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

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.030304· OSTI ID:21448608

Yaping, Yang; Jingping, Xu; Hong, Chen ^[1]; Shiyao, Zhu ^[2]

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1. Department of Physics, Tongji University, Shanghai 200092 (China)
2. Department of Physics, Hong Kong Baptist University (Hong Kong)

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.

• OSTI ID: 21448608
• Journal Information: Physical Review. A, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevA.82.030304; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
DISTANCE
ENERGY LEVELS
INDEXES
LIFETIME
PHOTON EMISSION
QUANTUM ENTANGLEMENT
QUANTUM STATES
WAVELENGTHS
DOCUMENT TYPES
EMISSION