Long-lived entanglement between two distant atoms via left-handed materials

Yaping Yang; Jingping Xu; Hong Chen; Shi Yao ZHU

doi:10.1103/PhysRevA.82.030304

Long-lived entanglement between two distant atoms via left-handed materials

Yaping Yang^*, Jingping Xu, Hong Chen, Shi Yao ZHU

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

16 Citations (Scopus)

Abstract

A method is proposed to generate entanglement between two distant atoms and to preserve the entanglement for a long time by using the properties of refocusing and phase compensation of left-handed (negative-index) materials and spontaneous emission. A distance of ten wavelengths in our method compared with less than one wavelength in free space is achieved for the generation of concurrence of 1/2 between two identical atoms from an initially separable state. The concurrence can be kept for a very long time for ideal left-handed materials, and can be kept for tens of (or several) atomic lifetimes for absorptive left-handed materials.

Original language	English
Article number	030304
Journal	Physical Review A
Volume	82
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.82.030304
Publication status	Published - 27 Sept 2010

Scopus Subject Areas

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.82.030304

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abstract = "A method is proposed to generate entanglement between two distant atoms and to preserve the entanglement for a long time by using the properties of refocusing and phase compensation of left-handed (negative-index) materials and spontaneous emission. A distance of ten wavelengths in our method compared with less than one wavelength in free space is achieved for the generation of concurrence of 1/2 between two identical atoms from an initially separable state. The concurrence can be kept for a very long time for ideal left-handed materials, and can be kept for tens of (or several) atomic lifetimes for absorptive left-handed materials.",

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AU - Chen, Hong

AU - ZHU, Shi Yao

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Y1 - 2010/9/27

N2 - A method is proposed to generate entanglement between two distant atoms and to preserve the entanglement for a long time by using the properties of refocusing and phase compensation of left-handed (negative-index) materials and spontaneous emission. A distance of ten wavelengths in our method compared with less than one wavelength in free space is achieved for the generation of concurrence of 1/2 between two identical atoms from an initially separable state. The concurrence can be kept for a very long time for ideal left-handed materials, and can be kept for tens of (or several) atomic lifetimes for absorptive left-handed materials.

AB - A method is proposed to generate entanglement between two distant atoms and to preserve the entanglement for a long time by using the properties of refocusing and phase compensation of left-handed (negative-index) materials and spontaneous emission. A distance of ten wavelengths in our method compared with less than one wavelength in free space is achieved for the generation of concurrence of 1/2 between two identical atoms from an initially separable state. The concurrence can be kept for a very long time for ideal left-handed materials, and can be kept for tens of (or several) atomic lifetimes for absorptive left-handed materials.

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Long-lived entanglement between two distant atoms via left-handed materials

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