Teleportation of a general two-photon state employing a polarization-entangled $$chi $$ state with nondemolition parity analyses |
| |
Authors: | Li Dong Jun-Xi Wang Qing-Yang Li Hai-Kuan Dong Xiao-Ming Xiu Ya-Jun Gao |
| |
Affiliation: | 1.College of Mathematics and Physics,Bohai University,Jinzhou,China;2.Centre for Quantum Technologies,National University of Singapore,Singapore,Singapore |
| |
Abstract: | Employing a polarization-entangled (chi ) state, which is a four-photon genuine entangled state, we propose a protocol teleporting a general two-photon polarization state. Firstly, the sender needs to perform one Controlled-NOT gate, one Hadamard gate, and one Controlled-NOT gate on the state to be teleported in succession. Secondly, the sender performs local nondemolition parity analyses based on cross-Kerr nonlinearities and publicizes the achieved outcomes. Finally, conditioned on the sender’s analysis outcomes, the receiver executes the single-photon unitary transformation operations on his own photons to obtain the state originally sit in the sender’s location. Due to the employment of nondemolition parity analyses rather than four-qubit joint measurement, it can be realized more feasible with currently available technologies. Moreover, the resources of Bell states can be achieved because the nondestructive measurement is exploited, which facilitates other potential tasks of quantum information processing. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|