Soochow University

Zhixin Xia

Min Jiang

Hong Chen

Tuo Shi

Lei Chen

Qing Li

Jiachao Xu

Tao Cai

Fenxiang Fu

Wenjuan Jiang

Provided is a FeCrCuTiV high-entropy alloy powder for laser melting deposition manufacturing and a preparation method thereof, in percent by weight, the composition of the high-entropy alloy powder is: chromium 17-20%; copper 22-25%; titanium 16-19%; vanadium 17-20%; and ferrum 19-22%, wherein by utilizing the solid solution effect of alloying elements such as Ti, V and Cu of the high-entropy alloy, it can effectively alleviate the differences in thermal expansion coefficient, melting point, elastic modulus, etc. of the tungsten/steel or tungsten/copper heterogeneous interface, can reduce the residual stress level at the heterogeneous interface during the laser melting deposition manufacturing process and avoid the precipitation of Laves phase, and can meet the manufacturing requirements of tungsten/steel and tungsten/copper heterogeneous components for fusion reactors.

FeCrCuTiV high-entropy alloy powder for laser melting deposition manufacturing and preparation method thereof

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

Growing community of inventors

Suzhou, China

Zhixin Xia