Journal
PHYSICAL REVIEW A
Volume 87, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.063421
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Funding
- National Basic Research Program of China (973 Program) [2011CB921604]
- National Natural Science Foundation of China [11104076, 11004057, 11234003]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110076120004]
- Shanghai Municipal Education Commission [10CG24]
- Shanghai Rising-Star Program [12A1401000]
- Fundamental Research Funds for the Central Universities
- Shanghai Education Development Foundation [10CG24]
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We present a theoretical study on the system of laser-driven strongly interacting Rydberg atoms trapped in a two-dimensional triangular lattice, in which the dipole-dipole interactions between Rydberg states result in exotic quantum phases. By using the mean-field theory, we investigate the steady state solutions and analyze their dynamical stabilities. We find that in the strong-interaction limit, the dynamics of the system is chaotic and exhibits random oscillations under appropriate laser detunings. The Lyapunov exponent criterion is introduced to confirm the existence of this chaotic behavior. In addition, we present a full quantum calculation based on a six-atom model, and find that the system exhibits some biantiferromagnetic properties in every triangular cell when the one-photon detuning is exactly resonant or blue shifted.
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