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Title: Simple scheme for generating an n-qubit W state in cavity QED

Abstract

A simple scheme is proposed to generate an n-qubit W state in cavity QED. Conditioned on no photon leakage from the cavity, the n-qubit W state can be generated by resonant interaction between atoms and the cavity if the cavity is initially prepared in the single-photon state and all the atoms are in the ground states. We check the time evolution of the system involving decay, and show that, since the required interaction time is very short, with present cavity QED techniques, the success probability of our scheme is almost unity.

Authors:
 [1];  [2]; ;  [1]
  1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China and Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071 (China)
  2. (China)
Publication Date:
OSTI Identifier:
20786800
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.73.014302; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; CAVITY RESONATORS; DECAY; GROUND STATES; OPTICS; PHOTON-ATOM COLLISIONS; PHOTONS; PROBABILITY; QUANTUM COMPUTERS; QUANTUM ELECTRODYNAMICS; QUANTUM ENTANGLEMENT; QUBITS; RADIATION PRESSURE

Citation Formats

Deng, Z. J., Graduate School of the Chinese Academy of Sciences, Beijing 100049, Feng, M., and Gao, K. L. Simple scheme for generating an n-qubit W state in cavity QED. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Deng, Z. J., Graduate School of the Chinese Academy of Sciences, Beijing 100049, Feng, M., & Gao, K. L. Simple scheme for generating an n-qubit W state in cavity QED. United States. doi:10.1103/PHYSREVA.73.0.
Deng, Z. J., Graduate School of the Chinese Academy of Sciences, Beijing 100049, Feng, M., and Gao, K. L. Sun . "Simple scheme for generating an n-qubit W state in cavity QED". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786800,
title = {Simple scheme for generating an n-qubit W state in cavity QED},
author = {Deng, Z. J. and Graduate School of the Chinese Academy of Sciences, Beijing 100049 and Feng, M. and Gao, K. L.},
abstractNote = {A simple scheme is proposed to generate an n-qubit W state in cavity QED. Conditioned on no photon leakage from the cavity, the n-qubit W state can be generated by resonant interaction between atoms and the cavity if the cavity is initially prepared in the single-photon state and all the atoms are in the ground states. We check the time evolution of the system involving decay, and show that, since the required interaction time is very short, with present cavity QED techniques, the success probability of our scheme is almost unity.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}