Coherent generation of EPR-entangled light pulses mediated by a single trapped atom

Abstract

We show that a single, trapped, laser-driven atom in a high-finesse optical cavity allows for the quantum-coherent generation of entangled light pulses on demand. Schemes for generating simultaneous and temporally separated pulse pairs are proposed. The mechanical effect of the laser excitation on the quantum motion of the cold trapped atom mediates the entangling interaction between two cavity modes and between the two subsequent pulses, respectively. The entanglement is of EPR-type, and its degree can be controlled through external parameters. At the end of the generation process the atom is decorrelated from the light field. Possible experimental implementations of the proposals are discussed.

11 pages, 4 figures

References in corpus (3)

• Experimental demonstration of quantum memory for light
• Quantum Beat of Two Single Photons
• Forces between a single atom and its distant mirror image

Cited by in corpus (11)

• Robust entanglement of a micromechanical resonator with output optical fields
• Two-mode single-atom laser as a source of entangled light
• Single-atom as a macroscopic entanglement source
• A single cold atom as efficient stationary source of EPR-entangled light
• Non-linear optics with two trapped atoms
• Quantum light by atomic arrays in optical resonators
• Time-separated entangled light pulses from a single-atom emitter
• Output entanglement and squeezing of two-mode fields generated by a single atom
• Continuous-variables entanglement purification with atomic systems
• Dissipative quantum light field engineering
• Entangled light from Bose-Einstein condensates