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Chinese Physics B

Complete hyperentangled state analysis and generation of multi-particle entanglement based on charge detection

Yan‐Qiang Ji, Zhao Jin, Ai‐Dong Zhu, Hong‐Fu Wang, Shou Zhang

Published May 1, 2014• 8 citations
Publisher

Abstract

We propose the schemes for implementing hyperentangled state analysis and generating four-electron high entangled states (including cluster state, |χ〉 state, and symmetric Dicke state) based on the charge detection of free electrons. These schemes are deterministic and rely only on charge detection and single-spin rotations. This method, which uses noninteracting electrons, is not only efficient but also saves on quantum resources.

DOI
10.1088/1674-1056/23/5/050306

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The cluster state is a special, highly entangled quantum state that provides a universal resource on which to perform measurement-based quantum computation. In this paper, we propose a scheme for the generation of such entanglement in a solid-state medium by the suppression of resonant tunneling of a ballistic electron by a nearby single-electron charge qubit. To investigate the viability of this scheme for the creation of cluster states, we performed numerical simulations and studied the entanglement interaction in detail. We show that high levels of entanglement can be achieved, with an average concurrence of 0.968.
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