Elementary optical gate for expanding an entanglement web

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

doi:10.1103/PhysRevA.77.030302

Elementary optical gate for expanding an entanglement web

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

Engineering Science and Mechanics

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

We introduce an elementary optical gate for expanding polarization entangled W states in which every pair of photons is entangled alike. The gate is composed of a pair of 50:50 beamsplitters and ancillary photons in the two-photon Fock state. By seeding one of the photons in an n -photon W state into this gate, we obtain an (n+2) -photon W state after postselection. This gate gives a better efficiency and a simpler implementation than previous proposals for W -state preparation.

Original language	English (US)
Article number	030302
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	77
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.77.030302
State	Published - Mar 25 2008

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.77.030302

Cite this

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AU - Tashima, Toshiyuki

AU - Özdemir, Şahin Kaya

AU - Yamamoto, Takashi

AU - Koashi, Masato

AU - Imoto, Nobuyuki

PY - 2008/3/25

Y1 - 2008/3/25

N2 - We introduce an elementary optical gate for expanding polarization entangled W states in which every pair of photons is entangled alike. The gate is composed of a pair of 50:50 beamsplitters and ancillary photons in the two-photon Fock state. By seeding one of the photons in an n -photon W state into this gate, we obtain an (n+2) -photon W state after postselection. This gate gives a better efficiency and a simpler implementation than previous proposals for W -state preparation.

AB - We introduce an elementary optical gate for expanding polarization entangled W states in which every pair of photons is entangled alike. The gate is composed of a pair of 50:50 beamsplitters and ancillary photons in the two-photon Fock state. By seeding one of the photons in an n -photon W state into this gate, we obtain an (n+2) -photon W state after postselection. This gate gives a better efficiency and a simpler implementation than previous proposals for W -state preparation.

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JF - Physical Review A - Atomic, Molecular, and Optical Physics

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ER -

Elementary optical gate for expanding an entanglement web

Abstract

All Science Journal Classification (ASJC) codes

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