Coherence-induced entanglement

We show how atomic coherence can lead to entanglement between two thermal fields at a temperature T. We first show that the passage of a three-level atom in V configuration without coherence cannot create entanglement. However, if the excited states are driven by a microwave field, the resulting ato...

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Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2005-07, Vol.72 (1), Article 010303
Main Authors: Li, Fu-li, Xiong, Han, Zubairy, M. Suhail
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
EXCITED STATES
MICROWAVE RADIATION
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
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description We show how atomic coherence can lead to entanglement between two thermal fields at a temperature T. We first show that the passage of a three-level atom in V configuration without coherence cannot create entanglement. However, if the excited states are driven by a microwave field, the resulting atomic coherence can lead to entanglement between the thermal fields. We show that, no matter how high the temperature of the fields is, the thermal fields can always be entangled in the presence of atomic coherence.
doi_str_mv 10.1103/PhysRevA.72.010303
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects ATOMIC AND MOLECULAR PHYSICS
ATOMS
EXCITED STATES
MICROWAVE RADIATION
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
title Coherence-induced entanglement
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