Exact Solution to Spin Squeezing of the Arbitrary-Range Spin Interaction and Transverse Field Model
Xing Chen** , Zhen-Wei Zhang, Huan Zhao, Nuan-Rang Wang, Ren-Fu Yang, Ke-Ming Feng
Beijing Institute of Radio Metrology and Measurement, Science and Technology on Metrology and Calibration Laboratory, Beijing 100854
Abstract ：We investigate spin squeezing effects of trapped ions in an off-resonance optical potential system using the arbitrary range spin–spin interaction and transverse field model. The collective spin noises at any time are analyzed exactly. The general expression of spin squeezing factor is presented for arbitrary-range spin interaction. For the nearest-neighbor and next-nearest neighbor spin interaction model, the analytic solutions are reduced from the general expressions. It is shown that the maximum spin squeezing is enhanced for the general arbitrary-range spin interaction compared with the nearest-neighbor interaction model as the long-range interaction with arbitrary sites enforces stronger correlation.
收稿日期: 2016-06-14
出版日期: 2016-10-27
:
42.50.Dv
(Quantum state engineering and measurements)
03.67.Ac
(Quantum algorithms, protocols, and simulations)
03.67.Lx
(Quantum computation architectures and implementations)
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2016, Vol. 33 
