An elementary optical gate for expanding symmetrically shared entanglement

Toshiyuki Tashima, Sahin Ozdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We introduce an elementary optical gate based on post-selection strategy that enables not only to prepare polarization entangled W state, but also to grow this into a large-scale multi-photon W state. The gate is composed of a pair of 50:50 beamsplitters and a phase shifter, and it requires a two-photon ancillary state. When the input is a photon from an n-photon W state, the gate produces an (n∈+∈2)-photon W state for post-selected events. Moreover, we show that this gate can be used to prepare and expand GHZ states by a simple modification of the ancillary state.

Original languageEnglish (US)
Title of host publicationTheory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers
Pages70-82
Number of pages13
DOIs
StatePublished - Dec 1 2008
Event3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008 - Tokyo, Japan
Duration: Jan 30 2008Feb 1 2008

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5106 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008
CountryJapan
CityTokyo
Period1/30/082/1/08

Fingerprint

Entanglement
Photon
Photons
GHZ State
Phase shifters
Expand
Polarization

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)

Cite this

Tashima, T., Ozdemir, S., Yamamoto, T., Koashi, M., & Imoto, N. (2008). An elementary optical gate for expanding symmetrically shared entanglement. In Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers (pp. 70-82). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5106 LNCS). https://doi.org/10.1007/978-3-540-89304-2-7
Tashima, Toshiyuki ; Ozdemir, Sahin ; Yamamoto, Takashi ; Koashi, Masato ; Imoto, Nobuyuki. / An elementary optical gate for expanding symmetrically shared entanglement. Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers. 2008. pp. 70-82 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).
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Tashima, T, Ozdemir, S, Yamamoto, T, Koashi, M & Imoto, N 2008, An elementary optical gate for expanding symmetrically shared entanglement. in Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 5106 LNCS, pp. 70-82, 3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008, Tokyo, Japan, 1/30/08. https://doi.org/10.1007/978-3-540-89304-2-7

An elementary optical gate for expanding symmetrically shared entanglement. / Tashima, Toshiyuki; Ozdemir, Sahin; Yamamoto, Takashi; Koashi, Masato; Imoto, Nobuyuki.

Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers. 2008. p. 70-82 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5106 LNCS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Tashima T, Ozdemir S, Yamamoto T, Koashi M, Imoto N. An elementary optical gate for expanding symmetrically shared entanglement. In Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers. 2008. p. 70-82. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). https://doi.org/10.1007/978-3-540-89304-2-7