A Pure and indistinguishable single-photon source at telecommunication
wavelength
- URL: http://arxiv.org/abs/2201.02465v1
- Date: Fri, 7 Jan 2022 14:25:06 GMT
- Title: A Pure and indistinguishable single-photon source at telecommunication
wavelength
- Authors: Beatrice Da Lio, Carlos Faurby, Xiaoyan Zhou, Ming Lai Chan, Ravitej
Uppu, Henri Thyrrestrup, Sven Scholz, Andreas D. Wieck, Arne Ludwig, Peter
Lodahl, Leonardo Midolo
- Abstract summary: 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.
- Score: 0.7550017472513711
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: On-demand single-photon sources emitting pure and indistinguishable photons
at the telecommunication wavelength are a critical asset towards the deployment
of fiber-based quantum networks. Indeed, single photons may serve as flying
qubits, allowing communication of quantum information over long distances.
Self-assembled InAs quantum dots embedded in GaAs constitute an excellent
nearly deterministic source of high quality single photons, but the vast
majority of sources operate in the 900-950 nm wavelength range, precluding
their adoption in a quantum network. Here, we present a quantum frequency
conversion scheme for converting single photons from quantum dots to the
telecommunication C band, around 1550 nm, achieving 40.8% end-to-end
efficiency, while maintaining both high purity and a high degree of
indistinguishability during conversion with measured values of
$g^{(2)}(0)=2.4\%$ and $V^{\text{corr}}=94.8\%$, respectively.
Related papers
- Ultrabright-entanglement-based quantum key distribution over a 404-km-long optical fiber [12.197914166060688]
This work has achieved a directly measured power of 17.9 nW in entangled photon generation with a 3.2 mW pump power.
Results demonstrate the potential of wavelength-multiplexed polarization-entangled photon sources for high-speed, long-distance quantum communication.
arXiv Detail & Related papers (2024-08-08T10:48:08Z) - 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) - High-rate sub-GHz linewidth bichromatic entanglement source for quantum
networking [59.191830955730346]
In this work, we study an entanglement source based on four-wave mixing in a diamond configuration in a warm rubidium vapor.
We are able to achieve in-fiber entangled pair generation rates greater than $107, /s$, orders of magnitude higher than previously reported atomic sources.
arXiv Detail & Related papers (2023-04-11T21:19:30Z) - High-throughput quantum photonic devices emitting indistinguishable photons in the telecom C-band [28.279056210896716]
Single indistinguishable photons at telecom C-band wavelengths are essential for quantum networks and the future quantum internet.
We demonstrate the high- throughput fabrication of quantum-photonic integrated devices operating at C-band wavelengths based on epitaxial semiconductor quantum dots.
Further improvements in yield and coherence properties will pave the way for implementing single-photon non-linear devices and advanced quantum networks at telecom wavelengths.
arXiv Detail & Related papers (2023-04-05T15:39:22Z) - QUICK$^3$ -- Design of a satellite-based quantum light source for
quantum communication and extended physical theory tests in space [73.86330563258117]
Single photon source can enhance secure data rates in satellite-based quantum key distribution scenarios.
payload is being integrated into a 3U CubeSat and scheduled for launch in 2024 into low Earth orbit.
arXiv Detail & Related papers (2023-01-26T15:34:11Z) - High-quality multi-wavelength quantum light sources on silicon nitride
micro-ring chip [5.517255247747876]
Multi-wavelength quantum light sources, especially at telecom band, are extremely desired in quantum information technology.
Here we demonstrate a multiwavelength quantum light source using a silicon nitride micro-ring with a free spectral range of 200 GHz.
The generation of eight pairs of correlated photons is ensured in a wavelength range of 25.6 nm.
arXiv Detail & Related papers (2022-09-23T05:32:10Z) - High quality entanglement distribution through telecommunication fiber
using near-infrared non-degenerate photon pairs [73.4643018649031]
In urban environments, the quantum channel in the form of telecommunication optical fiber (confirming to ITU G.652D standards) are available.
We investigate the possibility that for campus-type communications, entangled photons prepared in the Near-Infrared Range (NIR) can be transmitted successfully.
arXiv Detail & Related papers (2022-09-09T03:23:11Z) - A Bright Source of Telecom Single Photons Based on Quantum Frequency
Conversion [44.31954732613996]
Single photon sources are essential for quantum networking and communication.
Semiconductor quantum dots are among the most promising candidates, but their typical emission wavelength renders them unsuitable for use in fibre networks.
Here, we present quantum frequency conversion of near-infrared photons from a bright quantum dot to the telecommunication C-band.
arXiv Detail & Related papers (2021-01-27T19:02:14Z) - Stable Polarization Entanglement based Quantum Key Distribution over
Metropolitan Fibre Network [55.41644538483948]
We demonstrate a quantum key distribution implementation over deployed dark telecom fibers with polarisation-entangled photons generated at the O-band.
One of the photons in the pairs are propagated through 10km of deployed fiber while the others are detected locally.
This ensures continuous and stable QKD operation with an average QBER of 6.4% and a final key rate of 109 bits/s.
arXiv Detail & Related papers (2020-07-04T02:36:57Z) - 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)
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.