On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices

• URL: http://arxiv.org/abs/2306.08668v2
• Date: Tue, 16 Jan 2024 17:23:14 GMT
• Title: On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices
• Authors: Daniel A. Vajner, Pawe{\l} Holewa, Emilia Zi\k{e}ba-Ost\'oj, Maja Wasiluk, Martin von Helversen, Aurimas Sakanas, Alexander Huck, Kresten Yvind, Niels Gregersen, Anna Musia{\l}, Marcin Syperek, Elizaveta Semenova, Tobias Heindel
• Abstract summary: 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.
• Score: 31.114245664719455
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Semiconductor quantum dots (QDs) enable the generation of single and entangled photons, useful for various applications in photonic quantum technologies. Specifically for quantum communication via fiber-optical networks, operation in the telecom C-band centered around 1550$\,$nm is ideal. The direct generation of QD-photons in this spectral range and with high quantum-optical quality, however, remained challenging. Here, we demonstrate the coherent on-demand generation of indistinguishable photons in the telecom C-band from single QD devices consisting of InAs/InP QD-mesa structures heterogeneously integrated with a metallic reflector on a silicon wafer. Using pulsed two-photon resonant excitation of the biexciton-exciton radiative cascade, we observe Rabi rotations up to pulse areas of $4\pi$ and a high single-photon purity in terms of $g^{(2)}(0)=0.005(1)$ and $0.015(1)$ for exciton and biexciton photons, respectively. Applying two independent experimental methods, based on fitting Rabi rotations in the emission intensity and performing photon cross-correlation measurements, we consistently obtain preparation fidelities at the $\pi$-pulse exceeding 80$\%$. Finally, performing Hong-Ou-Mandel-type two-photon interference experiments we obtain a photon-indistinguishability of the full photon wave packet of up to $35(3)\%$, representing a significant advancement in the photon-indistinguishability of single photons emitted directly in the telecom C-band.

Related papers

• All-optical modulation with single-photons using electron avalanche [69.65384453064829]
  We demonstrate all-optical modulation using a beam with single-photon intensity. Our approach opens up the possibility of terahertz-speed optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Highly indistinguishable single photons from droplet-etched GaAs quantum dots integrated in single-mode waveguides and beamsplitters [0.0]
  GaAs quantum dots (QDs) obtained by droplet etching epitaxy show excellent performances with visibilities close to one for both individual and remote emitters. We show the first implementation in this direction, realizing the key passive elements needed in photonic integrated circuits (PICs) We study both the statistical distribution of wavelength, linewidth and decay times of the excitonic line of multiple QDs, as well as the quantum optical properties of individual emitters under resonant excitation.
  arXiv  Detail & Related papers  (2023-10-18T11:34:11Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• 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)
• Quantum-limited millimeter wave to optical transduction [50.663540427505616]
  Long distance transmission of quantum information is a central ingredient of distributed quantum information processors. Current approaches to transduction employ solid state links between electrical and optical domains. We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
  arXiv  Detail & Related papers  (2022-07-20T18:04:26Z)
• 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)
• In-plane resonant excitation of quantum dots in a dual-mode photonic-crystal waveguide with high $\beta$-factor [0.4588028371034407]
  A high-quality quantum dot (QD) single-photon source is a key resource for quantum information processing. We propose a novel dual-mode photonic-crystal waveguide that realizes direct in-plane resonant excitation of the embedded QDs. The device has a compact footprint of $sim 50$ $mu$m$2$ and would enable stable and scalable excitation of multiple emitters for multi-photon quantum applications.
  arXiv  Detail & Related papers  (2021-12-01T13:46:13Z)
• Maximally entangled and GHz-clocked on-demand photon pair source [1.8428167155752175]
  We present a 1 GHz-clocked, maximally entangled and on-demand photon pair source based on droplet etched GaAs quantum dots using two-photon excitation.
  arXiv  Detail & Related papers  (2020-10-22T15:54:35Z)
• Engineering telecom single-photon emitters in silicon for scalable quantum photonics [0.0]
  We create and isolate single-photon emitters with a high brightness approaching $105$ counts per second in commercial silicon-on-insulator (SOI) wafers. Our results provide a route towards the implementation of quantum processors, repeaters and sensors compatible with the present-day silicon technology.
  arXiv  Detail & Related papers  (2020-08-21T11:34:38Z)
• Near-ideal spontaneous photon sources in silicon quantum photonics [55.41644538483948]
  Integrated photonics is a robust platform for quantum information processing. Sources of single photons that are highly indistinguishable and pure, that are either near-deterministic or heralded with high efficiency, have been elusive. Here, we demonstrate on-chip photon sources that simultaneously meet each of these requirements.
  arXiv  Detail & Related papers  (2020-05-19T16:46:44Z)
• On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source [0.0]
  A deterministic source of coherent single photons is an enabling device of quantum-information processing. We present a novel nanophotonic device that enables deterministic pulsed excitation of QDs through the waveguide. We demonstrate a coherent single-photon source that simultaneously achieves high-purity.
  arXiv  Detail & Related papers  (2020-01-29T08:09:53Z)

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.