An elementary optical gate for expanding symmetrically shared entanglement

Toshiyuki Tashima; Şahin Kaya Özdemir; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto

doi:10.1007/978-3-540-89304-2_7

An elementary optical gate for expanding symmetrically shared entanglement

Toshiyuki Tashima, Şahin Kaya Özdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto

Engineering Science and Mechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers
Publisher	Springer Verlag
Pages	70-82
Number of pages	13
ISBN (Print)	3540893032, 9783540893035
DOIs	https://doi.org/10.1007/978-3-540-89304-2_7
State	Published - 2008
Event	3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008 - Tokyo, Japan Duration: Jan 30 2008 → Feb 1 2008

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	5106 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Other

Other	3rd Workshop on Theory of Quantum Computation, Communication, and Cryptography, TQC 2008
Country/Territory	Japan
City	Tokyo
Period	1/30/08 → 2/1/08

All Science Journal Classification (ASJC) codes

Theoretical Computer Science
General Computer Science

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10.1007/978-3-540-89304-2_7

Cite this

Tashima, T., Özdemir, Ş. K., 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). Springer Verlag. https://doi.org/10.1007/978-3-540-89304-2_7

Tashima, Toshiyuki ; Özdemir, Şahin Kaya ; Yamamoto, Takashi et al. / An elementary optical gate for expanding symmetrically shared entanglement. Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers. Springer Verlag, 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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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.",

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Tashima, T, Özdemir, ŞK, 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, Springer Verlag, 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; Özdemir, Şahin Kaya; Yamamoto, Takashi et al.
Theory of Quantum Computation, Communication, and Cryptography - Third Workshop, TQC 2008, Revised Selected Papers. Springer Verlag, 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 proceeding › Conference contribution

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AU - Imoto, Nobuyuki

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AB - 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.

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Tashima T, Özdemir ŞK, 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. Springer Verlag. 2008. p. 70-82. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). doi: 10.1007/978-3-540-89304-2_7

An elementary optical gate for expanding symmetrically shared entanglement

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