Entangled light in moving frames

被引：73

作者：

Gingrich, RM ^{[1
]}

Bergou, AJ ^{[1
]}

Adami, C ^{[1
]}

机构：

[1] 126 347 CALTECH, Jet Prop Lab, Quantum Comp Technol Grp, Pasadena, CA 91109 USA

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.68.042102

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We calculate the entanglement between a pair of polarization-entangled photon beams as a function of the reference frame, in a fully relativistic framework. We find the transformation law for helicity basis states and show that, while it is frequency independent, a Lorentz transformation on a momentum-helicity eigenstate produces a momentum-dependent phase. This phase leads to changes in the reduced polarization density matrix, such that entanglement is either decreased or increased, depending on the boost direction, the rapidity, and the spread of the beam.

引用

页码：1 / 042102

页数：4

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