n\nhttps://indico.fnal.go
v/event/17199/contributions/42059/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42060@indico.fnal.gov
DESCRIPTION:Speakers: Joshua Isaacson ()\nAt the LHC\, theory uncertaintie
s are starting to become the dominant uncertainty for certain processes. O
ne of the limiting factors is the ability to calculate loop diagrams for h
igh number of loops. Here I propose a quantum algorithm that can be used t
o work towards removing this barrier.\n\nhttps://indico.fnal.gov/event/171
99/contributions/42060/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42062@indico.fnal.gov
DESCRIPTION:Speakers: Zhang Jiang (Google\, inc)\nI will briefly introduce
the current hardware at Google and their limitations. I will give example
s on how to construct quantum circuits to simulate model Hamiltonians\, su
ch as the Fermi-Hubbard model and the Sachdev-Ye-Kitaev (SYK) model. Spati
ally local fermionic problems can become nonlocal after being mapped to qu
bit Hamiltonians. I will discuss how lattice gauge field theory can be use
d to construct mappings that conserve locality.\n\nhttps://indico.fnal.gov
/event/17199/contributions/42062/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42063@indico.fnal.gov
DESCRIPTION:Speakers: David B. Kaplan (INT\, University of Washington)\nI
will discuss some motivations for\nstudying gauge theories on a quantum co
mputer\, and basic features of\ngauge theories in a Hamiltonian formulatio
n. In particular\, I will\ndiscuss issues regarding Gauss's law and cutof
fs on the Hilbert space\,\nboth of which have to be confronted for simulat
ions on a quantum\ncomputer.\n\nhttps://indico.fnal.gov/event/17199/contri
butions/42063/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42064@indico.fnal.gov
DESCRIPTION:Speakers: Joseph Lykken (Fermilab)\nhttps://indico.fnal.gov/ev
ent/17199/contributions/42064/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42065@indico.fnal.gov
DESCRIPTION:Speakers: Guido Pagano (University of Maryland)\nLinear arrays
of trapped and laser cooled atomic ions are among the foremost candidates
for realizing quantum simulation and computation platforms. High fidelity
coherent manipulations together with nearly perfect detection guarantee a
n unprecedented control over a large number of qubits\, which can be used
to run quantum algorithms [1] or engineer Hamiltonians to emulate physical
systems of interest [2]. Recently trapped ions have been employed for pro
of of principle demonstrations of quantum simulation of high energy physic
s\, including the Dirac equation [3] and the 1+1D Schwinger model [4]. In
this talk I will describe the main features of the trapped-ion quantum har
dware and discuss proposals [5\,6] and perspectives for an analog implemen
tation of lattice gauge theories in trapped-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. Ha
uke\, et. al.\, PRX 3\, 041018 (2013)\n\n[6] D. Yang\, et al.\, PRA 94\, 0
52321 (2016)\n\nhttps://indico.fnal.gov/event/17199/contributions/42065/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42066@indico.fnal.gov
DESCRIPTION:Speakers: Jesse Stryker (University of Washington)\nMotivated
by the limited capabilities of near-term quantum computers\,\nwe reconside
r the Hamiltonian formulation of lattice gauge theories\nand the method of
truncating Hilbert space to render it\nfinite-dimensional. Conventional f
ormulations lead to a Hilbert space\nlargely spanned by unphysical states\
; given the current inability to\nperform fault-tolerant large scale quant
um computations\, we examine\nhere how one might restrict wave function ev
olution entirely or mostly\nto the physical subspace. We consider such con
structions for the\nsimplest of these theories containing dynamical gauge
bosons — $U(1)$\nlattice gauge theory without matter in d = 2\, 3 spatia
l dimensions —\nand find that electric-magnetic duality naturally plays
an important\nrole. We conclude that this approach is likely to significan
tly reduce\ncomputational overhead in d = 2 by a reduction of variables. W
e\nfurther investigate potential advantages of regulating magnetic\nfluctu
ations in asymptotically-free theories\, instead of electric\nfluctuations
\, which have been the focus of previous truncation\nproposals.\n\nhttps:/
/indico.fnal.gov/event/17199/contributions/42066/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42067@indico.fnal.gov
DESCRIPTION:Speakers: Joe Carlson (LANL)\nDynamics in quantum systems is n
otoriously difficult to treat. We demonstrate\nan exponential speed-up for
quantum linear response as measured in electron and neutrino\nscattering.
I will discuss some very preliminary work we have done and prospects fo
r\nfurther studies using both classical computers to simulate quantum comp
uters and\nquantum computer applications.\n\nhttps://indico.fnal.gov/event
/17199/contributions/42067/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42068@indico.fnal.gov
DESCRIPTION:Speakers: Maria Spiropulu ()\, Neil Sinclair (Caltech)\nThe Fe
rmilab Quantum NETwork ([FQNET][1]) aims to produce a fully functional qua
ntum network based initially on optical fibers with the capability to dist
ribute time-bin photonic quantum states (qubits) across various distances
by employing an intrinsic property of a multi-qubit system: entanglement.
