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Chinese Physics Letters

Nearly Deterministic Teleportation of a Photonic Qubit with Weak Cross-Kerr Nonlinearities

周建, 杨名, 卢艳, 曹卓良

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

为 teleporting 的计划一个未知 single-qubit photonic 状态被重游。在量 nonde-molition 大小的帮助下,计划现在能以一个几乎确定的方法被完成。weak-cross-Kerrnonlinearities-based 量 nondemolition 测量象钟状态分析器一样充当 entangler,并且因此在远距传物过程作为 CNOT 门起一个类似的作用。这改进用 nonunitary 使现在的计划比计划更有效射影的大小并且与当前的试验性的技术可行。

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为 teleporting 的计划一个未知 single-qubit photonic 状态被重游。在量 nonde-molition 大小的帮助下,计划现在能以一个几乎确定的方法被完成。weak-cross-Kerrnonlinearities-based 量 nondemolition 测量象钟状态分析器一样充当 entangler,并且因此在远距传物过程作为 CNOT 门起一个类似的作用。这改进用 nonunitary 使现在的计划比计划更有效射影的大小并且与当前的试验性的技术可行。
A scheme for teleporting an unknown single-qubit photonic state in a nearly deterministic and controlled manner is proposed via the weak cross-Kerr nonlinearities.The functions of the complicated CNOT operations and Bell-state analysis can be realized easily with the help of quantum nondemolition measurement technique.This improvement makes the present scheme more efficient than the schemes using nonunitaxy projective measurements.Discussions about this scheme show that it is feasible with the current experimental technology in optics.
提出两种实现多光子高维空间纠缠态的制备方案.首先给出一种基于后验选择技术的实现方案,此方案以一定的概率实现.然后以基于弱交叉科尔效应的控制路径(C-path)门为基础,给出任意双光子任意维度的空间纠缠态的制备方案,并将此方案推广到任意多光子任意维度的空间纠缠态的制备.这一制备方案的最大优点在于可以确定性的得到纠缠态,并且不需要复杂的后验选择技术,可以很方便的应用于量子信息过程,同时该方案在目前的实验条件下是可行的.