Title
Maximal atom–photon entanglement in a double- quantum system
Abstract
The atom---photon entanglement of a dressed atom and its spontaneous emission in a double-$$\\Lambda $$¿ closed-loop atomic system is studied under multi-photon resonance condition. It is shown that even in the absence of quantum interference due to the spontaneous emission, the von Neumann entropy is phase-sensitive and it can be controlled by either intensity or relative phase of the applied fields. It is demonstrated that for the special case of Rabi frequency of the applied fields, the system is maximally entangled. Moreover, an open-loop configuration is considered, and it is shown that the degree of entanglement can be controlled by intensity of the applied fields. Furthermore, in electromagnetically induced transparency condition, the system is disentangled. Such a system can be used for quantum information processing via entanglement using optical switching.
Year
DOI
Venue
2015
https://doi.org/10.1007/s11128-015-0969-1
Quantum Information Processing
Keywords
Field
DocType
Entanglement,Quantum entropy,Quantum control,Double-,\(\Lambda \),system
Cavity quantum electrodynamics,W state,Quantum electrodynamics,Quantum entanglement,Quantum mechanics,Photon entanglement,Squashed entanglement,Quantum teleportation,Quantum discord,Amplitude damping channel,Physics
Journal
Volume
Issue
ISSN
14
6
1570-0755
Citations 
PageRank 
References 
1
0.43
1
Authors
3
Name
Order
Citations
PageRank
zeinab kordi110.77
saeed ghanbari210.77
mohammad mahmoudi310.77