Quantum simulators based on the global collective light-matter interaction

Santiago F. Caballero-Benitez, Gabriel Mazzucchi, Igor B. Mekhov

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

22 Цитирования (Scopus)

Аннотация

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.

Язык оригиналаанглийский
Номер статьи063632
ЖурналPhysical Review A
Том93
Номер выпуска6
DOI
СостояниеОпубликовано - 28 июн 2016

Предметные области Scopus

  • Атомная и молекулярная физика и оптика

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