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

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

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.

Keywords: photon-number distribution squeezed coherent states normal ordering

Received: 20 October 2011
Revised: 27 April 2012
Accepted manuscript online:

PACS:

42.50.-p

(Quantum optics)

Fund: 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).

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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 2012 Chin. Phys. B 21 054206

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