Quantum Virtual Cooling
Abstract
We propose a quantum-information-based scheme to reduce the temperature of quantum many-body systems and access regimes beyond the current capability of conventional cooling techniques. We show that collective measurements on multiple copies of a system at finite temperature can simulate measurements of the same system at a lower temperature. This idea is illustrated for the example of ultracold atoms in optical lattices, where controlled tunnel coupling and quantum gas microscopy can be naturally combined to realize the required collective measurements to access a lower, virtual temperature. Our protocol is experimentally implemented for a Bose-Hubbard model on up to 12 sites, and we successfully extract expectation values of observables at half the temperature of the physical system. Additionally, we present related techniques that enable the extraction of zero-temperature states directly.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); Fannie and John Hertz Foundation; Miller Institute for Basic Research in Science; National Science Foundation (NSF); Gordon and Betty Moore Foundation; US Air Force Office of Scientific Research (AFOSR); European Research Council (ERC); Daimler and Benz Foundation; CIFAR; Simons Foundation
- OSTI Identifier:
- 1545460
- Alternate Identifier(s):
- OSTI ID: 1613203
- Grant/Contract Number:
- SC0019380; PHY-1720397; 725636
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. X
- Additional Journal Information:
- Journal Name: Physical Review. X Journal Volume: 9 Journal Issue: 3; Journal ID: ISSN 2160-3308
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; Physics; Atomic and Molecular Physics; Quantum Information; Statistical Physics
Citation Formats
Cotler, Jordan, Choi, Soonwon, Lukin, Alexander, Gharibyan, Hrant, Grover, Tarun, Tai, M. Eric, Rispoli, Matthew, Schittko, Robert, Preiss, Philipp M., Kaufman, Adam M., Greiner, Markus, Pichler, Hannes, and Hayden, Patrick. Quantum Virtual Cooling. United States: N. p., 2019.
Web. doi:10.1103/PhysRevX.9.031013.
Cotler, Jordan, Choi, Soonwon, Lukin, Alexander, Gharibyan, Hrant, Grover, Tarun, Tai, M. Eric, Rispoli, Matthew, Schittko, Robert, Preiss, Philipp M., Kaufman, Adam M., Greiner, Markus, Pichler, Hannes, & Hayden, Patrick. Quantum Virtual Cooling. United States. https://doi.org/10.1103/PhysRevX.9.031013
Cotler, Jordan, Choi, Soonwon, Lukin, Alexander, Gharibyan, Hrant, Grover, Tarun, Tai, M. Eric, Rispoli, Matthew, Schittko, Robert, Preiss, Philipp M., Kaufman, Adam M., Greiner, Markus, Pichler, Hannes, and Hayden, Patrick. Mon .
"Quantum Virtual Cooling". United States. https://doi.org/10.1103/PhysRevX.9.031013.
@article{osti_1545460,
title = {Quantum Virtual Cooling},
author = {Cotler, Jordan and Choi, Soonwon and Lukin, Alexander and Gharibyan, Hrant and Grover, Tarun and Tai, M. Eric and Rispoli, Matthew and Schittko, Robert and Preiss, Philipp M. and Kaufman, Adam M. and Greiner, Markus and Pichler, Hannes and Hayden, Patrick},
abstractNote = {We propose a quantum-information-based scheme to reduce the temperature of quantum many-body systems and access regimes beyond the current capability of conventional cooling techniques. We show that collective measurements on multiple copies of a system at finite temperature can simulate measurements of the same system at a lower temperature. This idea is illustrated for the example of ultracold atoms in optical lattices, where controlled tunnel coupling and quantum gas microscopy can be naturally combined to realize the required collective measurements to access a lower, virtual temperature. Our protocol is experimentally implemented for a Bose-Hubbard model on up to 12 sites, and we successfully extract expectation values of observables at half the temperature of the physical system. Additionally, we present related techniques that enable the extraction of zero-temperature states directly.},
doi = {10.1103/PhysRevX.9.031013},
journal = {Physical Review. X},
number = 3,
volume = 9,
place = {United States},
year = {Mon Jul 29 00:00:00 EDT 2019},
month = {Mon Jul 29 00:00:00 EDT 2019}
}
https://doi.org/10.1103/PhysRevX.9.031013
Web of Science
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