The resulting quantum network system will serve fundamental reserach and
future R&D quantum communication technologies and protocols. Here we prese
nt the status of the system.\n\n\n [1]: http://inqnet.caltech.edu/fqnet/\
n\nhttps://indico.fnal.gov/event/17199/contributions/42068/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42069@indico.fnal.gov
DESCRIPTION:Speakers: Ning Bao (Berkeley)\nIn this talk I will explore the
possibilities of using quantum\nalgorithms and techniques inspired by qua
ntum algorithms to design\nsearches for new physics. This talk will be pri
marily and\nspeculatively focused on particle physics\, rather than quantu
m\ngravity\, in an attempt to find new potential connections between high\
nenergy physics and quantum information science.\n\nhttps://indico.fnal.go
v/event/17199/contributions/42069/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42070@indico.fnal.gov
DESCRIPTION:Speakers: Daniel Harlow (MIT)\nhttps://indico.fnal.gov/event/1
7199/contributions/42070/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42071@indico.fnal.gov
DESCRIPTION:Speakers: John Preskill (Caltech)\nView [video][1]\n\n\n [1]:
http://vms.fnal.gov/asset/detail?recid=1956899\n\nhttps://indico.fnal.gov
/event/17199/contributions/42071/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42073@indico.fnal.gov
DESCRIPTION:Speakers: Erez Zohar (Max Planck Institute of Quantum Optics)\
nQuantum simulation and tensor networks are two many-body physics\napproac
hes rooted in quantum information science\, which have been\nwidely used r
ecently\, especially in condensed matter contexts\, proving\nto be very us
eful. The first suggests to use controllable quantum\nsystems as simulator
s of others\, which might be otherwise inaccessible\nor hard to solve\; th
e latter allows one to efficiently construct and\nstudy (analytically and
numerically) physically relevant many body\nstates with arbitrary symmetri
es. More recently\, these methods have\nbeen generalized and applied to hi
gh energy physics problems as well\,\nand in particular to gauge theories.
In my talk I will discuss the\napplication of those methods for the stud
y of lattice gauge theories\,\nfocusing on the work carried out at the the
ory group at MPQ: first\,\nquantum simulation of lattice gauge theories wi
th ultracold atoms in\noptical lattices -- suggesting to observe non-pertu
rbative elementary\nparticle physics in atomic simulators\; and finally\,
gauged fermionic\nPEPS -- a particular tensor network construction of gaug
e invariant\nstates\, involving dynamical gauge fields and fermionic matte
r\,\nallowing one to use the efficient tensor network toolbox for the stud
y\nof gauge theories\, and extend it\, thanks to the presence of gauge\nfi
elds\, to numerical studies in $(2+1)$-d and more.\n\nhttps://indico.fnal.
gov/event/17199/contributions/42073/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42074@indico.fnal.gov
DESCRIPTION:Speakers: Nicholas LaRacuente (University of Illinois at Urban
a-Champaign)\nIn an interacting quantum system far from equilibrium\, init
ially local\ninformation spreads into and melds with its environment. This
has many\nmanifestations\, from entanglement spread in quantum quenches t
o\nenvironmental coupling induced by quantum channels. The rate of\nentrop
y spread is often difficult to calculate outside of free\,\nperturbative o
r holographic regimes. We propose an operator algebra\napproach to the pro
blem. The close connection between Rényi entropies\nand non-commutative m
easures has yielded strong results in the channel\nsetting. We apply simil
ar ideas to the setting of many-body quantum\nquenches\, including in the
SYK model. We discuss connections to chaos\nand rates of scrambling. For p
ractical applications\, we consider how\nour methods apply to decoherence
in quantum computation and memory.\n\nhttps://indico.fnal.gov/event/17199/
contributions/42074/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42075@indico.fnal.gov
DESCRIPTION:Speakers: Isaac Kim (Stanford University)\nI will argue that e
ven a medium-scale (50 to \\ensuremath{\\sim}100 qubits) quantum computer\
ncan significantly speed up the existing tensor network\ncalculations. Thi
s is because the classical tensor network contraction\nalgorithms have hit
a plateau\, and because the contraction time on a\nquantum computer scale
s much favorably compared to the classical\nmethods. What makes this propo
sal realistic is the fact that the\nmethod is noise-resilient. Under the s
tandard noise model\, the effect\nof noise on low-point correlation functi
ons remains controlled even in\nthe large system limit. I expect this meth
od to primarily help\nunderstand challenging quantum many-body systems\, b
ut we will also\nmuse on other speculative possibilities (\\emph{e.g.}\, m
achine learning) as\nwell.\n\nhttps://indico.fnal.gov/event/17199/contribu
tions/42075/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42076@indico.fnal.gov
DESCRIPTION:Speakers: Judah Unmuth-Yockey (Syracuse University)\nI will di
scuss our proposal to quantum simulate the Abelian Higgs\nmodel in $1+1$ d
imensions. While doing this I will show how the\nenergy gap associated wi
th the inclusion of a static charge shows\nuniversal finite-size scaling i
