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Communications in Theoretical Physics

Entanglement of Generalized Two-Mode Binomial States and Teleportation

Dongmei Wang, YU You-hong

Published Apr 1, 2009• 1 citation
Publisher

Abstract

The entanglement of the generalized two-mode binomial states in the phase damping channel is studied by making use of the relative entropy of the entanglement. It is shown that the factors of q and p play the crucial roles in control the relative entropy of the entanglement. Furthermore, we propose a scheme of teleporting an unknown state via the generalized two-mode binomial states, and calculate the mean fidelity of the scheme.

DOI
10.1088/0253-6102/51/4/11

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The entanglement of the generalized two-mode binomial states in the phase damping channel is studied by making use of the relative entropy of the entanglement. It is shown that the factors of q and p play the crucial roles in control the relative entropy of the entanglement. Furthermore, we propose a scheme of teleporting an unknown state via the generalized two-mode binomial states, and calculate the mean fidelity of the scheme.
The entanglement behavior of two classes of multi-qubit system, GHZ and GHZ like states passing through a generalized amplitude damping channel is discussed. Despite this channel causes degradation of the entangled properties and consequently their abilities to perform quantum teleportation, one can always improve the lower values of the entanglement and the fidelity of the teleportrd state by controlling on Bell measurements, analyzer angle and channel's strength. Using GHZ-like state within a generalized amplitude damping channel is much better than using the normal GHZ-state, where the decay rate of entanglement and the fidelity of the teleported states are smaller than those depicted for GHZ state.
This study investigates quantum polarization in a two-mode generalized binomial state (TMGBS), a non-classical property of light, using quantum Stokes parameters and crucial in terms of its relationship to the purity and coherence of quantum states. Here we explore the criterion of quantum polarization in a generalized binomial state of light, which features a binomial photon number distribution in light pulses. Previous work by our group has examined other higher-order nonclassicality in single-and two-mode systems of GBS. Here we focus on the degree of polarization, an essential factor for observing entanglement in two-mode quantum states. Our findings emphasize the role of quantum polarization in detecting entanglement between optical modes, a fundamental resource for quantum communication protocols, including quantum teleportation and cryptography. The study demonstrates that TMGBS is an optimal candidate for achieving high degrees of quantum polarization under varied parameters, providing insights that could advance quantum technologies like quantum communication and metrology, where entanglement is pivotal.