Observation of disorder-free localization using a (2+1)D lattice gauge theory on a quantum processor
Abstract
Disorder-induced phenomena in quantum many-body systems pose a challenge for analytical and numerical approaches at relevant time and system scales. To reduce the cost of disorder sampling, we investigated quantum circuits initialized in states that form tunable superpositions over all disorder configurations, which in lattice gauge theories can be interpreted as superpositions over gauge sectors. On the experimentally accessible timescales, we observed localization in the absence of disorder in one and two dimensions: Perturbations failed to diffuse despite fully disorder-free evolution and initial states. However, entropy measurements revealed that superposition-prepared states fundamentally differ from those obtained by direct disorder sampling. Leveraging superposition, we propose an algorithm with a polynomial speedup in sampling disorder configurations, a long-standing challenge in many-body localization studies.
Article Details
Journal Info
Science
American Association for the Advancement of Science
Authors (221)
G. Gyawali
S. Kumar
Y. D. Lensky
E. Rosenberg
A. Szasz
T. Cochran
Google Research, Mountain View, CA, USA.
R. Chen
Google Research, Mountain View, CA, USA.
A. H. Karamlou
N. Yosri
S. Meeks
K. Kechedzhi
J. Berndtsson
T. Westerhout
A. Asfaw
D. Abanin
R. Acharya
L. Aghababaie Beni
T. I. Andersen
M. Ansmann
F. Arute
K. Arya
N. Astrakhantsev
J. Atalaya
R. Babbush
B. Ballard
J. Bardin
Google Research, Mountain View, CA, USA.
A. Bengtsson
A. Bilmes
G. Bortoli
A. Bourassa
J. Bovaird
L. Brill
M. Broughton
D. Browne
Google Research, Mountain View, CA, USA.
B. Buchea
B. Buckley
Google Research, Mountain View, CA, USA.
D. Buell
Google Research, Mountain View, CA, USA.
T. Burger
B. Burkett
N. Bushnell
A. Cabrera
J. Campero
H.-S. Chang
Z. Chen
B. Chiaro
J. Claes
A. Cleland
Google Research, Mountain View, CA, USA.
J. Cogan
R. Collins
P. Conner
W. Courtney
A. L. Crook
S. Das
D. M. Debroy
A. Del Toro Barba
S. Demura
L. De Lorenzo
A. Di Paolo
P. Donohoe
I. Drozdov
A. Dunsworth
C. Earle
A. Eickbusch
A. Elbag
Google Research, Mountain View, CA, USA.
M. Elzouka
C. Erickson
L. Faoro
R. Fatemi
V. Ferreira
Google Research, Mountain View, CA, USA.
L. Flores Burgos
E. Forati
A. Fowler
Google Research, Mountain View, CA, USA.
B. Foxen
S. Ganjam
R. Gasca
W. Giang
C. Gidney
D. Gilboa
R. Gosula
A. Grajales Dau
D. Graumann
A. Greene
J. Gross
Google Research, Mountain View, CA, USA.
S. Habegger
M. Hamilton
Google Research, Mountain View, CA, USA.
M. Hansen
M. Harrigan
Google Research, Mountain View, CA, USA.
S. Harrington
Google Research, Mountain View, CA, USA.
S. Heslin
P. Heu
G. Hill
J. Hilton
M. Hoffmann
Google Research, Mountain View, CA, USA.
H.-Y. Huang
A. Huff
W. J. Huggins
L. B. Ioffe
S. V. Isakov
E. Jeffrey
Z. Jiang
C. Jones
S. Jordan
C. Joshi
P. Juhas
D. Kafri
H. Kang
T. Khaire
T. Khattar
M. Khezri
M. Kieferová
S. Kim
P. Klimov
A. Klots
Google Research, Mountain View, CA, USA.
B. Kobrin
A. Korotkov
F. Kostritsa
J. Kreikebaum
V. Kurilovich
D. Landhuis
B. Langley
P. Laptev
K.-M. Lau
J. Ledford
J. Lee
K. Lee
B. Lester
L. Le Guevel
W. Li
A. Lill
Google Research, Mountain View, CA, USA.
W. Liu
W. Livingston
A. Locharla
D. Lundahl
A. Lunt
S. Madhuk
A. Maloney
S. Mandrà
L. Martin
S. Martin
O. Martin
C. Maxfield
J. McClean
M. McEwen
A. Megrant
X. Mi
K. Miao
A. Mieszala
R. Molavi
S. Molina
S. Montazeri
A. Morvan
R. Movassagh
C. Neill
A. Nersisyan
M. Newman
A. Nguyen
M. Nguyen
C.-H. Ni
K. Ottosson
A. Pizzuto
R. Potter
O. Pritchard
L. Pryadko
Google Research, Mountain View, CA, USA.
C. Quintana
G. Ramachandran
M. Reagor
D. Rhodes
G. Roberts
C. Rocque
N. Rubin
Google Research, Mountain View, CA, USA.
N. Saei
K. Sankaragomathi
K. Satzinger
H. Schurkus
C. Schuster
M. Shearn
A. Shorter
N. Shutty
V. Shvarts
V. Sivak
J. Skruzny
S. Small
W. Clarke Smith
S. Springer
G. Sterling
J. Suchard
M. Szalay
A. Sztein
D. Thor
M. Mert Torunbalci
A. Vaishnav
S. Vdovichev
G. Vidal
C. Vollgraff Heidweiller
S. Waltman
S. X. Wang
T. White
K. Wong
B. W. K. Woo
C. Xing
Z. Jamie Yao
P. Yeh
B. Ying
J. Yoo
G. Young
A. Zalcman
Y. Zhang
N. Zhu
N. Zobrist
S. Boixo
J. Kelly
E. Lucero
Y. Chen
V. Smelyanskiy
H. Neven
D. Kovrizhin
Laboratory of Theoretical Physics and Modelling, CY Cergy Paris Universite, UMR CNRS 8089, Pontoise Cergy-Pontoise Cedex, France.
J. Knolle
J. C. Halimeh
Munich Center for Quantum Science and Technology (MCQST), Munich, Germany.
I. Aleiner
Google Research, Mountain View, CA, USA.
R. Moessner
Max Planck Institute for the Physics of Complex Systems, Dresden, Germany.
P. Roushan