Time-bin entangled photon pairs from Bragg-reflection waveguides

Huan Chen; Silke Auchter; Maximilian Prilmüller; Alexander Schlager; Thomas Kauten; Kaisa Laiho; Benedikt Pressl; Holger Suchomel; Martin Kamp; Sven Höfling; Christian Schneider; Gregor Weihs

doi:10.1063/1.5038186

Time-bin entangled photon pairs from Bragg-reflection waveguides

Huan Chen
, Silke Auchter
, Maximilian Prilmüller
, Alexander Schlager
, Thomas Kauten
, Kaisa Laiho
, Benedikt Pressl
, Holger Suchomel
, Martin Kamp
, Sven Höfling
, Christian Schneider
, Gregor Weihs

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

Abstract

Semiconductor Bragg-reflection waveguides are well-established sources of correlated photon pairs as well as promising candidates for building up integrated quantum optics devices. Here, we use such a source with optimized non-linearity for preparing time-bin entangled photons in the telecommunication wavelength range. By taking advantage of pulsed state preparation and efficient free-running single-photon detection, we drive our source at low pump powers, which results in a strong photon-pair correlation. The tomographic reconstruction of the state’s density matrix reveals that our source exhibits a high degree of entanglement. We extract a concurrence of 88.9(1.8)% and a fidelity of 94.2(9)% with respect to a Bell state.

Original language	English
Article number	080804
Number of pages	9
Journal	APL Photonics
Volume	3
Issue number	8
Early online date	1 Aug 2018
DOIs	https://doi.org/10.1063/1.5038186
Publication status	Published - Aug 2018

Keywords

Time-bin entanglement
Quantum state tomography
Parametric down-conversion
Bragg-reflection waveguide

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Chen-2018-Time-bin-APLPhoton-080804-CC
© 2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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title = "Time-bin entangled photon pairs from Bragg-reflection waveguides",

abstract = "Semiconductor Bragg-reflection waveguides are well-established sources of correlated photon pairs as well as promising candidates for building up integrated quantum optics devices. Here, we use such a source with optimized non-linearity for preparing time-bin entangled photons in the telecommunication wavelength range. By taking advantage of pulsed state preparation and efficient free-running single-photon detection, we drive our source at low pump powers, which results in a strong photon-pair correlation. The tomographic reconstruction of the state{\textquoteright}s density matrix reveals that our source exhibits a high degree of entanglement. We extract a concurrence of 88.9(1.8)\% and a fidelity of 94.2(9)\% with respect to a Bell state.",

keywords = "Time-bin entanglement, Quantum state tomography, Parametric down-conversion, Bragg-reflection waveguide",

author = "Huan Chen and Silke Auchter and Maximilian Prilm{\"u}ller and Alexander Schlager and Thomas Kauten and Kaisa Laiho and Benedikt Pressl and Holger Suchomel and Martin Kamp and Sven H{\"o}fling and Christian Schneider and Gregor Weihs",

note = "This work was supported by the Austrian Science Fund (FWF) through the project nos. I 2065 and J 4125, the DFG project no. SCHN1376/2-1, the ERC project EnSeNa (257531), the State of Bavaria and China Scholarship Council (201503170272). ",

year = "2018",

month = aug,

doi = "10.1063/1.5038186",

language = "English",

volume = "3",

journal = "APL Photonics",

issn = "2378-0967",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Time-bin entangled photon pairs from Bragg-reflection waveguides

AU - Chen, Huan

AU - Auchter, Silke

AU - Prilmüller, Maximilian

AU - Schlager, Alexander

AU - Kauten, Thomas

AU - Laiho, Kaisa

AU - Pressl, Benedikt

AU - Suchomel, Holger

AU - Kamp, Martin

AU - Höfling, Sven

AU - Schneider, Christian

AU - Weihs, Gregor

N1 - This work was supported by the Austrian Science Fund (FWF) through the project nos. I 2065 and J 4125, the DFG project no. SCHN1376/2-1, the ERC project EnSeNa (257531), the State of Bavaria and China Scholarship Council (201503170272).

PY - 2018/8

Y1 - 2018/8

N2 - Semiconductor Bragg-reflection waveguides are well-established sources of correlated photon pairs as well as promising candidates for building up integrated quantum optics devices. Here, we use such a source with optimized non-linearity for preparing time-bin entangled photons in the telecommunication wavelength range. By taking advantage of pulsed state preparation and efficient free-running single-photon detection, we drive our source at low pump powers, which results in a strong photon-pair correlation. The tomographic reconstruction of the state’s density matrix reveals that our source exhibits a high degree of entanglement. We extract a concurrence of 88.9(1.8)% and a fidelity of 94.2(9)% with respect to a Bell state.

AB - Semiconductor Bragg-reflection waveguides are well-established sources of correlated photon pairs as well as promising candidates for building up integrated quantum optics devices. Here, we use such a source with optimized non-linearity for preparing time-bin entangled photons in the telecommunication wavelength range. By taking advantage of pulsed state preparation and efficient free-running single-photon detection, we drive our source at low pump powers, which results in a strong photon-pair correlation. The tomographic reconstruction of the state’s density matrix reveals that our source exhibits a high degree of entanglement. We extract a concurrence of 88.9(1.8)% and a fidelity of 94.2(9)% with respect to a Bell state.

KW - Time-bin entanglement

KW - Quantum state tomography

KW - Parametric down-conversion

KW - Bragg-reflection waveguide

U2 - 10.1063/1.5038186

DO - 10.1063/1.5038186

M3 - Article

SN - 2378-0967

VL - 3

JO - APL Photonics

JF - APL Photonics

IS - 8

M1 - 080804

ER -

Time-bin entangled photon pairs from Bragg-reflection waveguides

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Keywords

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