Entanglement on demand through time reordering

被引：73

作者：

Avron, J. E. ^{[1
]}

Bisker, G. ^{[1
]}

Gershoni, D. ^{[1
]}

Lindner, N. H. ^{[1
]}

Meirom, E. A. ^{[1
]}

Warburton, R. J. ^{[2
]}

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[2] Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.100.120501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Entangled photons can be generated "on demand" in a novel scheme involving unitary time reordering of the photons emitted in a radiative decay cascade. The scheme yields polarization entangled photon pairs, even though prior to reordering the emitted photons carry significant "which path information" and their polarizations are unentangled. This shows that quantum chronology can be manipulated in a way that is lossless and deterministic (unitary). The theory can, in principle, be tested and applied to the biexciton cascade in semiconductor quantum dots.

引用

页数：4

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