Inseparability of photon-added Gaussian states
Journal Article
·
· Physical Review. A
- Department of Applied Physics, Xian Jiaotong University, Xian 710049 (China)
- Department of Physics, Hong Kong Baptist University, Hong Kong (China)
The inseparability of photon-added Gaussian states which are generated from two-mode Gaussian states by adding photons is investigated. According to the established inseparability conditions [New J. Phys. 7, 211 (2005); Phys. Rev. Lett. 96, 050503 (2006)], we find that even if a two-mode Gaussian state is separable, the photon-added Gaussian state becomes entangled when the purity of the Gaussian state is larger than a certain value. The lower bound of entanglement of symmetric photon-added Gaussian states is derived. The result shows that entanglement of the photon-added Gaussian states is involved with high-order moment correlations. We find that fidelity of teleporting coherent states cannot be raised by employing the photon-added Gaussian states as a quantum channel of teleportation.
- OSTI ID:
- 20991103
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 75; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Entanglement swapping of two-mode Gaussian states in a thermal environment
Teleportation of squeezing: Optimization using non-Gaussian resources
Entanglement criteria via the uncertainty relations in su(2) and su(1,1) algebras: Detection of non-Gaussian entangled states
Journal Article
·
Mon Jan 31 23:00:00 EST 2005
· Physical Review. A
·
OSTI ID:20650059
Teleportation of squeezing: Optimization using non-Gaussian resources
Journal Article
·
Tue Dec 14 23:00:00 EST 2010
· Physical Review. A
·
OSTI ID:21528858
Entanglement criteria via the uncertainty relations in su(2) and su(1,1) algebras: Detection of non-Gaussian entangled states
Journal Article
·
Sat Jul 15 00:00:00 EDT 2006
· Physical Review. A
·
OSTI ID:20852887