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 Concept Videos

The de Broglie Wavelength02:32

The de Broglie Wavelength

31.5K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
31.5K
Quantum Numbers02:43

Quantum Numbers

46.8K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
46.8K

You might also read

Related Articles

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

Sort by
Same author

Experimental observation of counter-intuitive features of photonic bunching.

Light, science & applications·2026
Same author

Quantum hypergraph states: a review.

Reports on progress in physics. Physical Society (Great Britain)·2026
Same author

Multiparameter quantum-enhanced adaptive metrology with squeezed light.

Nature communications·2026
Same author

Randomness certification in a quantum network with independent sources.

Science advances·2026
Same author

Quantum reservoir computing for photonic entanglement witnessing.

Science advances·2025
Same author

Quantum teleportation with dissimilar quantum dots over a hybrid quantum network.

Nature communications·2025

Related Experiment Video

Updated: Nov 12, 2025

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

9.4K

Quantum key distribution with entangled photons generated on demand by a quantum dot.

Francesco Basso Basset1, Mauro Valeri1, Emanuele Roccia1

  • 1Department of Physics, Sapienza University of Rome, 00185 Rome, Italy.

Science Advances
|March 20, 2021
PubMed
Summary

Semiconductor quantum dots enable secure quantum key distribution (QKD) by generating high-fidelity entangled photons on-demand. This breakthrough paves the way for real-world quantum communication networks beyond laboratory settings.

More Related Videos

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.8K
Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

9.4K

Related Experiment Videos

Last Updated: Nov 12, 2025

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

9.4K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.8K
Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

9.4K

Area of Science:

  • Quantum Information Science
  • Quantum Communication
  • Solid-State Physics

Background:

  • Quantum key distribution (QKD) is fundamental for secure quantum networks.
  • Entanglement-based QKD offers enhanced security and scalability but requires advanced photon sources.
  • Semiconductor quantum emitters present a viable solution for on-demand, high-fidelity entangled photon generation.

Purpose of the Study:

  • To demonstrate a modified Ekert quantum key distribution protocol using a semiconductor quantum dot.
  • To test the protocol's feasibility in realistic communication channels, including fiber and free space.
  • To highlight the readiness of quantum-dot technology for practical quantum communication.

Main Methods:

  • Utilized a coherently driven quantum dot as a source of entangled photons.
  • Implemented a modified Ekert QKD protocol.
  • Conducted experiments over a 250-m single-mode fiber and through free space between two campus buildings.

Main Results:

  • Successfully demonstrated QKD using entangled photons from a quantum dot.
  • Validated the performance of the quantum-dot source in both fiber and free-space channels.
  • Showcased low multiphoton emission, enhancing security against eavesdropping.

Conclusions:

  • Quantum-dot entangled photon sources are mature for real-world quantum communication applications.
  • The study validates the practical implementation of entanglement-based QKD outside of controlled laboratory environments.
  • This work advances the deployment of secure quantum networks using scalable semiconductor technology.