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Determination of Crystal Structures

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

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Updated: Jun 30, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

All-optical dissipative discrete time crystals.

Hossein Taheri¹, Andrey B Matsko², Lute Maleki³

¹Department of Electrical and Computer Engineering, University of California at Riverside, 3401 Watkins Drive, Riverside, CA, 92521, USA. hossein.taheri@ucr.edu.

Nature Communications

|February 15, 2022

Summary

This summary is machine-generated.

Researchers experimentally observed discrete time crystals (DTCs) in a novel optical microcavity. This breakthrough offers a promising platform for developing robust quantum computing technologies.

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Last Updated: Jun 30, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Published on: November 30, 2012

Quasi-light Storage for Optical Data Packets

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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

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Published on: December 15, 2021

Area of Science:

Quantum Many-Body Physics
Nonlinear Optics
Condensed Matter Physics

Background:

Time crystals exhibit spontaneous symmetry breaking in driven quantum systems.
Discrete time crystals (DTCs) possess temporal order and coherence, valuable for quantum technologies.
Experimental realization of DTCs remains challenging, limiting exploration.

Purpose of the Study:

To experimentally observe and theoretically investigate discrete time crystals (DTCs).
To explore novel phenomena like defect-carrying DTCs and phase transitions.
To develop a practical, room-temperature platform for chip-scale time crystals.

Main Methods:

Utilizing a Kerr-nonlinear optical microcavity.
Employing self-injection locking of two independent lasers to cavity modes.
Leveraging a dissipative Kerr soliton for platform versatility.

Main Results:

Successful experimental observation of discrete time crystals (DTCs).
Demonstration of a versatile platform enabling defect-carrying DTCs and phase transitions.
Development of a monolithic, room-temperature system.

Conclusions:

The optical microcavity platform provides a robust method for realizing DTCs.
This system facilitates the study of unexplored DTC behaviors and phase transitions.
The chip-scale, room-temperature approach enables practical applications in quantum information processing.