Two-photon absorption and emission by Rydberg atoms in coupled cavities

Abstract

We study the dynamics of a system composed of two coupled cavities, each containing a single Rydberg atom. The interplay between Rydberg-Rydberg interaction and photon hopping enables the transition of the atoms from the collective ground state to the double Rydberg excitation state by individually interacting with the hybrid cavity modes and suppressing the up conversion process between them. The atomic transition is accompanied by the two-photon absorption and emission of the hybrid modes. Since the energy level structure of the atom-cavity system is photon number dependent, there is only a pair of states being in the two-photon resonance. Therefore, the system can act as a quantum nonlinear absorption filter through the nonclassical quantum process, converting coherent light field into a non-classical state. Meanwhile, the vacuum field in the cavity inspires the Rydberg atoms to simultaneously emit two photons into the hybrid mode, resulting in obvious emission enhancement of the mode.

7 pages, 6 figures

References in corpus (9)

• Strongly Interacting Polaritons in Coupled Arrays of Cavities
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• Dynamics in a coupled-cavity array
• Observation and measurement of "giant" dispersive optical non-linearities in an ensemble of cold Rydberg atoms
• Quantum information processing with single photons and atomic ensembles in microwave coplanar waveguide resonators
• Multi-photon state engineering by heralded interference between single photons and coherent states
• Superradiant Solid in Cavity QED Coupled to a Lattice of Rydberg Gas
• Quantum Process Nonclassicality
• Array of Fabry-Pérot waveguide resonators with tunable coupling

Cited by in corpus (2)

• Supersolid phases of light in extended Jaynes-Cummings-Hubbard systems
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