Yesilyurt, CanBugu, SinanOzaydin, FatihAltintas, Azmi AliTame, MarkYang, LanOzdemir, Sahin Kaya2024-05-252024-05-252016280740-32241520-854010.1364/JOSAB.33.0023132-s2.0-84994764978https://doi.org/10.1364/JOSAB.33.002313https://hdl.handle.net/20.500.14517/207Altintas, 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/0000-0002-5058-0248In 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 Americaeninfo:eu-repo/semantics/openAccess[No Keyword Available]ArticleQ3Q2331123132319WOS:000387766500028