High emission rate from a Purcell-enhanced, triggered source of pure single photons in the telecom C-band

• URL: http://arxiv.org/abs/2207.12898v1
• Date: Tue, 26 Jul 2022 13:46:39 GMT
• Title: High emission rate from a Purcell-enhanced, triggered source of pure single photons in the telecom C-band
• Authors: Cornelius Nawrath, Raphael Joos, Sascha Kolatschek, Stephanie Bauer, Pascal Pruy, Florian Hornung, Julius Fischer, Jiasheng Huang, Ponraj Vijayan, Robert Sittig, Michael Jetter, Simone Luca Portalupi, Peter Michler
• Abstract summary: We present an InAs/InGaAs/GaAs quantum dot emitting in the telecom C-band coupled to a circular Bragg grating. The Purcell enhancement of the emission enables a simultaneously high brightness with a fiber-coupled single-photon count rate of 13.9MHz.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Several emission features mark semiconductor quantum dots as promising non-classical light sources for prospective quantum implementations. For long-distance transmission [1] and Si-based on-chip processing[2, 3], the possibility to match the telecom C-band [4] stands out, while source brightness and high single-photon purity are key features in virtually any quantum implementation [5, 6]. Here we present an InAs/InGaAs/GaAs quantum dot emitting in the telecom C-band coupled to a circular Bragg grating. The Purcell enhancement of the emission enables a simultaneously high brightness with a fiber-coupled single-photon count rate of 13.9MHz for an excitation repetition rate of 228MHz (first-lens collection efficiency ca. 17% for NA = 0.6), while maintaining a low multi-photon contribution of g(2)(0) = 0.0052. Moreover, the compatibility with temperatures of up to 40K attainable with compact cryo coolers, further underlines the suitability for out-of-the-lab implementations.

Related papers

• Purcell-enhanced single-photon emission from InAs/GaAs quantum dots coupled to broadband cylindrical nanocavities [0.0]
  In this study, we demonstrate up to a 38-fold enhancement in the emission rate of InAs QDs by coupling them to metal-clad GaAs nanopillars. These cavities, featuring a sub-wavelength mode volume of 4.5x10-4 (lambda/n)3 and quality factor of 62, enable Purcell-enhanced single-photon emission across a large bandwidth of 15 nm.
  arXiv  Detail & Related papers  (2024-07-16T12:06:30Z)
• Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
  Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
  arXiv  Detail & Related papers  (2024-05-03T23:02:30Z)
• Polarized and bright telecom C-band single-photon source from InP-based quantum dots coupled to elliptical Bragg gratings [0.0]
  We demonstrate a bright and polarized single-photon source operating in the telecom C-band based on an elliptical Bragg grating (EBG) cavity. The device achieves a polarization ratio of 0.986, single-photon purity of g2 (0)78$pm$0.016 and single-polarized photon collection efficiency of 24% at the first lens.
  arXiv  Detail & Related papers  (2024-01-25T13:02:39Z)
• Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide [0.0]
  We demonstrate a nanophotonic waveguide platform with embedded quantum dots (QDs) The design uses slow-light effects in a glide-plane photonic crystal waveguide with QD tuning to match the emission frequency to the slow-light region. We then demonstrate a 5 fold Purcell enhancement for a dot with high degree of chiral coupling to waveguide modes.
  arXiv  Detail & Related papers  (2022-08-12T18:42:16Z)
• Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power [51.961447341691]
  Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber.
  arXiv  Detail & Related papers  (2022-08-10T09:04:15Z)
• Silicon nitride waveguides with intrinsic single-photon emitters for integrated quantum photonics [97.5153823429076]
  We show the first successful coupling of photons from intrinsic single-photon emitters in SiN to monolithically integrated waveguides made of the same material. Results pave the way toward the realization of scalable, technology-ready quantum photonic integrated circuitry.
  arXiv  Detail & Related papers  (2022-05-17T16:51:29Z)
• Single quantum emitters with spin ground states based on Cl bound excitons in ZnSe [55.41644538483948]
  We show a new type of single photon emitter with potential electron spin qubit based on Cl impurities inSe. Results suggest single Cl impurities are suitable as single photon source with potential photonic interface.
  arXiv  Detail & Related papers  (2022-03-11T04:29:21Z)
• A Pure and indistinguishable single-photon source at telecommunication wavelength [0.7550017472513711]
  InAs quantum dots embedded in GaAs constitute an excellent nearly deterministic source of high quality single photons. We present a quantum frequency conversion scheme for converting single photons from quantum dots to the telecommunication C band, around 1550 nm.
  arXiv  Detail & Related papers  (2022-01-07T14:25:06Z)
• Bright Purcell enhanced single-photon source in the telecom O-band based on a quantum dot in a circular Bragg grating [0.0]
  Combination of semiconductor quantum dots (QDs) with photonic cavities is a promising way to realize non-classical light sources. In the present work we demonstrate the coupling of an InGaAs/GaAs QDs emitting in the telecom O-band to a circular Bragg grating cavity.
  arXiv  Detail & Related papers  (2021-07-07T15:50:46Z)
• Room temperature single-photon emitters in silicon nitride [97.75917079876487]
  We report on the first-time observation of room-temperature single-photon emitters in silicon nitride (SiN) films grown on silicon dioxide substrates. As SiN has recently emerged as one of the most promising materials for integrated quantum photonics, the proposed platform is suitable for scalable fabrication of quantum on-chip devices.
  arXiv  Detail & Related papers  (2021-04-16T14:20:11Z)
• Coherent and Purcell-enhanced emission from erbium dopants in a cryogenic high-Q resonator [68.8204255655161]
  A 19 micrometer thin erbium-doped crystal is integrated into a cryogenic Fabry-Perot resonator with a quality factor of nine million. Our system enables coherent and efficient nodes for long-distance quantum networks.
  arXiv  Detail & Related papers  (2020-06-25T07:53:16Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.