# Time crystals in periodically driven systems

@article{Yao2018TimeCI, title={Time crystals in periodically driven systems}, author={Norman Y. Yao and C. Nayak}, journal={Physics Today}, year={2018} }

When the discrete time-translation symmetry of isolated, periodically driven systems is spontaneously broken, a new phase of matter can emerge.

## 37 Citations

An inexpensive crystal makes a fine quantum time machine

- PhysicsPhysics Today
- 2019

To understand the intricacies of thermodynamics in the quantum regime, it helps to be able to turn back the clock.

Classical discrete time crystals

- Physics
- 2018

The spontaneous breaking of time-translation symmetry in periodically driven quantum systems leads to a new phase of matter: the discrete time crystal (DTC). This phase exhibits collective…

Emergent limit cycles and time crystal dynamics in an atom-cavity system

- Physics, MathematicsPhysical Review A
- 2019

We propose an experimental realization of a time crystal using an atomic Bose-Einstein condensate in a high finesse optical cavity pumped with laser light detuned to the blue side of the relevant…

Classical Many-Body Time Crystals.

- Physics, MedicinePhysical review letters
- 2019

This work provides a simple and pedagogical framework by which to obtain many-body time crystals using parametrically coupled resonators and presents a clear distinction between single-mode time-translation symmetry breaking and a situation where an extensive number of degrees of freedom undergo the transition.

Supplemental Material for Classical many-body time crystals

- 2019

Discrete time crystals are a many-body state of matter where the extensive system’s dynamics are slower than the forces acting on it. Nowadays, there is a growing debate regarding the specific…

Response of a quantum disordered spin system to a local periodic drive

- Physics, Mathematics
- 2019

We consider a one dimensional spin chain system with quenched disorder and in the presence of a local periodic drive. We study the time evolution of the system in the Floquet basis and evaluate the…

Persistent Coherent Beating in Coupled Parametric Oscillators.

- Physics, MedicinePhysical review letters
- 2019

A new dynamical regime is demonstrated within the simplest network-two coupled parametric oscillators, where the oscillators never reach a steady state, but show persistent, full-scale, coherent beats, whose frequency reflects the coupling properties and strength.

Signatures of discrete time-crystallinity in transport through quantum dot arrays

- Physics
- 2021

Discrete time-crystals are periodically driven quantum many-body systems with broken discretetime translational symmetry. Measurements of time-crystallinity are currently limited to optical…

Realizing time crystals in discrete quantum few-body systems

- Physics, MathematicsPhysical Review B
- 2019

The exotic phenomenon of time translation symmetry breaking under periodic driving - the time crystal - has been shown to occur in many-body systems even in clean setups where disorder is absent. In…

Phase transitions in non-reciprocal active systems

- Physics
- 2020

Crowds, flocks of sheep, robotic swarms or firing neurons are examples of active systems composed of energy harvesting units that move or interact according to the state of their neighbours. The…

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