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A Purification Scheme and Entanglement Distillations

Hiromichi Nakazato·Makoto Unoki·Kazuya Yuasa
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Abstract

A purification scheme which utilizes the action of repeated measurements on a (part of a total) quantum system is briefly reviewed and is applied to a few simple systems to show how it enables us to extract an entangled state as a target pure state. The scheme is rather simple (e.g., we need not prepare a specific initial state) and is shown to have wide applicability and flexibility, and is able to accomplish both the maximal fidelity and non-vanishing yield.

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Hiromichi Nakazato, Makoto Unoki, Kazuya Yuasa. 2004-03-01. A Purification Scheme and Entanglement Distillations. https://arxiv.org/abs/quant-ph/0403009

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