# Many-body–localized discrete time crystal with a programmable spin-based quantum simulator

@article{Randall2021ManybodylocalizedDT, title={Many-body–localized discrete time crystal with a programmable spin-based quantum simulator}, author={J. Randall and Conor E. Bradley and Floris van der Gronden and Alejandra Galicia and M. H. Abobeih and Matthew L. Markham and Daniel J. Twitchen and Francisco Machado and Norman Y. Yao and Tim Hugo Taminiau}, journal={Science}, year={2021}, volume={374}, pages={1474 - 1478} }

Description Establishing order, time after time The formation of discrete time crystals, a novel phase of matter, has been proposed for some many-body quantum systems under periodic driving conditions. Randall et al. used an array of nuclear spins surrounding a nitrogen vacancy center in diamond as their many-body quantum system. Subjecting the system to a series of periodic driving pulses, they observed ordering of the spins occurring at twice the driving frequency, a signature that they claim…

## 40 Citations

### Realization of a discrete time crystal on 57 qubits of a quantum computer

- PhysicsScience advances
- 2022

Unconventional dynamical phases that violate ergodicity have been a subject of extensive research in recent years. A periodically driven system is naively expected to lose all memory of its initial…

### Digital quantum simulation of Floquet symmetry-protected topological phases

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Quantum many-body systems away from equilibrium host a rich variety of exotic phenomena that are forbidden by equilibrium thermodynamics. A prominent example is that of discrete time crystals1–8, in…

### Emergence and Dynamical Stability of a Charge Time-Crystal in a Current-Carrying Quantum Dot Simulator.

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Periodically driven open quantum systems that never thermalize exhibit a discrete time-crystal behavior, a nonequilibrium quantum phenomenon that has shown promise in quantum information processing…

### Time-crystalline eigenstate order on a quantum processor

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- 2021

Quantum many-body systems display rich phase structure in their low-temperature equilibrium states1. However, much of nature is not in thermal equilibrium. Remarkably, it was recently predicted that…

### Photonic Analogue of a Continuous Time Crystal

- Physics
- 2022

Time crystals are an eagerly sought phase of matter in which time-translation symmetry is broken. Quantum time crystals with discretely broken time-translation symmetry have been demonstrated in…

### Observation of a continuous time crystal

- PhysicsScience
- 2022

Time crystals are classified as discrete or continuous depending on whether they spontaneously break discrete or continuous time translation symmetry. Although discrete time crystals have been…

### Continuous-time crystal from a spontaneous many-body Floquet state

- PhysicsPhysical Review A
- 2022

Floquet driven systems represent an extremely interesting arena to study out-of-equilibrium phenomena. For instance, they provide realizations of discrete time crystals, where the discrete time…

### Dynamical topological phase realized in a trapped-ion quantum simulator.

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Nascent platforms for programmable quantum simulation offer unprecedented access to new regimes of far-from-equilibrium quantum many-body dynamics in almost isolated systems. Here achieving precise…

### Tuning between Continuous Time Crystals and Many-Body Scars in Long-Range XYZ Spin Chains.

- PhysicsPhysical review letters
- 2022

Persistent oscillatory dynamics in nonequilibrium many-body systems is a tantalizing manifestation of ergodicity breakdown that continues to attract much attention. Recent works have focused on two…

### Discrete Time-Crystalline Response Stabilized by Domain-Wall Confinement

- PhysicsPhysical Review X
- 2022

Discrete time crystals represent a paradigmatic nonequilibrium phase of periodically driven matter. Protecting its emergent spatiotemporal order necessitates a mechanism that hinders the spreading of…

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