Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide

T. Günthner; B. Pressl; K. Laiho; J. Geßler; Sven Höfling; M. Kamp; C. Schneider; G. Weihs

doi:10.1088/2040-8978/17/12/125201

Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide

T. Günthner, B. Pressl, K. Laiho, J. Geßler, Sven Höfling, M. Kamp, C. Schneider, G. Weihs

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

Abstract

Parametric downconversion (PDC) in semiconductor Bragg-reflection waveguides (BRW) is routinely exploited for photon-pair generation in the telecommunication range. Contrary to many conventional PDC sources, BRWs offer possibilities to create spectrally broadband but nevertheless indistinguishable photon pairs in orthogonal polarizations that simultaneously incorporate high frequency entanglement. We explore the characteristics of co-propagating twin beams created in a type-II ridge BRW. Our PDC source is bright and efficient, serving as a benchmark of its performance and justifies its exploitation for further use in quantum photonics. We then examine the coalescence of the twin beams and investigate the effect of their inevitable multi-photon contributions on the observed photon bunching. Our results show that BRWs have a great potential for producing broadband indistinguishable photon pairs as well as multi-photon states.

Original language	English
Article number	125201
Pages (from-to)	1-9
Number of pages	9
Journal	Journal of Optics
Volume	17
Issue number	12
DOIs	https://doi.org/10.1088/2040-8978/17/12/125201
Publication status	Published - 8 Oct 2015

Keywords

Parametric downconversion
twin beams
two-photon quantum interference
Bragg-reflection waveguides

Access to Document

10.1088/2040-8978/17/12/125201

Hoefling_2015_JoO_Broadband_CC
© 2015 IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Final published version, 1.28 MBLicence: CC BY

Cite this

@article{955d5e7e35e54b63851ea299a30bbc58,

title = "Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide",

abstract = "Parametric downconversion (PDC) in semiconductor Bragg-reflection waveguides (BRW) is routinely exploited for photon-pair generation in the telecommunication range. Contrary to many conventional PDC sources, BRWs offer possibilities to create spectrally broadband but nevertheless indistinguishable photon pairs in orthogonal polarizations that simultaneously incorporate high frequency entanglement. We explore the characteristics of co-propagating twin beams created in a type-II ridge BRW. Our PDC source is bright and efficient, serving as a benchmark of its performance and justifies its exploitation for further use in quantum photonics. We then examine the coalescence of the twin beams and investigate the effect of their inevitable multi-photon contributions on the observed photon bunching. Our results show that BRWs have a great potential for producing broadband indistinguishable photon pairs as well as multi-photon states.",

keywords = "Parametric downconversion, twin beams, two-photon quantum interference, Bragg-reflection waveguides",

author = "T. G{\"u}nthner and B. Pressl and K. Laiho and J. Ge{\ss}ler and Sven H{\"o}fling and M. Kamp and C. Schneider and G. Weihs",

note = "This work was supported in part by the ERC, project EnSeNa (257531) and by the FWF through project no. I-2065-N27.",

year = "2015",

month = oct,

day = "8",

doi = "10.1088/2040-8978/17/12/125201",

language = "English",

volume = "17",

pages = "1--9",

journal = "Journal of Optics",

issn = "2040-8978",

publisher = "IOP Publishing Ltd.",

number = "12",

}

TY - JOUR

T1 - Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide

AU - Günthner, T.

AU - Pressl, B.

AU - Laiho, K.

AU - Geßler, J.

AU - Höfling, Sven

AU - Kamp, M.

AU - Schneider, C.

AU - Weihs, G.

N1 - This work was supported in part by the ERC, project EnSeNa (257531) and by the FWF through project no. I-2065-N27.

PY - 2015/10/8

Y1 - 2015/10/8

N2 - Parametric downconversion (PDC) in semiconductor Bragg-reflection waveguides (BRW) is routinely exploited for photon-pair generation in the telecommunication range. Contrary to many conventional PDC sources, BRWs offer possibilities to create spectrally broadband but nevertheless indistinguishable photon pairs in orthogonal polarizations that simultaneously incorporate high frequency entanglement. We explore the characteristics of co-propagating twin beams created in a type-II ridge BRW. Our PDC source is bright and efficient, serving as a benchmark of its performance and justifies its exploitation for further use in quantum photonics. We then examine the coalescence of the twin beams and investigate the effect of their inevitable multi-photon contributions on the observed photon bunching. Our results show that BRWs have a great potential for producing broadband indistinguishable photon pairs as well as multi-photon states.

AB - Parametric downconversion (PDC) in semiconductor Bragg-reflection waveguides (BRW) is routinely exploited for photon-pair generation in the telecommunication range. Contrary to many conventional PDC sources, BRWs offer possibilities to create spectrally broadband but nevertheless indistinguishable photon pairs in orthogonal polarizations that simultaneously incorporate high frequency entanglement. We explore the characteristics of co-propagating twin beams created in a type-II ridge BRW. Our PDC source is bright and efficient, serving as a benchmark of its performance and justifies its exploitation for further use in quantum photonics. We then examine the coalescence of the twin beams and investigate the effect of their inevitable multi-photon contributions on the observed photon bunching. Our results show that BRWs have a great potential for producing broadband indistinguishable photon pairs as well as multi-photon states.

KW - Parametric downconversion

KW - twin beams

KW - two-photon quantum interference

KW - Bragg-reflection waveguides

U2 - 10.1088/2040-8978/17/12/125201

DO - 10.1088/2040-8978/17/12/125201

M3 - Article

SN - 2040-8978

VL - 17

SP - 1

EP - 9

JO - Journal of Optics

JF - Journal of Optics

IS - 12

M1 - 125201

ER -

Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide

Abstract

Keywords

Access to Document

Fingerprint

Cite this