Optimal controlled quantum stealth state transfer method with an adjustable threshold value for any unknown n particles

Abstract

The invention discloses an optimal controlled quantum stealth state transfer method with an adjustable threshold value for any unknown n particles. The invention discloses an optimal controlled quantum stealth state transfer method for any unknown n particles with an adjustable threshold value. The method is characterized by comprising the following steps that: a central service node prepares a corresponding entanglement state, and distributes corresponding entanglement particles to Alice and Bob of two communication parties and any one member of three control groups C1, C2 and C3 through a quantum channel; and other members of the three control groups C1, C2 and C3 execute C-by taking the particles sent by the central service node as control quantum bits and | 0) as target quantum bits. The NOT operation generates control particles. The threshold-adjustable optimal controlled quantum stealth transmission method for any unknown n particles has the advantages that the threshold-adjustable optimal controlled quantum stealth transmission method for any unknown n particles realizes the safety and flexibility of information transmission.

Description

technical field [0001] The invention relates to the quantum field, in particular to an optimally controlled quantum teleportation method for any unknown n particles with an adjustable threshold. Background technique [0002] Quantum information and quantum computing are emerging interdisciplinary subjects based on the principles of quantum mechanics, classical information science and classical computing science. Due to the characteristics of superposition, non-clonability, and inaccuracy of quantum states, quantum communication has unique advantages in terms of large communication capacity and high security, and can be widely used in military, national defense, and information security fields. Among them, thanks to the continuous updating and improvement of various branch protocols such as quantum secure direct communication, quantum dialogue, and quantum key distribution, quantum communication products with practical value have gradually been applied. [0003] Since Bennet...

AI Technical Summary

Problems solved by technology

Research on controlled quantum teleportation usually involves a fixed number of controllers, which limits the usability and flexibility of the protocol. If some controllers cannot provide services sometimes, the entire protocol cannot be realized.

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