# Eternal discrete time crystal beating the Heisenberg limit

@article{Lyu2020EternalDT, title={Eternal discrete time crystal beating the Heisenberg limit}, author={Changyuan Lyu and S. Roy Choudhury and Chenwei Lv and Yangqian Yan and Qi Zhou}, journal={arXiv: Quantum Gases}, year={2020}, volume={2} }

A discrete time crystal (DTC) repeats itself with a rigid rhythm, mimicking a ticking clock set by the interplay between its internal structures and an external force. DTCs promise profound applications in precision time-keeping and other quantum techniques. However, it has been facing a grand challenge of thermalization. The periodic driving supplying the power may ultimately bring DTCs to thermal equilibrium and destroy their coherence. Here, we show that an all-to-all interaction delivers a…

## 4 Citations

Stability of the discrete time-crystalline order in spin-optomechanical and open cavity QED systems

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Zhengda Hu, 2, ∗ Xingyu Gao, 2 and Tongcang Li 3, 4, 5, † Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA School of Science, Jiangnan University, Wuxi…

Route to Extend the Lifetime of a Discrete Time Crystal in a Finite Spin Chain without Disorder

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- 2021

Periodically driven (Floquet) systems are described by time-dependent Hamiltonians that possess discrete time translation symmetry. The spontaneous breaking of this symmetry leads to the emergence of…

Stark time crystals: Symmetry breaking in space and time

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- 2020

The compelling original idea of a time crystal has referred to a structure that repeats in time as well as in space, an idea that has attracted significant interest recently. While obstructions to…

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