Purcell-Enhanced Single Photons at Telecom Wavelengths from a Quantum Dot in a Photonic Crystal Cavity

• URL: http://arxiv.org/abs/2310.19701v1
• Date: Mon, 30 Oct 2023 16:23:06 GMT
• Title: Purcell-Enhanced Single Photons at Telecom Wavelengths from a Quantum Dot in a Photonic Crystal Cavity
• Authors: Catherine L. Phillips, Alistair J. Brash, Max Godsland, Nicholas J. Martin, Andrew Foster, Anna Tomlinson, Rene Dost, Nasser Babazadeh, Elisa M. Sala, Luke Wilson, Jon Heffernan, Maurice S. Skolnick, A. Mark Fox
• Abstract summary: Quantum dots are promising candidates for telecom single photon sources due to their tunable emission across different low-loss telecommunications bands. Our work focuses on InAs/InP QDs created via droplet epitaxy MOVPE to operate within the telecoms C-band. We observe a short radiative lifetime of 340 ps, arising from a Purcell factor of 5, owing to interaction of the QD within a low-mode-volume photonic crystal cavity.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum dots are promising candidates for telecom single photon sources due to their tunable emission across the different low-loss telecommunications bands, making them compatible with existing fiber networks. Their suitability for integration into photonic structures allows for enhanced brightness through the Purcell effect, supporting efficient quantum communication technologies. Our work focuses on InAs/InP QDs created via droplet epitaxy MOVPE to operate within the telecoms C-band. We observe a short radiative lifetime of 340 ps, arising from a Purcell factor of 5, owing to interaction of the QD within a low-mode-volume photonic crystal cavity. Through in-situ control of the sample temperature, we show both temperature tuning of the QD's emission wavelength and a preserved single photon emission purity at temperatures up to 25K. These findings suggest the viability of QD-based, cryogen-free, C-band single photon sources, supporting applicability in quantum communication technologies.

Related papers

• 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)
• On-demand single photon emission in the telecom C-band from nanowire-based quantum dots [0.5055815271772576]
  We demonstrate single photon emission from position-controlled nanowire quantum dots at lambda > 1530 nm. Results are an important step towards the scalable manufacture of high efficiency, high rate single photon emitters in the telecom C-band.
  arXiv  Detail & Related papers  (2023-09-23T14:03:39Z)
• On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices [31.114245664719455]
  We demonstrate the coherent on-demand generation of in photons in the telecom C-band from single QD devices. The research represents a significant advancement in photon-indistinguishability of single photons emitted directly in the telecom C-band.
  arXiv  Detail & Related papers  (2023-06-14T17:59:03Z)
• Photophysics of Intrinsic Single-Photon Emitters in Silicon Nitride at Low Temperatures [97.5153823429076]
  A robust process for fabricating intrinsic single-photon emitters in silicon nitride has been recently established. These emitters show promise for quantum applications due to room-temperature operation and monolithic integration with the technologically mature silicon nitride photonics platform.
  arXiv  Detail & Related papers  (2023-01-25T19:53:56Z)
• Purcell enhancement of single-photon emitters in silicon [68.8204255655161]
  Individual spins that are coupled to telecommunication photons offer unique promise for distributed quantum information processing. We implement such an interface by integrating erbium dopants into a nanophotonic silicon resonator. We observe optical Rabi oscillations and single-photon emission with a 78-fold Purcell enhancement.
  arXiv  Detail & Related papers  (2023-01-18T19:38:38Z)
• 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)
• High emission rate from a Purcell-enhanced, triggered source of pure single photons in the telecom C-band [0.0]
  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.
  arXiv  Detail & Related papers  (2022-07-26T13:46:39Z)
• High-efficiency microwave-optical quantum transduction based on a cavity electro-optic superconducting system with long coherence time [52.77024349608834]
  Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors. We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities. We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
  arXiv  Detail & Related papers  (2022-06-30T17:57:37Z)
• 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)
• 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)
• Deterministically fabricated strain-tunable quantum dot single-photon sources emitting in the telecom O-band [0.0]
  We present a spectrally tunable single-photon source emitting in the telecom O-band with the potential to function as a building block of a quantum communication network. A thin membrane of GaAs embedding InGaAs quantum dots (QDs) is attached onto a piezoelectric actuator via gold thermocompression bonding.
  arXiv  Detail & Related papers  (2020-09-26T09:03:50Z)

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.