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Fusing multiple W states simultaneously with a Fredkin gate

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Date

2014-04-14

Author

Özaydın, Fatih
Buğu, Sinan
Yeşilyurt, Can
Altıntaş, Azmi Ali
Tame, Mark
Kaya Özdemir, Şahin

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Citation

Özaydın, F., Buğu, S., Yeşilyurt, C., Altıntaş, A. A., Tame, M. & Özdemir, S. (2014). Fusing multiple W states simultaneously with a fredkin gate. Physical Review A, 89(4), 1-7. doi:10.1103/PhysRevA.89.042311

Abstract

We propose an optical scheme to prepare large-scale entangled networks of W states. The scheme works by simultaneously fusing three polarization-encoded W states of arbitrary size via accessing only one qubit of each W state. It is composed of a Fredkin gate (controlled-swap gate), two fusion gates [as proposed in S. K. Ozdemir et al., New J. Phys. 13, 103003 (2011)], and an H-polarized ancilla photon. Starting with three n-qubit W states, the scheme prepares a new W state with 3(n - 1) qubits after postselection if both fusion gates operate successfully, i.e., a fourfold coincidence at the detectors. The proposed scheme reduces the cost of creating arbitrarily large W states considerably when compared to previously reported schemes.

Source

Physical Review A

Volume

89

Issue

4

URI

https://hdl.handle.net/11729/537
http://dx.doi.org/10.1103/PhysRevA.89.042311

Collections

  • FEF - Makale Koleksiyonu | Enformasyon Teknolojileri Bölümü / Department of Information Technologies [67]
  • Scopus İndeksli Makale Koleksiyonu [792]
  • WoS İndeksli Makale Koleksiyonu [810]



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