Efficient electronic entanglement concentration assisted with single mobile electron

TL;DR

This paper introduces a novel entanglement concentration protocol for mobile electrons that uses charge detection, allowing for efficient conversion of less-entangled pairs into maximally entangled states without prior knowledge of their coefficients.

Contribution

The protocol is unique in enabling entanglement concentration with a single mobile electron and charge detection, improving success probability and not requiring coefficient knowledge.

Findings

Achieves higher success probability through repeatability

Does not require prior knowledge of initial state coefficients

Applicable to distributed quantum information processing

Abstract

We present an efficient entanglement concentration protocol (ECP) for mobile electrons with charge detection. This protocol is quite different from other ECPs for one can obtain a maximally entangled pair from a pair of less-entangled state and a single mobile electron with a certain probability. With the help of charge detection, it can be repeated to reach a higher success probability. It also does not need to know the coefficient of the original less-entangled states. All these advantages may make this protocol useful in current distributed quantum information processing.