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Related Experiment Video

Updated: Feb 14, 2026

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Turbulence-Free Double-slit Interferometer.

Thomas A Smith¹, Yanhua Shih¹

¹Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA.

Physical Review Letters

|February 27, 2018

Summary

This summary is machine-generated.

A novel two-photon interference mechanism creates a turbulence-free interferometer, making optical observations immune to atmospheric distortions. This breakthrough enhances stability for sensitive applications like gravitational-wave detection.

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Last Updated: Feb 14, 2026

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Area of Science:

Quantum optics
Interferometry
Gravitational-wave detection

Background:

Optical turbulence significantly degrades the performance of interferometers used in astronomical and scientific observations.
Atmospheric turbulence causes variations in refractive index, path length, and phase, leading to blurred interference patterns and reduced visibility.

Purpose of the Study:

To demonstrate a theoretical and experimental basis for a turbulence-free interferometer.
To investigate the application of two-photon interference principles for overcoming atmospheric distortions in optical measurements.

Main Methods:

Utilized a two-photon interference experiment based on Einstein's granularity of light.
Designed and implemented a double-slit interferometer configuration insensitive to environmental fluctuations.

Main Results:

Successfully demonstrated two-photon double-slit interference that is unaffected by atmospheric turbulence.
Showcased a mechanism where variations in optical path do not impact the interference pattern.

Conclusions:

The developed two-photon interference mechanism provides a robust method for turbulence-free interferometry.
This turbulence-free interferometer offers enhanced sensitivity and stability, crucial for advanced optical observations, including gravitational-wave detection.