High-frequency acousto-electric single-photon source

被引:86
作者
Foden, CL
Talyanskii, VI
Milburn, GJ
Leadbeater, ML
Pepper, M
机构
[1] Toshiba Res Europe Ltd, Cambridge Res Lab, Cambridge CB4 0WE, England
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[3] Univ Queensland, Dept Phys, St Lucia, Qld 4072, Australia
来源
PHYSICAL REVIEW A | 2000年 / 62卷 / 01期
关键词
D O I
10.1103/PhysRevA.62.011803
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose a single optical photon source for quantum cryptography based on the acoustoelectric effect. Surface acoustic waves (SAWs) propagating through a quasi-one-dimensional channel have been shown to produce packets of electrons that reside in the SAW minima and travel at the velocity of sound. In our scheme, the electron packets are injected into a p-type region, resulting in photon emission. Since the number of electrons in each packet can be controlled down to a single electron, a stream of single- (or N-) photon states, with a creation time strongly correlated with the driving acoustic field, should be generated.
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页数:4
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