Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Jun 22, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.4K

High-rate intercity quantum key distribution with a semiconductor single-photon source.

Jingzhong Yang1, Zenghui Jiang1, Frederik Benthin1

  • 1Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, 30167, Hannover, Germany.

Light, Science & Applications
|July 2, 2024
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Trichotillomania: The interplay between emotional states, urges and hair pulling episodes.

Comprehensive psychiatry·2026
Same author

Asymmetric two-photon response of an incoherently driven quantum emitter.

Nature communications·2026
Same author

Effectiveness of the school-based internet intervention StresSOS for the prevention of mental health problems in young people: a randomized controlled trial as part of the ProHEAD consortium.

Journal of child psychology and psychiatry, and allied disciplines·2026
Same author

Time-bin encoded quantum key distribution over 120 km with a telecom quantum dot source.

Light, science & applications·2026
Same author

Development and evaluation of a web-based toolkit to inform mental health professionals about digital mental health interventions for eating disorders.

Journal of eating disorders·2026
Same author

Smartphone-supported Positive Adjustment Coping Intervention (PACI) for couples undergoing fertility treatment: A randomised controlled trial.

PloS one·2025
Same journal

Two-photon 3D imaging of optically stimulated neural activity at 100 Hz.

Light, science & applications·2026
Same journal

Quasi-bound states in the continuum driven photoresponse in multiple quantum wells for machine vision.

Light, science & applications·2026
Same journal

Spin-photon qubits for scalable quantum network.

Light, science & applications·2026
Same journal

Dual-mode switchable and reconfigurable Van der Waals phototransistor for multi-state image encryption.

Light, science & applications·2026
Same journal

Weak polarization electric field Ⅲ-N LEDs on polar plane with enhanced efficiency and strong lateral carrier confinement.

Light, science & applications·2026
Same journal

Bi-layer photonic random meta-composite for cryogenic thermal control by ultra-broadband scattering matched reflectance.

Light, science & applications·2026
See all related articles
This summary is machine-generated.

This study demonstrates the first intercity quantum key distribution (QKD) using semiconductor quantum dots. This breakthrough in secure communication achieved a record key rate over a 79 km fiber link.

Area of Science:

  • Quantum Information Science
  • Optoelectronics
  • Secure Communication

Background:

  • Quantum key distribution (QKD) offers information-theoretic security against eavesdropping.
  • On-demand quantum light sources are crucial for enhancing QKD security and performance.
  • Semiconductor quantum dots (QDs) are promising for quantum communications due to deterministic single-photon emission.

Purpose of the Study:

  • To report the first intercity QKD experiment utilizing a bright, deterministic single-photon source.
  • To evaluate the performance of semiconductor quantum dots in a real-world QKD network.
  • To establish new benchmarks for secure key generation over long fiber optic links.

Main Methods:

  • Implementation of a BB84 protocol with polarization encoding.

More Related Videos

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.0K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.6K

Related Experiment Videos

Last Updated: Jun 22, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.4K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.0K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.6K
  • Utilizing single photons from a semiconductor quantum dot in a circular Bragg grating structure.
  • Transmission over a 79 km intercity fiber link between Hannover and Braunschweig.

    • Main Results:

    • Demonstration of a record high secret key bits per pulse (4.8 × 10-5).
    • Achieved an average quantum bit error ratio of approximately 0.65%.
    • Determined an asymptotic maximum tolerable loss of 28.11 dB, equivalent to 144 km of standard fiber.

    Conclusions:

    • Deterministic semiconductor quantum dot sources are viable for state-of-the-art QKD.
    • These sources offer significant potential for improving QKD protocols, including measurement-device-independent and quantum repeater applications.
    • This work paves the way for practical, high-performance quantum communication networks.