Decoherence and Fidelity in Teleportation of Coherent Photon-Added Two-Mode Squeezed Thermal States
| Autor: | Heng-Mei Li, Hong-Chun Yuan, Zhen Wang, Zhi-Long Wan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Normalization (statistics) Photon Hermite polynomials Quantum decoherence Physics and Astronomy (miscellaneous) General Mathematics Quantum Physics 01 natural sciences Teleportation 010309 optics Quantum mechanics 0103 physical sciences Wigner distribution function Coherent states 010306 general physics Quantum teleportation |
| Zdroj: | International Journal of Theoretical Physics. 57:941-950 |
| ISSN: | 1572-9575 0020-7748 |
| DOI: | 10.1007/s10773-017-3626-x |
| Popis: | We theoretically introduce a kind of non-Gaussian entangled resources, i.e., coherent photon-added two-mode squeezed thermal states (CPA-TMSTS), by successively performing coherent photon addition operation to the two-mode squeezed thermal states. The normalization factor related to bivariate Hermite polynomials is obtained. Based upon it, the nonclassicality and decoherence process are analyzed by virtue of the Wigner function. It is shown that the coherent photon addition operation is an effective way in generating partial negative values of Wigner function, which clearly manifests the nonclassicality and non-Gaussianity of the target states. Additionally, the fidelity in teleporting coherent states using CPA-TMSTS as entangled resource is quantified both analytically and numerically. It is found that the CPA-TMSTS is an entangled resource of high-efficiency and high-fidelity in quantum teleportation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink