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

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Published on: September 5, 2019

Solitons in Arbitrary Dimensions Stabilized by Photon-Mediated Interactions.

Haoqing Zhang^1,2, Anjun Chu^1,2, Chengyi Luo¹

¹University of Colorado, JILA, NIST and Department of Physics, Boulder, Colorado 80309, USA.

Physical Review Letters

|November 7, 2025

Summary

We present a novel method to create solitons in matter-wave interferometers without requiring quantum degeneracy. This technique uses engineered interactions to balance dispersion, enabling stable, bound wave packets for detection in thermal gases.

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Area of Science:

Quantum physics
Atomic, molecular, and optical physics
Condensed matter physics

Background:

Solitons are self-reinforcing wave packets that maintain their shape.
Generating solitons typically requires quantum degenerate Bose-Einstein condensates.
Matter-wave interferometers are sensitive tools for probing quantum phenomena.

Purpose of the Study:

To propose a new scheme for generating solitons in arbitrary dimensions.
To avoid the requirement of quantum degeneracy for soliton formation.
To develop a detection method suitable for thermal gases.

Main Methods:

Balancing single-particle dispersion with cavity-mediated exchange interactions.
Engineering interactions between two wave packets to achieve bound states.
Utilizing an interferometric probing scheme for detection.

Main Results:

Solitons emerge from the engineered balance of dispersion and interactions.
Wave packets remain bound and dispersion-free under specific conditions.
The proposed detection scheme is suitable for thermal gases.

Conclusions:

The proposed scheme offers a pathway to generate solitons without quantum degeneracy.
Cavity-mediated interactions provide a versatile tool for controlling wave packet dynamics.
Interferometric probing presents a viable alternative to time-of-flight imaging for soliton detection.