Total probability arbitrary multiparty JRSP method

A joint preparation, quantum state technology, applied in the field of communication, can solve the problem of difficult to find a step-by-step preparation strategy for a universal measurement base

CN103618695AInactive Publication Date: 2014-03-05NANJING UNIV OF INFORMATION SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-03-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a total probability arbitrary multiparty JRSP method. According to the method, a core sender constructs a real part measurement base in accordance with real part information of quantum states needing to be prepared, particles owned by the core sender are measured, and measuring results are sent to corresponding auxiliary senders and receivers through classical channels; all the auxiliary senders construct imaginary part measurement bases by the adoption of the measuring results and owned imaginary part information, particles owned by the auxiliary senders are measured respectively, and measuring results are sent to the receivers through classical channels; at last, the receivers conduct certain unitary operation on the particles in hands according to the measuring results of the core sender and the measuring results of all the auxiliary senders, and the particles needing to be prepared are obtained. By means of the total probability arbitrary multiparty JRSP method, the methods of quantum information fragmentation, quantum entanglement and quantum measurement are used, arbitrary multiparty JRSP is achieved, and the method is safe and reliable, flexible and universal, and good in practical value.
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Description

technical field

[0001] The invention belongs to the technical field of communication, and specifically refers to a method for remote joint preparation of any multi-party quantum states with full probability. Background technique

[0002] As we all know, current communication channels transmit digital or analog signals. Due to the non-ideal frequency response characteristics of the channel, noise interference and other interference mixed in when the signal is transmitted through the channel, the transmitted signal is damaged and the received signal waveform is distorted or the received digital signal symbol is wrong. For this kind of interference, there are currently two ways to ensure the correct transmission of the channel: one is to improve the performance and quality of lines and transmission equipment, such as using optical fibers; the other is to use error control strategies, such as cyclic redundancy check method Wait. However, improving lines and equipment requires ...

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Embodiment Construction

[0034] A full-probability arbitrary multi-party quantum state remote joint preparation method proposed by the present invention will be described in detail below in conjunction with the accompanying drawings:

[0035] The overall network topology of the present invention is as follows figure 1 As shown, the specific description is as follows:

[0036] Suppose the quantum state to be prepared is There are N+1 participants in total, including N senders and one receiver; among the N senders, one sender is the core sender, and the other N-1 senders are auxiliary senders; N is a natural number. A quantum channel consists of N EPR pairs, namely | Q ⟩ A 1 B 1 A 2 B 2 . . ...