n the discrete lattice model\, and the\ncontinuous-time quantum model. Th
is finite-size scaling is identical\nin both limits. I will briefly go in
to progress being made in $2+1$\ndimensions on the $U(1)$-gauge model.\n\n
https://indico.fnal.gov/event/17199/contributions/42076/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42077@indico.fnal.gov
DESCRIPTION:Speakers: Stefan Kuehn (Perimeter Institute for Theoretical Ph
ysics)\nIn recent years variational approaches based on efficient ansatzes
for\nthe wave function of a quantum many-body system have proven their\np
ower for addressing the Hamiltonian lattice formulation of gauge\ntheories
. For one\, methods based on Matrix Product States\, a\nparticular kind of
one-dimensional Tensor Network\, have been\nsuccessfully applied to vario
us Abelian and non-Abelian lattice gauge\nmodels in $1+1$ dimension. Latel
y\, we developed a variational ansatz\nbased on Gaussian States for $(1+1)
$-dimensional lattice gauge\ntheories. These techniques do not suffer from
the sign problem and\nallow for addressing problems which cannot be tackl
ed with\nconventional Monte Carlo methods\, such as out-of-equilibrium dyn
amics\nor the presence of a chemical potential.\n\nIn this talk I will pre
sent some results demonstrating the\ncapabilities of these techniques usin
g the Schwinger model and a\n$(1+1)$-dimensional SU(2) lattice gauge theor
y as a test bench. In\nparticular\, I will show that we can reliably simul
ate the static\naspects as well as the real-time dynamics of string breaki
ng in these\nmodels\, and that these methods might be helpful for explorin
g\nquestions relevant for an implementation in (analog) quantum\nsimulator
s.\n\nhttps://indico.fnal.gov/event/17199/contributions/42077/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42078@indico.fnal.gov
DESCRIPTION:Speakers: Ashley Milsted (Perimeter Institute for Theoretical
Physics)\nThere are many tensor network approaches to studying quantum fie
ld\ntheories. In this talk we summarize two: (1) An approach to\nfine-grai
ning (UV-completing) lattice Yang-Mills theory in the\nHamiltonian formali
sm. Central to this approach are local maps that\nperform curvature interp
olation in the gauge-group\, which together\nform the building blocks of a
gauge-invariant MERA tensor network. (2)\nA way of assigning geometric co
ntent to pieces of certain well-known\ntensor networks for critical system
s\, via their mimicry of pieces of\neuclidean time path integral (of a con
formal field theory).\n\nhttps://indico.fnal.gov/event/17199/contributions
/42078/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42079@indico.fnal.gov
DESCRIPTION:Speakers: Craig Gidney (Google)\nhttps://indico.fnal.gov/event
/17199/contributions/42079/
LOCATION:Fermilab - Wilson Hall Hornet's Nest (8th Floor)
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:20210927T014001Z
UID:indico-contribution-17199-42080@indico.fnal.gov
DESCRIPTION:Speakers: Adam Lyon (Fermilab)\nhttps://indico.fnal.gov/event/
17199/contributions/42080/
LOCATION:Fermilab - Wilson Hall Hornet's Nest (8th Floor)
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:20210927T014001Z
UID:indico-contribution-17199-42081@indico.fnal.gov
DESCRIPTION:https://indico.fnal.gov/event/17199/contributions/42081/
LOCATION:Fermilab - Wilson Hall Hornet's Nest (8th Floor)
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:20210927T014001Z
UID:indico-contribution-17199-42082@indico.fnal.gov
DESCRIPTION:Speakers: Kevin Sung (Google)\nhttps://indico.fnal.gov/event/1
7199/contributions/42082/
LOCATION:Fermilab - Wilson Hall Hornet's Nest (8th Floor)
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:20210927T014001Z
UID:indico-contribution-17199-42083@indico.fnal.gov
DESCRIPTION:Speakers: Sandip Trivedi (Tata Institute for Fundamental Resea
rch)\nhttps://indico.fnal.gov/event/17199/contributions/42083/
LOCATION:Fermilab - Wilson Hall One West
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:20210927T014001Z
UID:indico-contribution-17199-42084@indico.fnal.gov
DESCRIPTION:Speakers: Nick Rubin (Rigetti)\nIn\n this talk we introduce a
lower bound simulation method based on variational determination of the qu
antum marginal distribution\, and how the geometric constraints associated
with enforcing feasibility in the variational procedure can be employed t
o certify\n physicality in a marginal tomography routine. The feasibility
constraints we employ are derived from 'outer' approximations to the n-rep
resentability problem which provide a hierarchy of semidefinite programs t
hat are relaxations of the ground state energy\n problem. We demonstrate
that with modern semidefinite program solvers i): the lower bound method c
an provide tight approximations to the ground state energies for chemical
and condensed matter model systems that are challenging for traditional me
thods and\n ii) provide a computationally efficient method for fermionic m
arginal tomography that will be paramount for finding utility with near-te
rm quantum resources.\n\nhttps://indico.fnal.gov/event/17199/contributions
/42084/
LOCATION:Fermilab - Wilson Hall One West
URL:https://indico.fnal.gov/event/17199/contributions/42084/
END:VEVENT
END:VCALENDAR