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Annalen der Physik

Complete and Nondestructive Atomic Bell‐State Analysis Assisted by Inverse Engineering

Ri‐Hua Zheng, Yi‐Hao Kang, Zhi‐Cheng Shi, Yan Xia

Published Jun 19, 2018• 12 citations
Publisher

Abstract

Abstract A protocol for complete and nondestructive atomic Bell‐state analysis by using inverse engineering is presented. The setups for the Bell‐state analysis contain four atoms trapped in four separated cavities, respectively. The laser pulses designed by inverse engineering help in the manipulation of the transitions of atoms in a robust manner. By using the protocol, the information for distinguishing four Bell states of two information‐carrying atoms is encoded on two auxiliary atoms. Therefore, the four Bell states can be distinguished without being destroyed by detecting the states of the two auxiliary atoms. Moreover, as shown by the numerical simulations, the protocol has high successful probabilities to distinguish four Bell states when decoherence is considered. Thus, the protocol may provide some helpful perspectives for the quantum information tasks based on Bell states.

DOI
10.1002/andp.201800133

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