Preparation of multiparty entangled states using pairwise perfectly efficient single-probe photon four-wave mixing

Journal Article · Tue Jun 01 00:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.063803· OSTI ID:20643812

Ying, Wu ^[1]; Payne, M G; Hagley, E W; Deng, L ^[2]

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1. State Key Laboratory of Laser Technique and Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China)
2. Electron and Optical Physics Division, NIST, Gaithersburg, Maryland 20899 (United States)

We propose a scheme to achieve multiparty entanglement with perfectly efficient, ultraslow, multichannel pairwise four-wave mixing (FWM). A cold atomic medium is illuminated with an N-mode continuous-wave (cw) control laser to produce coherent mixtures of excited states. An ultraslowly propagating, single-photon quantum probe field completes multichannel, pairwise FWM, creating a depth dependent entanglement of N Fock states. We show explicitly that this scheme can be utilized to realize an N-party entangled state of ultraslowly propagating quantized fields. In particular, we give the explicit analytical expression of a three-party W-state propagating at an ultraslow group velocity, and the numerical results of a multiparty W state of 2M+1 Fock states.

• OSTI ID: 20643812
• Journal Information: Physical Review. A, Vol. 69, Issue 6; Other Information: DOI: 10.1103/PhysRevA.69.063803; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CONTROL
COOLING
EXCITED STATES
FREQUENCY MIXING
LASER RADIATION
MIXING
MIXTURES
OPTICS
PHOTONS
RADIATION PRESSURE
VELOCITY