Research output: Contribution to journal › Article › peer-review
Quantum simulators based on the global collective light-matter interaction. / Caballero-Benitez, Santiago F.; Mazzucchi, Gabriel; Mekhov, Igor B.
In: Physical Review A, Vol. 93, No. 6, 063632, 28.06.2016.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Quantum simulators based on the global collective light-matter interaction
AU - Caballero-Benitez, Santiago F.
AU - Mazzucchi, Gabriel
AU - Mekhov, Igor B.
N1 - Publisher Copyright: © 2016 American Physical Society. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/6/28
Y1 - 2016/6/28
N2 - We show that coupling ultracold atoms in optical lattices to quantized modes of an optical cavity leads to quantum phases of matter, which at the same time possess properties of systems with both short- and long-range interactions. This opens perspectives for novel quantum simulators of finite-range interacting systems, even though the light-induced interaction is global (i.e., infinitely long range). This is achieved by spatial structuring of the global light-matter coupling at a microscopic scale. Such simulators can directly benefit from the collective enhancement of the global light-matter interaction and constitute an alternative to standard approaches using Rydberg atoms or polar molecules. The system in the steady state of light induces effective many-body interactions that change the landscape of the phase diagram of the typical Bose-Hubbard model. Therefore, the system can support nontrivial superfluid states, bosonic dimer, trimer, etc., states, and supersolid phases depending on the choice of the wavelength and pattern of the light with respect to the classical optical lattice potential. We find that by carefully choosing the system parameters one can investigate diverse strongly correlated physics with the same setup, i.e., modifying the geometry of light beams. In particular, we present the interplay between the density and bond (or matter-wave coherence) interactions. We show how to tune the effective interaction length in such a hybrid system with both short-range and global interactions.
AB - We show that coupling ultracold atoms in optical lattices to quantized modes of an optical cavity leads to quantum phases of matter, which at the same time possess properties of systems with both short- and long-range interactions. This opens perspectives for novel quantum simulators of finite-range interacting systems, even though the light-induced interaction is global (i.e., infinitely long range). This is achieved by spatial structuring of the global light-matter coupling at a microscopic scale. Such simulators can directly benefit from the collective enhancement of the global light-matter interaction and constitute an alternative to standard approaches using Rydberg atoms or polar molecules. The system in the steady state of light induces effective many-body interactions that change the landscape of the phase diagram of the typical Bose-Hubbard model. Therefore, the system can support nontrivial superfluid states, bosonic dimer, trimer, etc., states, and supersolid phases depending on the choice of the wavelength and pattern of the light with respect to the classical optical lattice potential. We find that by carefully choosing the system parameters one can investigate diverse strongly correlated physics with the same setup, i.e., modifying the geometry of light beams. In particular, we present the interplay between the density and bond (or matter-wave coherence) interactions. We show how to tune the effective interaction length in such a hybrid system with both short-range and global interactions.
UR - http://www.scopus.com/inward/record.url?scp=84977277093&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.93.063632
DO - 10.1103/PhysRevA.93.063632
M3 - Article
AN - SCOPUS:84977277093
VL - 93
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 6
M1 - 063632
ER -
ID: 69878277