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Damping Law of Photocount Distribution in a Dissipative Channel |
FAN Hong-Yi1**, LOU Sen-Yue1, HU Li-Yun2** |
1Department of Physics, Ningbo University, Ningbo 315211 2Department of Physics, Jiangxi Normal University, Nanchang 330022
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Cite this article: |
FAN Hong-Yi, LOU Sen-Yue, HU Li-Yun 2013 Chin. Phys. Lett. 30 090304 |
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Abstract For a dissipative channel governed by the master equation of the density operator describing the photon loss, we find that the photocount distribution formula at time t can be related to the initial photocount distribution by replacing the efficiency of the detector ξ with ξe?2κt, as if the quantum efficiency ξ of the detector becomes ξe?2κt. This law greatly simplifies the theoretical study of the photocount distribution for quantum optical fields.
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Received: 30 June 2013
Published: 21 November 2013
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PACS: |
03.65.-w
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(Quantum mechanics)
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42.50.Ct
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(Quantum description of interaction of light and matter; related experiments)
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