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Quantum stealth state transfer system classification method based on Schmidt rank relation

A technology of teleportation and classification method, which is applied in the field of classification of quantum teleportation system, and can solve problems such as finding projection measurement bases and corresponding unitary transformation matrices systematically.

Inactive Publication Date: 2019-10-18
NORTHWEST UNIV(CN) +1
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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a classification method for quantum teleportation systems based on the Schmidt rank relation, so as to solve the problem that the prior art cannot systematically search for projections in the quantum teleportation protocol design. The technical problem of the specific form of the measurement basis and the corresponding unitary transformation matrix

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  • Quantum stealth state transfer system classification method based on Schmidt rank relation
  • Quantum stealth state transfer system classification method based on Schmidt rank relation
  • Quantum stealth state transfer system classification method based on Schmidt rank relation

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[0019] This embodiment provides a classification method for quantum teleportation systems based on the Schmidt rank relation, such as figure 1 shown, including the following steps:

[0020] Step 1, select two states in the entangled state as the first entangled state and the second entangled state respectively; the entangled state in the present invention includes a plurality of states with definite names, such as Bell state, GHZ state, W state, Brown state.

[0021] Step 2, the first entangled state is used as the pre-transmission entangled state, the second entangled state is used as the entangled state of the quantum channel, and the Schmidt rank of the pre-transmission entangled state is n I , the Schmidt rank of the entangled state of the quantum channel is n C , the Schmidt rank of the total quantum system composed of the pre-transported entangled state and the entangled state of the quantum channel is n S , that is, the quantum teleportation system is obtained;

[0...

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Abstract

The invention provides a quantum stealth transfer system classification method based on a Schmidt rank relationship. The method comprises the following steps: step 1, selecting two states as a first entangled state and a second entangled state respectively; step 2, taking the first entangled state as a pre-transmission entangled state, taking the second entangled state as an entangled state of thequantum channel, taking the Schmidt rank of the pre-transmission entangled state as nI, taking the Schmidt rank of the entangled state of the quantum channel as nC, and taking the Schmidt rank of a total subsystem formed by the pre-transmission entangled state and the quantum channel; step 3, if the Schmidt rank meets the condition that nC is greater than or equal to nI, executing the step 4; otherwise, reselecting two states from the entangled states as a first entangled state and a second entangled state, and executing the step 2; and step 4, if nS is equal to nI, obtaining a projection measurement base and a unitary transformation matrix through linear transformation; and if nS is equal to knI, obtaining a projection measurement base and a unitary transformation matrix in a quantum Fourier transformation mode. According to the method, a projection measurement base and a unitary transformation matrix are obtained through linear transformation and quantum Fourier transformation respectively.

Description

technical field [0001] The invention relates to a classification method for quantum teleportation systems, in particular to a classification method for quantum teleportation systems based on Schmidt rank relations. Background technique [0002] Since Bennet et al. first proposed the quantum teleportation protocol based on EPR pairs in 1993, quantum teleportation has become one of the important research objects in the field of quantum communication. People have successively proposed many different theoretically and experimentally feasible teleportation protocols Particle scheme. However, different entangled state transmissions correspond to different operation modes. Obtaining the specific form of the projective measurement basis and the corresponding unitary transformation matrix is ​​a key point in the design of quantum teleportation protocols, and the existing literature does not give a solution to this key point. general method. [0003] Existing literature such as Yu Y...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/70H04L9/08
CPCH04B10/70H04L9/0852
Inventor 曹正文冯亚萍宋丹张同意唐磊罗迒哉曾贵华彭进业
Owner NORTHWEST UNIV(CN)
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