Dissipative preparation of tripartite singlet state in coupled arrays of cavities via quantum feedback control

Abstract

We propose an experimentally feasible scheme for dissipative preparation of tripartite entangled state with atoms separately trapped in an array of three coupled cavities. The combination of coherent driving fields and quantum-jump-based feedback control will drive the system into a non-equilibrium steady state, which has a nearly perfect overlap with the genuine three-atom singlet state. Different control strategies are investigated and the corresponding optimal parameters are confirmed. Moreover, the fidelity of target state is insensitive to detection inefficiencies, and it oversteps 90\% for a wide range of decoherence parameters as long as the single-atom cooperativity parameter $C\equiv g^2/(\gamma \kappa )>350$.

7 pages, 5 figures, comments are welcome

References in corpus (7)

• Photon blockade induced Mott transitions and XY spin models in coupled cavity arrays
• Dissipative preparation of entanglement in optical cavities
• Fractional Quantum Hall State in Coupled Cavities
• Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State
• Stabilising entanglement by quantum jump-based feedback
• Controlling entanglement by direct quantum feedback
• Detection-Enhanced Steady State Entanglement with Ions

Cited by in corpus (4)

• Dissipative stabilization of quantum-feedback-based multipartite entanglement with Rydberg atoms
• Conversion of entangled states with nitrogen-vacancy centers coupled to microtoroidal resonators
• Universal freezing of asymmetry
• Rapid Preparation of Rydberg Superatom W State Using Superadiabatic Techniques