Efficient, indistinguishable telecom C-band photons using a tapered nanobeam
arXiv:2404.01562 · doi:10.1021/acsphotonics.4c00625
Abstract
Telecom C-band single photons exhibit the lowest attenuation in optical fibers, enabling long-haul quantum-secured communication. However, efficient coupling with optical fibers is crucial for these single photons to be effective carriers in long-distance transmission. In this work, we demonstrate an efficient fiber-coupled single photon source at the telecom C-band using InAs/InP quantum dots coupled to a tapered nanobeam. The tapered nanobeam structure facilitates directional emission that is mode-matched to a lensed fiber, resulting in a collection efficiency of up to 65% from the nanobeam to a single-mode fiber. Using this approach, we demonstrate single photon count rates of 575 5 Kcps and a single photon purity of (0) = 0.015 0.003. Additionally, we demonstrate Hong-Ou Mandel interference from the emitted photons with a visibility of 0.84 0.06. From these measurements, we determine a photon coherence time of 450 20 ps, a factor of just 8.3 away from the lifetime limit. This work represents an important step towards the development of telecom C-band single-photon sources emitting bright, pure, and indistinguishable photons, which are necessary to realize fiber-based long-distance quantum networks
References in corpus (25)
- Entanglement-based wavelength multiplexed quantum communication network
- Hybrid integration of solid-state quantum emitters on a silicon photonic chip
- Highly indistinguishable on-demand resonance fluorescence photons from a deterministic quantum dot micropillar device with 75 extraction efficiency
- Two-photon interference using background-free quantum frequency conversion of single photons from a semiconductor quantum dot
- Semiconductor quantum dots as an ideal source of polarization entangled photon pairs on-demand: a review
- Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide
- Integration of Quantum Emitters with Lithium Niobate Photonics
- Hong-Ou-Mandel Interference with Imperfect Single Photon Sources
- Quantum teleportation using highly coherent emission from telecom C-band quantum dots
- Photophysics of novel diamond based single photon emitters
- Resonance fluorescence of GaAs quantum dots with near-unity photon indistinguishability
- Post-selective two-photon interference from a continuous non-classical stream of photons emitted by a quantum dot
- Quantum optics with near lifetime-limited quantum-dot transitions in a nanophotonic waveguide
- High-throughput quantum photonic devices emitting indistinguishable photons in the telecom C-band
- Measuring the photon coalescence time-window in the continuous-wave regime for resonantly driven semiconductor quantum dots
- Telecom wavelength single quantum dots with very small excitonic fine-structure splitting
- Bright Quantum Dot Single-Photon Emitters at Telecom Bands Heterogeneously Integrated on Si
- On-Demand Generation of Indistinguishable Photons in the Telecom C-Band using Quantum Dot Devices
- Cavity enhanced emission from a silicon T center
- A Bright Source of Telecom Single Photons Based on Quantum Frequency Conversion
- Two-photon interference from a quantum dot--microcavity: Persistent pure-dephasing and suppression of time-jitter
- InP-based single-photon sources operating at telecom C-band with increased extraction efficiency
- High-efficiency single photon emission from a silicon T-center in a nanobeam
- Large Stark Tuning of InAs/InP Quantum Dots
- Triggered telecom C-band single-photon source with high brightness, high indistinguishability and sub-GHz spectral linewidth