Protected simultaneous quantum remote state preparation scheme by weak and reversal measurements in noisy environments  

作　　者：Mandal Manoj Kumar Choudhury Binayak S. Samanta Soumen 

机构地区：[1]Department of Mathematics,Indian Institute of Engineering Science and Technology,Shibpur B.Garden,Howrah 711103,West Bengal,India

出　　处：《Chinese Physics B》2024年第2期169-177,共9页中国物理B（英文版）

基　　金：Project supported by Indian Institute of Engineering Science and Technology, Shibpur, India

摘　　要：We discuss a quantum remote state preparation protocol by which two parties, Alice and Candy, prepare a single-qubit and a two-qubit state, respectively, at the site of the receiver Bob. The single-qubit state is known to Alice while the two-qubit state which is a non-maximally entangled Bell state is known to Candy. The three parties are connected through a single entangled state which acts as a quantum channel. We first describe the protocol in the ideal case when the entangled channel under use is in a pure state. After that, we consider the effect of amplitude damping(AD) noise on the quantum channel and describe the protocol executed through the noisy channel. The decrement of the fidelity is shown to occur with the increment in the noise parameter. This is shown by numerical computation in specific examples of the states to be created. Finally, we show that it is possible to maintain the label of fidelity to some extent and hence to decrease the effect of noise by the application of weak and reversal measurements. We also present a scheme for the generation of the five-qubit entangled resource which we require as a quantum channel. The generation scheme is run on the IBMQ platform.

关 键 词：multi-qubit entangled channel quantum remote state preparation noisy environments weak and reversal measurements 

分 类 号：O413[理学—理论物理] TN918[理学—物理]