Quantum State Sharing by Using Two-Mode and Single-Mode Squeezed State Lights

Autor:	Zhang Jun-Xiang, Peng Kun-Chi, Xie Chang-De, Jing Jie-Tai
Rok vydání:	2005
Předmět:	Physics Quantum state Quantum mechanics Single-mode optical fiber Mode (statistics) General Physics and Astronomy Quantum Physics State (computer science) Noise (electronics) Quantum teleportation Squeezed coherent state Quadrature (mathematics)
Zdroj:	Chinese Physics Letters. 22:2751-2754
ISSN:	1741-3540 0256-307X
Popis:	We propose a quantum state sharing scheme for continuous variables using bright two-mode squeezed state and single-mode squeezed state light. The squeezing of a single-mode state is applied to enhance the security of information in quantum teleportation network. The signal-to-noise ratio of communication and the fidelity between the secret and reconstruction state are analysed. It is shown that both the receivers of Bob and Charlie cannot extract information with a high signal-to-noise ratio because of the large noise come from the other quadrature component of single mode squeezed state. Anyone of Bob and Charlie can retrieve the quantum state with a high signal-to-noise ratio if and only if the other one cooperates with the measurement.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28de9b702b70c242c96a876fbf74fa4f https://doi.org/10.1088/0256-307x/22/11/007 Zobrazit plný text záznamu