Entangling two atoms in spatially separated cavities through both photon emission and absorption processes

Abstract

We consider a system consisting of a $\Lambda$-type atom and a V-type atom, which are individually trapped in two spatially separated cavities that are connected by an optical fibre. We show that an extremely entangled state of the two atoms can be deterministically generated through both photon emission of the $\Lambda$-type atom and photon absorption of the V-type atom in an ideal situation. The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity of the entangled state is also investigated. We find that the effect of photon leakage out of the fibre on the fidelity can be greatly diminished in some special cases. As regards the effect of spontaneous emission and photon loss from the cavities, we find that the present scheme with a fidelity higher than 0.98 may be realized under current experiment conditions.

12 pages, 4 figures

References in corpus (16)

• Conditional Quantum Dynamics and Logic Gates
• Deterministic entanglement of two trapped ions
• Ultra-high-Q toroidal microresonators for cavity quantum electrodynamics
• Distributed quantum computation via optical fibres
• A Simple Quantum Computer
• Efficient engineering of multi-atom entanglement through single-photon detections
• Quantum Networking with Optical Fibres
• Controlled entanglement of two field modes in a Cavity Quantum Electrodynamics experiment
• Optimal Sizes of Dielectric Microspheres for Cavity QED with Strong Coupling
• Robust creation of entanglement between ions in spatially separate cavities
• Multiatom and resonant interaction scheme for quantum state transfer and logical gates between two remote cavities via an optical fiber
• Long Distance, Unconditional Teleportation of Atomic States Via Complete Bell State Measurements
• Integration of fiber coupled high-Q silicon nitride microdisks with atom chips
• Quantum entanglement and information processing via excitons in optically-driven quantum dots
• Probabilistic Quantum Gates between Remote Atoms through Interference of Optical Frequency Qubits
• Feasibility of detecting single atoms using photonic bandgap cavities

Cited by in corpus (9)

• Generation of GHZ entangled states of photons in multiple cavities via a superconducting qutrit or an atom through resonant interaction
• Controllable entanglement preparations between atoms in spatially-separated cavities via quantum Zeno dynamics
• Atoms versus photons as carriers of quantum states
• Deterministic generation of multiparticle entanglement in a coupled cavity-fiber system
• Intracavity weak nonlinear phase shifts with single photon driving
• Effect of retardation in the atom-field interaction on entanglement in a double Jaynes-Cummings system
• Controlling Entanglement Dynamics by Choosing Appropriate Ratio between Cavity-Fiber Coupling and Atom-Cavity Coupling
• Distributed phase-covariant cloning with atomic ensembles via quantum Zeno dynamics
• Single-photon frequency conversion and multi-mode entanglement via constructive interference on Sagnac Loop