Chin. Phys. Lett.  2011, Vol. 28 Issue (8): 080303    DOI: 10.1088/0256-307X/28/8/080303
GENERAL |
N−Qubit W State of Spatially Separated Atoms via Fractional Adiabatic Passage
ZHENG An-Shou1,2**, LIU Ji-Bing3, CHEN Hong-Yun2
1School of Physics and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074
2School of Mathematics and Physics, China University of Geosciences, Wuhan 430074
3Hubei Key Laboratory of Pollutant Analysis and Reuse Technology and Department of Physics, Hubei Normal University, Huangshi 435002
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ZHENG An-Shou, LIU Ji-Bing, CHEN Hong-Yun 2011 Chin. Phys. Lett. 28 080303
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Abstract An alternative scheme is presented to realize an N−qubit W state with distant atoms trapped in spatially separated optical cavities coupled by optical fibers via a fractional adiabatic passage. The present scheme is tolerant to device parameter nonuniformity and does not need to accurately control the experimental time by employing the fractional stimulated Raman adiabatic passage. In addition, the excited states of atoms are adiabatically eliminated and no additional qubit is required. Cavity decay, fiber losses and atomic spontaneous emission can all be greatly suppressed in the present scheme.
Keywords: 03.67.Mn      42.50.Dv      42.50.Pq     
Received: 02 March 2011      Published: 28 July 2011
PACS:  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
  42.50.Dv (Quantum state engineering and measurements)  
  42.50.Pq (Cavity quantum electrodynamics; micromasers)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/8/080303       OR      https://cpl.iphy.ac.cn/Y2011/V28/I8/080303
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ZHENG An-Shou
LIU Ji-Bing
CHEN Hong-Yun
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