Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

S. Sauge; M. Swillo; S. Albert-Seifried; G. B. Xavier; J. Waldebäck; M. Tengner; D. Ljunggren; A. Karlsson

doi:10.1364/OE.15.006926

Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

S. Sauge, M. Swillo, S. Albert-Seifried, G. B. Xavier, J. Waldebäck, M. Tengner, D. Ljunggren, A. Karlsson

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

41 Scopus citations

Abstract

We present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm at a maximum rate of 1.2 × 106 s^-1 THz^-1 mW^-1 after coupling to single-mode fiber. The quantum channel at 1555 nm and the synchronization signal gating the single photon detector are multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This implementation makes quantum communication applications compatible with current high-speed optical networks.

Original language	English
Pages (from-to)	6926-6933
Number of pages	8
Journal	Optics Express
Volume	15
Issue number	11
DOIs	https://doi.org/10.1364/OE.15.006926
State	Published - May 28 2007
Externally published	Yes

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title = "Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks",

abstract = "We present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm at a maximum rate of 1.2 × 106 s-1 THz-1 mW-1 after coupling to single-mode fiber. The quantum channel at 1555 nm and the synchronization signal gating the single photon detector are multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This implementation makes quantum communication applications compatible with current high-speed optical networks.",

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AU - Sauge, S.

AU - Swillo, M.

AU - Albert-Seifried, S.

AU - Xavier, G. B.

AU - Waldebäck, J.

AU - Tengner, M.

AU - Ljunggren, D.

AU - Karlsson, A.

PY - 2007/5/28

Y1 - 2007/5/28

N2 - We present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm at a maximum rate of 1.2 × 106 s-1 THz-1 mW-1 after coupling to single-mode fiber. The quantum channel at 1555 nm and the synchronization signal gating the single photon detector are multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This implementation makes quantum communication applications compatible with current high-speed optical networks.

AB - We present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm at a maximum rate of 1.2 × 106 s-1 THz-1 mW-1 after coupling to single-mode fiber. The quantum channel at 1555 nm and the synchronization signal gating the single photon detector are multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This implementation makes quantum communication applications compatible with current high-speed optical networks.

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ER -

Narrowband polarization-entangled photon pairs distributed over a WDM link for qubit networks

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