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半导体光子学与技术：英文版

Scheme for Teleportation of an Unknown Frequency state by Using an Acousto—optical Modulator

XIANGShao-hua, YANGXiong, SONGKe-hui

Published Jan 1, 2003• 0 citations
OpenAlex

Abstract

A very simple scheme is presented for teleporting an unknown frequency state with the successful probability of 50%. Two acoustic-optical modulators and four narrow band photodetectors in the proposed scheme are used. One advantage of our scheme is that no Bell-state measurement is need and no any unitary transformation is performed.

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Comment on “Manipulating the frequency-entangled states by an acoustic-optical modulator”

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A recent theoretical paper by Shi et al. [Phys. Rev. A 61, 064102 (2000)] proposes a scheme for entanglement swapping utilizing acousto-optic modulators without requiring a Bell-state measurement. In this Comment, we show that the proposal is flawed and no entanglement swapping can occur without measurement.

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ACTA PHOTONICA SINICA•Jan 1, 2008•1 citation
We propose a simple experimental scheme in which an unknown two-qubit state is faithfully and deterministically teleported from Alice to Bob. The scheme is constructed with four photons from parametric down conversion, linear optical elements, and conventional photon detectors, all of which are available in current technology. It is shown that the probability of successful teleportation ideally reaches 100% based on single-photon two-qubit-assisted Bell-state measurement, which can distinguish all four Bell-states simultaneously via conventional photon detectors. By generalizing the scheme, the teleportation of an unknown multi-qubit system can also be realized.