Soochow University

Chinese Academy of Sciences

Min Jiang

Qing Li

Zhixin Xia

Bin Sun

Hong Chen

Jiong Li

Kefeng Pu

Ao Wang

Zongyi Li

Fenxiang Fu

Tao Cai

Tianyu Miao

Taichao Li

The invention provides an undetermined terminal-based accelerated joint quantum remote state preparation method, including: determining chain channels between at least two sending terminals and a receiving terminal edge node, and determining GHZ channels between the receiving terminal edge node and a plurality of candidate receiving terminals; jointly preparing, by the at least two sending terminals together, to-be-transferred information for the receiving terminal edge node; and sending, by the receiving terminal edge node, the to-be-transferred information to the plurality of candidate receiving terminals, after a target receiving terminal is determined, performing, by the other candidate receiving terminals, a measurement operation, and performing, by the target receiving terminal, corresponding unitary transformation to recover the to-be-transferred information. Information transfer efficiency and information security are greatly improved, thereby resolving a current problem that a terminal lacks a scheme of remotely preparing a quantum state in a case that a receiving terminal is indefinite.

Undetermined terminal-based accelerated joint quantum remote state preparation method

A screening method is provided. Cells secreting target antibodies are screened by mixing candidate cells labeled with a first fluorescent molecule, a capture antigen and a labeled antibody against a target antibody and incubating, labeling using a high content cell imager and sorting using flow cytometry so as to screen cells secreting target antibodies. The screening method disclosed in the present application can automatically complete the labeling and sorting of target candidate cells in high throughput by labeling with a fluorescent molecule in combination with high-content cell imager and flow cytometer, so as to provide sufficient quantity of cells for subsequent amplification to obtain their antibody sequences and screen affinity antibodies. This method greatly improves the screening efficiency.

Screening method

The present invention discloses a d-dimensional chain teleportation method for random transmission based on measurement results of relay nodes. The method includes: two communicating parties are an information sender Alice and an information receiver Bob, a particle t carries an unknown quantum state and is held by the information sender Alice, Alice holds the particle t and a particle A, a first intermediate node Charlieholds a particle Band a particle A, a second intermediate node Charlieholds a particle Band a particle A, . . . , and a k(k=2, 3, . . . , P) intermediate node Charlie k holds a particle Band a particle A. The beneficial effect of the present invention is as follows: any relay node can randomly transmit its generalized Bell measurement result to the information sender Alice or the information receiver Bob, thereby greatly reducing connection restrictions of a classical channel.

D-dimensional chain teleportation method for random transmission based on measurement results of relay nodes

The invention relates to a method for setting and operating redundant paths in a quantum communication network, wherein a transmitter implements simultaneous transmission of signals on a working path and protection paths. The signal transmitted on the working path is a primary signal, and the signals transmitted on the protection paths are follow-up signals. In a case that the working path is normal, the transmitter forwards the primary signal on the working path level by level, to implement long distance transmission of a quantum signal. In a case that the working path fails, a proxy working path is selected from the remaining protection paths with the highest priority, and the transmission of information is eventually completed on the proxy working path. It can be prevented that unknown quantum information is damaged and becomes unrecoverable during transmission, thereby greatly improving the security, stability, and reliability of information transmission during quantum communication.

Method for configuring and operating redundant path in quantum communication network

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Suzhou, China

Min Jiang