Optimizing the spectro-temporal properties of photon pairs from Bragg-reflection waveguides

H. Chen; K. Laiho; B. Pressl; A. Schlager; H. Suchomel; M. Kamp; S. Höfling; C. Schneider; G. Weihs

doi:10.1088/2040-8986/ab0fe9

Optimizing the spectro-temporal properties of photon pairs from Bragg-reflection waveguides

H. Chen, K. Laiho, B. Pressl, A. Schlager, H. Suchomel, M. Kamp, S. Höfling, C. Schneider, G. Weihs

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Abstract

Bragg-reflection waveguides (BRWs) fabricated from AlGaAs provide an interesting non-linear optical platform for photon-pair generation via parametric down-conversion (PDC). In contrast to many conventional PDC sources, BRWs are made of high refractive index materials and their characteristics are very sensitive to the underlying layer structure. First, we show
that the design parameters like the phasematching wavelength and the group
refractive indices of the interacting modes can be reliably controlled even in the presence of fabrication tolerances. We then investigate, how these characteristics can be taken advantage of when designing quantum photonic applications with BRWs. We especially concentrate on achieving a small differential group delay between the generated photons of a pair and then explore the performance of our design when realizing a Hong-Ou-Mandel interference experiment or generating spectrally multi-band polarization entangled states. Our results show that the versatility provided by engineering the dispersion in BRWs is important for employing them in different quantum optics tasks.

Original language	English
Article number	054001
Number of pages	10
Journal	Journal of Optics
Volume	21
Issue number	5
DOIs	https://doi.org/10.1088/2040-8986/ab0fe9
Publication status	Published - 2 Apr 2019

Keywords

Bragg-reflection waveguide
Parametric down-conversion
Phase matching
Quantum state engineering and measurements

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Chen_2019_J._Opt._21_054001
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Final published version, 1.57 MBLicence: CC BY

Cite this

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title = "Optimizing the spectro-temporal properties of photon pairs from Bragg-reflection waveguides",

abstract = "Bragg-reflection waveguides (BRWs) fabricated from AlGaAs provide an interesting non-linear optical platform for photon-pair generation via parametric down-conversion (PDC). In contrast to many conventional PDC sources, BRWs are made of high refractive index materials and their characteristics are very sensitive to the underlying layer structure. First, we showthat the design parameters like the phasematching wavelength and the grouprefractive indices of the interacting modes can be reliably controlled even in the presence of fabrication tolerances. We then investigate, how these characteristics can be taken advantage of when designing quantum photonic applications with BRWs. We especially concentrate on achieving a small differential group delay between the generated photons of a pair and then explore the performance of our design when realizing a Hong-Ou-Mandel interference experiment or generating spectrally multi-band polarization entangled states. Our results show that the versatility provided by engineering the dispersion in BRWs is important for employing them in different quantum optics tasks.",

keywords = "Bragg-reflection waveguide, Parametric down-conversion, Phase matching, Quantum state engineering and measurements",

author = "H. Chen and K. Laiho and B. Pressl and A. Schlager and H. Suchomel and M. Kamp and S. H{\"o}fling and C. Schneider and G. Weihs",

note = "This work was supported by the Austrian Science Fund (FWF) through the project nos. I-2065-N27 and J-4125-N27, the DFG project no. SCHN1376/2-1, the ERC project EnSeNa (257531), the State of Bavaria, China Scholarship Council project no. 201503170272, and Natural Science Foundation of Hunan Province of China project no. 2018JJ2467.",

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AU - Chen, H.

AU - Laiho, K.

AU - Pressl, B.

AU - Schlager, A.

AU - Suchomel, H.

AU - Kamp, M.

AU - Höfling, S.

AU - Schneider, C.

AU - Weihs, G.

N1 - This work was supported by the Austrian Science Fund (FWF) through the project nos. I-2065-N27 and J-4125-N27, the DFG project no. SCHN1376/2-1, the ERC project EnSeNa (257531), the State of Bavaria, China Scholarship Council project no. 201503170272, and Natural Science Foundation of Hunan Province of China project no. 2018JJ2467.

PY - 2019/4/2

Y1 - 2019/4/2

N2 - Bragg-reflection waveguides (BRWs) fabricated from AlGaAs provide an interesting non-linear optical platform for photon-pair generation via parametric down-conversion (PDC). In contrast to many conventional PDC sources, BRWs are made of high refractive index materials and their characteristics are very sensitive to the underlying layer structure. First, we showthat the design parameters like the phasematching wavelength and the grouprefractive indices of the interacting modes can be reliably controlled even in the presence of fabrication tolerances. We then investigate, how these characteristics can be taken advantage of when designing quantum photonic applications with BRWs. We especially concentrate on achieving a small differential group delay between the generated photons of a pair and then explore the performance of our design when realizing a Hong-Ou-Mandel interference experiment or generating spectrally multi-band polarization entangled states. Our results show that the versatility provided by engineering the dispersion in BRWs is important for employing them in different quantum optics tasks.

AB - Bragg-reflection waveguides (BRWs) fabricated from AlGaAs provide an interesting non-linear optical platform for photon-pair generation via parametric down-conversion (PDC). In contrast to many conventional PDC sources, BRWs are made of high refractive index materials and their characteristics are very sensitive to the underlying layer structure. First, we showthat the design parameters like the phasematching wavelength and the grouprefractive indices of the interacting modes can be reliably controlled even in the presence of fabrication tolerances. We then investigate, how these characteristics can be taken advantage of when designing quantum photonic applications with BRWs. We especially concentrate on achieving a small differential group delay between the generated photons of a pair and then explore the performance of our design when realizing a Hong-Ou-Mandel interference experiment or generating spectrally multi-band polarization entangled states. Our results show that the versatility provided by engineering the dispersion in BRWs is important for employing them in different quantum optics tasks.

KW - Bragg-reflection waveguide

KW - Parametric down-conversion

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DO - 10.1088/2040-8986/ab0fe9

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JO - Journal of Optics

JF - Journal of Optics

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M1 - 054001

ER -

Optimizing the spectro-temporal properties of photon pairs from Bragg-reflection waveguides

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