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Updated: Jun 27, 2026

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

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

Published on: May 30, 2014

Interferometric Imaging Using Shared Quantum Entanglement.

Matthew R Brown¹, Markus Allgaier¹, Valérian Thiel²

¹Department of Physics and Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA.

Physical Review Letters

|December 10, 2023

Summary

This summary is machine-generated.

Quantum entanglement enables higher resolution imaging by using entangled fields as a phase reference. This interferometric technique can determine the spatial distribution of light sources.

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Area of Science:

Quantum optics
Optical interferometry
Quantum imaging

Background:

Very-long-baseline interferometry (VLBI) in astronomy and geodesy benefits from increased resolution.
Extending the spatial separation of optical collection apertures is key to improving resolution.
Quantum entanglement offers novel approaches to optical measurement challenges.

Purpose of the Study:

To demonstrate a tabletop quantum entanglement-based interferometric imaging technique.
To utilize entangled fields as a phase reference between separated apertures.
To determine the spatial distribution of a simulated thermal light source.

Main Methods:

Employed a tabletop experimental setup.
Utilized two entangled field modes as a phase reference.
Interfered light collected at each aperture with one entangled field.
Performed joint measurements for spatial distribution determination.

Main Results:

Successfully implemented an entanglement-based interferometric imaging technique.
Demonstrated the ability to determine the spatial distribution of a simulated thermal light source.
Showcased the utility of quantum entanglement in interferometry.

Conclusions:

Quantum entanglement can be effectively used to implement interferometric imaging.
This technique promises significantly increased resolution for applications like astronomy and geodesy.
Entanglement-based phase referencing offers a novel pathway for advanced optical imaging.