Deterministic local doubling of <i>W</i> states

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Date

2016

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Publisher

Optical Soc Amer

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Abstract

In large quantum systems, multipartite entanglement can be found in many inequivalent classes. Preparing states of arbitrary size in different classes is important for performing a wide range of quantum protocols. W states, in particular, constitute a class with a variety of quantum networking protocols. However, all known schemes for preparing polarization encoded photonic W states are probabilistic, with resource requirements increasing at least sub-exponentially. We propose a deterministic scheme for preparing W states of size of any power of 2, which requires no prior entanglement and can be performed locally. We introduce an all-optical setup that can efficiently double the size of W states of arbitrary size. Our scheme advances the use of W states in real-world quantum networks and could be extended to other physical systems. (C) 2016 Optical Society of America

Description

Altintas, Azmi Ali/0000-0003-2383-4705; Yesilyurt, Can/0000-0003-4949-3523; Ozdemir, Sahin Kaya/0000-0002-2625-3992; Yang, Lan/0000-0002-9052-0450; Tame, Mark/0000-0002-5058-0248

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Citation

28

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Q3

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Q2

Source

Volume

33

Issue

11

Start Page

2313

End Page

2319