Probing multipartite entanglement in a coupled Jaynes-Cummings system

Abstract

We show how to probe multipartite entanglement in $N$ coupled Jaynes-Cummings cells where the degrees of freedom are the electronic energies of each of the $N$ atoms in separate single-mode cavities plus the $N$ single-mode fields themselves. Specifically we propose probing the combined system as though it is a dielectric medium. The spectral properties and transition rates directly reveal multipartite entanglement signatures. It is found that the Hilbert space of the $N$ cell system can be confined to the totally symmetric subspace of two states only that are maximally-entangled W states with 2N degrees of freedom.

References in corpus (8)

• Strongly Interacting Polaritons in Coupled Arrays of Cavities
• Quantum phase transitions of light
• Photon blockade induced Mott transitions and XY spin models in coupled cavity arrays
• Climbing the Jaynes-Cummings Ladder and Observing its Sqrt(n) Nonlinearity in a Cavity QED System
• Mott-insulating and glassy phases of polaritons in 1D arrays of coupled cavities
• Dynamics in a coupled-cavity array
• Relaxation- and Decoherence-free subspaces in networks of weakly and strongly coupled resonators
• Two coupled Jaynes-Cummings cells