Continuous frequency entanglement: Effective finite Hilbert space and entropy control

被引:414
作者
Law, CK
Walmsley, IA
Eberly, JH
机构
[1] Univ Rochester, Ctr Quantum Informat, Rochester, NY 14627 USA
[2] Univ Rochester, Rochester Theory Ctr Opt Sci & Engn, Rochester, NY 14627 USA
[3] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA
[4] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
关键词
D O I
10.1103/PhysRevLett.84.5304
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We examine the quantum structure of continuum entanglement and in the context of short-pulse down-conversion we answer the open question of how many of the uncountably many frequency modes contribute effectively to the entanglement. We derive a set of two-photon mode functions that provide an exact, discrete, and effectively finite basis for characterizing pairwise entanglement. Our analysis provides a basis for entropy control in two-photon pulses generated from down-conversion.
引用
收藏
页码:5304 / 5307
页数:4
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