A Caltech Library Service

Dynamic Stimulation of Quantum Coherence in Systems of Lattice Bosons

Robertson, Andrew and Galitski, Victor M. and Refael, Gil (2011) Dynamic Stimulation of Quantum Coherence in Systems of Lattice Bosons. Physical Review Letters, 106 (16). Art. No. 165701. ISSN 0031-9007. doi:10.1103/PhysRevLett.106.165701.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Thermal fluctuations tend to destroy long-range phase correlations. Consequently, bosons in a lattice will undergo a transition from a phase-coherent superfluid as the temperature rises. Contrary to common intuition, however, we show that nonequilibrium driving can be used to reverse this thermal decoherence. This is possible because the energy distribution at equilibrium is rarely optimal for the manifestation of a given quantum property. We demonstrate this in the Bose-Hubbard model by calculating the nonequilibrium spatial correlation function with periodic driving. We show that the nonequilibrium phase boundary between coherent and incoherent states at finite bath temperatures can be made qualitatively identical to the familiar zero-temperature phase diagram, and we discuss the experimental manifestation of this phenomenon in cold atoms.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:© 2011 American Physical Society. Received 29 November 2010; revised 10 February 2011; published 20 April 2011. The authors are grateful to Ehud Altman, William Phillips, and Hong Ling for illuminating discussions of this topic. This research was supported by JQI-PFC (A. R.), DARPA and U.S.-ARO (V. G.), and the Packard Foundation, Sloan Foundation, and NSF Grants No. PHY- 0456720 and No. PHY-0803371 (G. R.).
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Packard FoundationUNSPECIFIED
Sloan FoundationUNSPECIFIED
NSFPHY- 0456720
Issue or Number:16
Classification Code:PACS: 67.85.-d, 03.75.Kk, 03.75.Lm, 64.60.Ht
Record Number:CaltechAUTHORS:20110523-102744616
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23764
Deposited On:24 May 2011 14:45
Last Modified:09 Nov 2021 16:17

Repository Staff Only: item control page