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

You might also read

Related Articles

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

Sort by
Same author

Synergistically engineered porous wheat starch via sodium trimetaphosphate-sodium hypochlorite dual modification: Microstructural revelations and enhanced functional performance.

Food chemistry·2026
Same author

Respiratory-responsive active elimination of microbe and pesticide residue on fruits.

Food chemistry·2026
Same author

Molecular mechanism of interaction between mannoprotein and proanthocyanidin.

Food chemistry·2026
Same author

Quantum-elevated chiral discrimination for biomolecules.

Science advances·2026
Same author

[Pediatric Ewing sarcoma in the rare sites: a clinicopathological analysis of eight cases].

Zhonghua bing li xue za zhi = Chinese journal of pathology·2026
Same author

Efficient Preservation of Perishable Fruits by Erasable Metal-Organic Frameworks.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026

Related Experiment Video

Updated: Oct 4, 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

8.5K

SU(2)-in-SU(1,1) Nested Interferometer for High Sensitivity, Loss-Tolerant Quantum Metrology.

Wei Du1,2, Jia Kong3, Guzhi Bao1

  • 1School of Physics and Astronomy, Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China.

Physical Review Letters
|February 4, 2022
PubMed
Summary

We developed a novel nested interferometer (SISNI) that enhances signal-to-noise ratio and surpasses the standard quantum limit, even with photon loss. This quantum-enhanced interferometry offers improved sensitivity for applications like gravitational wave detection.

More Related Videos

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.5K
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

14.7K

Related Experiment Videos

Last Updated: Oct 4, 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

8.5K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.5K
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

14.7K

Area of Science:

  • Quantum optics
  • Interferometry
  • Quantum sensing

Background:

  • Standard quantum limit (SQL) restricts interferometer sensitivity.
  • Photon loss in detectors degrades interferometer performance.
  • SU(1,1) interferometers offer enhanced sensitivity but are susceptible to losses.

Purpose of the Study:

  • To introduce a novel nested interferometer topology (SISNI).
  • To achieve high signal-to-noise ratio (SNR) and sensitivity beyond SQL.
  • To demonstrate tolerance to photon losses for practical applications.

Main Methods:

  • Nesting a SU(2) interferometer within a SU(1,1) interferometer.
  • Implementing SU(1,1) with parametric amplifiers via four-wave mixing (FWM) in Rb vapor.
  • Utilizing a laser-fed Mach-Zehnder SU(2) interferometer.

Main Results:

  • Achieved 2.2 dB sensitivity beyond SQL.
  • Demonstrated high SNR at power levels two orders of magnitude higher than previous loss-tolerant interferometers.
  • Experimentally determined optimal FWM gains, agreeing with quantum noise models.

Conclusions:

  • The SISNI topology offers simultaneous high SNR, sub-SQL sensitivity, and loss tolerance.
  • This approach can enhance the practical sensitivity of high-power interferometers, such as those for gravitational wave detection.
  • Enables quantum-enhanced interferometry at wavelengths lacking efficient detectors.