Engineering steady-state entanglement via dissipation and quantum Zeno dynamics in optical cavity

Abstract

A new mechanism is proposed for dissipatively preparing maximal Bell entangled state of two atoms in an optical cavity. This scheme integrates the spontaneous emission, the light shift of atoms in the presence of dispersive microwave field, and the quantum Zeno dynamics induced by continuous coupling, to obtain a unique steady state irrespective of initial state. Even for a large cavity decay, a high-fidelity entangled state is achievable at a short convergence time, since the occupation of cavity mode is inhibited by the Zeno requirement. Therefore, a low single-atom cooperativity $C=g^2/(\kappa \gamma )$ is good enough for realizing a high fidelity of entanglement in a wide range of decoherence parameters. As a straightforward extension, the feasibility for preparation of two-atom Knill-Laflamme-Milburn state with the same mechanism is also discussed.

References in corpus (7)

• Experimental quantum teleportation
• Experimental ten-photon entanglement
• Dissipative preparation of entanglement in optical cavities
• Freezing a Coherent Field Growth in a Cavity by Quantum Zeno Effect
• Quantum dynamics of an electromagnetic mode that cannot contain N photons
• Dissipation-based entanglement via quantum Zeno dynamics and Rydberg antiblockade
• Preparation of entangled states through Hilbert space engineering

Cited by in corpus (8)

• Engineered dissipation induced entanglement transition in quantum spin chains: from logarithmic growth to area law
• A review on quantum information processing in cavities
• Dissipation induced $W$ state in a Rydberg-atom-cavity system
• Resonant-interaction-induced Rydberg antiblockade
• Engineering steady entanglement for trapped ions at finite temperature by dissipation
• Noise-induced distributed entanglement in atom-cavity-fiber system
• Generation and stabilization of Bell states via repeated projective measurements on a driven ancilla qubit
• Generation of polarization entanglement via the quantum Zeno effect