Audio / Video

Discrete Time Crystals

  • 01:09:23

Description

Non-equilibrium systems can exhibit phenomena fundamentally richer than their static counterparts. Indeed, certain phases of matter that are provably forbidden in equilibrium, such as quantum time crystals, have found new life in out-of-equilibrium systems. In this talk, I will describe recent advances, which predict the spontaneous breaking of time translation symmetry in periodically driven quantum systems. The resulting discrete time crystal exhibits collective oscillations — arising from a combination of many-body synchronization and localization — that are quantized to an integer multiple of the drive period. I will describe a simple model for a one dimensional discrete time crystal, which explicitly reveals the rigidity of the emergent oscillations as the drive is varied. Recent experimental realizations of discrete time crystalline order in long-range interacting trapped ions and solid-state spins will be discussed.

Details

Title

Discrete Time Crystals

Creator

University of California, Berkeley. Dept. of Physics

Published

Berkeley, CA, University of California, Berkeley, Dept. of Physics, April 3, 2017

Full Collection Name

Physics Colloquia

Type

Video

Format

Lecture.

Extent

1 streaming video file

Other Physical Details

digital, sd., col.

Archive

Physics Library

Note

Recorded at a colloquium held on April 3, 2017, sponsored by the Dept. of Physics, University of California, Berkeley.

originally produced as an .mts file in 2017

Speakers: Norman Yao.

Collection

Physics Colloquia

Tracks

colloquia/4-3-17Yao.mp4 01:09:23

Linked Resources

View record in Digital Collections.