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

Group Polarization01:01

Group Polarization

35.6K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
35.6K

You might also read

Related Articles

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

Sort by
Same author

Brightness Enhancement of Room-Temperature Telecom Single-Photon Emitters in GaN.

ACS applied materials & interfaces·2026
Same author

Mechanisms of Gualou Beimu Yin in suppressing the development and metastasis of triple-negative breast cancer: an integrated study based on network pharmacology, transcriptomics, and metabolomics.

Journal of traditional Chinese medicine = Chung i tsa chih ying wen pan·2026
Same author

Transport and deposition of inhalable aerosol drug particles in the human respiratory tract: variations across lung zones and the impact of breath-holding.

Journal of biomechanics·2025
Same author

Towards fully passive time-bin quantum key distribution over moving free-space channels.

Optics express·2025
Same author

All-fibred, telecom technology compatible, room temperature single-photon source.

Optics express·2025
Same author

Sample Size Estimation: Ten Frequently Unanswered Questions.

Radiology·2025

Related Experiment Video

Updated: Sep 16, 2025

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

8.6K

Polarization-encoded quantum key distribution with a room-temperature telecom single-photon emitter.

Zhang Xingjian1, Zhang Haoran2, Rui Ming Chua1,3

  • 1Centre for Quantum Technologies, National University of Singapore, Singapore 117543, Singapore.

National Science Review
|July 10, 2025
PubMed
Summary

Researchers demonstrated room-temperature quantum key distribution (QKD) using a novel gallium nitride (GaN) defect single-photon source (SPS). This breakthrough overcomes previous limitations, paving the way for practical quantum communication networks.

Keywords:
polarizationpolarization mode dispersionquantum key distributionsingle-photon source

More Related Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.6K
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

9.1K

Related Experiment Videos

Last Updated: Sep 16, 2025

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

8.6K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.6K
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

9.1K

Area of Science:

  • Quantum communication
  • Solid-state physics
  • Photonics

Background:

  • Single-photon sources (SPSs) are crucial for quantum key distribution (QKD) but often require cryogenic cooling or frequency conversion.
  • Existing QKD systems face limitations in practical deployment due to operational complexity and fiber transmission challenges.

Purpose of the Study:

  • To demonstrate polarization-encoded QKD using a room-temperature SPS based on a gallium nitride (GaN) defect.
  • To assess the performance of this novel SPS in real-world fiber optic conditions.

Main Methods:

  • Utilized a gallium nitride (GaN) defect as a room-temperature single-photon source (SPS).
  • Conducted field tests of polarization-encoded quantum key distribution (QKD) over deployed optical fibers of varying lengths and losses.
  • Measured quantum bit error rate (QBER) and secure key rates.

Main Results:

  • Achieved a secure key rate of 585.9 bps with a 5.0% QBER over 3.5 km of fiber (4.0 dB loss).
  • Demonstrated a secure key rate of 50.4 bps with a 3.2% QBER over 32.5 km of fiber (11.2 dB loss).
  • Observed improved performance with lower polarization mode dispersion in longer fiber spools.

Conclusions:

  • Gallium nitride (GaN) defects show significant potential as room-temperature single-photon sources for practical quantum communication.
  • The developed system offers a viable alternative to cryogenic or frequency-converted SPSs for QKD.
  • Further research can optimize GaN defect SPSs for enhanced QKD performance and scalability.