High-dimensional asymmetric bidirectional controlled quantum teleportation method

Abstract

The invention discloses a high-dimensional asymmetric bidirectional controlled quantum teleportation method. The method comprises the following steps: step 1, establishing a quantum communication joint system based on three parties of Alice, Bob and Charlie; step 2, Alice and Bob respectively carry out generalized Bell measurement and generalized single particle measurement on particles owned by Alice and Bob, and publish measurement results; 3, the supervisor Charlie carries out single particle measurement on particles owned by the supervisor Charlie and publishes a measurement result; and step 4, the Alice and the Bob construct a full view of the original quantum state sent by the opposite side by using the measurement result. Bidirectional transmission of quantum information can be realized; the success probability of transmission and restoration of quantum information is 1, the difficulty of specific communication control is greatly reduced, and bidirectional controlled invisible state transmission is easier to physically realize.

Description

Technical field [0001] The present invention relates to the field of quantum communication technology, in particular to a high-dimensional asymmetric bidirectional controlled quantum teleportation method. Background [0002] With the progress of the times, people pay more and more attention to information security. Quantum informatics is a new type of interdisciplinary discipline produced by the combination of quantum mechanics and information science, which mainly includes quantum computing and quantum communication. Since its rise in the 1980s, research related to quantum communication has been booming. Compared with traditional communication methods, quantum communication has many advantages such as ensuring information security, improving communication accuracy, and increasing storage capacity, so it has attracted people's attention. After more than 30 years of research, quantum communication has extended the research directions of quantum secure communication, quantum telepo...

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Problems solved by technology

However, this scheme uses a two-dimensional seven-particle state as a quantum channel to achieve two-way asymmetric control. The information carried by the particle state is less, and the security of the quantum communication scheme needs to be improved.

[0007] To sum up, the two-way controlled quantum teleportation in the existing technology is mainly assumed to occur in low-dimensional space. In addition, researchers often assume that the number of particles to be transmitted on both sides of the communication is equal, but in the discussion of practical problems , the two sides of the communication may have different numbers of particles to be transmitted, which makes the assumption contrary to the reality

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