Oscillation behaviour in the photon-number distribution of squeezed coherent states

doi:10.1088/1674-1056/21/5/054206

中国物理B ›› 2012, Vol. 21 ›› Issue (5): 54206-054206.doi: 10.1088/1674-1056/21/5/054206

Oscillation behaviour in the photon-number distribution of squeezed coherent states

王帅¹ ²,张晓燕²,范洪义¹

1. Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;
2. Department of Physics, Heze University, Heze 274015, China

收稿日期:2011-10-20 修回日期:2012-04-27 出版日期:2012-04-01 发布日期:2012-04-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11175113), the Natural Science Foundation of Shandong Province, China (Grant No. ZR2010AQ024), and the Scientific Research Foundation of Heze University of Shandong Province, China (Grant No. XYJJKJ-1).

Oscillation behaviour in the photon-number distribution of squeezed coherent states

Wang Shuai(王帅)^a)b)†, Zhang Xiao-Yan(张晓燕)^b), and Fan Hong-Yi(范洪义)^a)

a. Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;
b. Department of Physics, Heze University, Heze 274015, China

Received:2011-10-20 Revised:2012-04-27 Online:2012-04-01 Published:2012-04-01
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11175113), the Natural Science Foundation of Shandong Province, China (Grant No. ZR2010AQ024), and the Scientific Research Foundation of Heze University of Shandong Province, China (Grant No. XYJJKJ-1).

摘要/Abstract

摘要： From the normally ordered form of the density operator of a squeezed coherent state (SCS), we directly derive the compact expression of the SCS's photon-number distribution (PND). Besides the known oscillation characteristics, we find that the PND is a periodic function with a period of π and extremely sensitive to phase. If the squeezing is strong enough, and the compound phase which is relevant to the complex squeezing and displacement parameters are assigned appropriate values, different oscillation behaviours in PND for even and odd photon numbers appear, respectively.

关键词: photon-number distribution, squeezed coherent states, normal ordering

Abstract: From the normally ordered form of the density operator of a squeezed coherent state (SCS), we directly derive the compact expression of the SCS's photon-number distribution (PND). Besides the known oscillation characteristics, we find that the PND is a periodic function with a period of π and extremely sensitive to phase. If the squeezing is strong enough, and the compound phase which is relevant to the complex squeezing and displacement parameters are assigned appropriate values, different oscillation behaviours in PND for even and odd photon numbers appear, respectively.

Key words: photon-number distribution, squeezed coherent states, normal ordering

中图分类号: (Quantum optics)

42.50.-p

王帅, 张晓燕, 范洪义. Oscillation behaviour in the photon-number distribution of squeezed coherent states[J]. 中国物理B, 2012, 21(5): 54206-054206.

Wang Shuai(王帅), Zhang Xiao-Yan(张晓燕), and Fan Hong-Yi(范洪义) . Oscillation behaviour in the photon-number distribution of squeezed coherent states[J]. Chin. Phys. B, 2012, 21(5): 54206-054206.

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Oscillation behaviour in the photon-number distribution of squeezed coherent states

Oscillation behaviour in the photon-number distribution of squeezed coherent states

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