【摘要】 利用多粒子非对称量子纠缠态,提出一种多体高维非对称量子信道的量子受控密集编码方案。采用量子测量的方法控制纠缠量子信道和密集编码经典信息的传送,通过构造幺正变换矩阵和正交量子测量,纯化量子信道,以一定的概率实现量子受控密集编码,解决了实际量子信道退相干影响下最大纠缠态提取的问题,实现了N方发送方和1方接收方之间密集编码传送信息量的控制,提高了密集编码可调控传送信息量,扩大了调控范围。更多还原

【Abstract】 A scheme of controlled dense coding was proposed by using multi-parties in non-symmetric and high dimensional quantum channel.The quantum channel and the amount of the classic information of dense coding are controlled with the method of quantum measurement.By performing some unitary operations and some orthogonal quantum measurements on the quantum state,the quantum channel is purified.Thus,controlled dense coding is realized with some probability.It solves the extraction of the maximally quantum state in the case of decoherence in the practical quantum channel.It is successful to control dense coding between the N senders and the receiver and the efficiency of controlled dense coding is improved.更多还原