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

Journal Article · Wed Mar 15 04:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20787002

Morigi, Giovanna; Eschner, Juergen; Mancini, Stefano; Vitali, David ^[1]

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1. Grup d'Optica, Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra (Spain)

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. We report the detailed description of schemes for generating simultaneous and temporally separated pulse pairs, presented in [G. Morigi et al., Phys. Rev. Lett., 96, 023601 (2006)]. 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.

• OSTI ID: 20787002
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CAVITY RESONATORS
ENERGY LEVELS
EXCITATION
LASER RADIATION
OPTICS
PHOTON-ATOM COLLISIONS
PULSES
QUANTUM ENTANGLEMENT
RADIATION PRESSURE
TRAPPING
VISIBLE RADIATION