Colloquium: Quantum and classical discrete time crystals

MP Zaletel, M Lukin, C Monroe, C Nayak, F Wilczek… - Reviews of Modern …, 2023 - APS
The spontaneous breaking of time-translation symmetry has led to the discovery of a new
phase of matter: the discrete time crystal. Discrete time crystals exhibit rigid subharmonic …

Dynamics of inhomogeneous spin ensembles with all-to-all interactions: Breaking permutational invariance

F Iemini, D Chang, J Marino - Physical Review A, 2024 - APS
We investigate the consequences of introducing nonuniform initial conditions in the
dynamics of spin ensembles characterized by all-to-all interactions. Specifically, our study …

Quantum Metrology and Sensing with Many-Body Systems

V Montenegro, C Mukhopadhyay, R Yousefjani… - arXiv preprint arXiv …, 2024 - arxiv.org
The main power of quantum sensors is achieved when the probe is composed of several
particles. In this situation, quantum features such as entanglement contribute in enhancing …

Discrete time crystals enforced by Floquet-Bloch scars

B Huang, TH Leung, DM Stamper-Kurn, WV Liu - Physical Review Letters, 2022 - APS
We analytically identify a new class of quantum scars protected by spatiotemporal
translation symmetries, dubbed Floquet-Bloch scars. They are distinguished from previous …

Discrete time crystal sensing

LJI Moon, PM Schindler, RJ Smith, E Druga… - arXiv preprint arXiv …, 2024 - arxiv.org
Prethermal discrete time crystals (PDTCs) are a nonequilibrium state of matter characterized
by long-range spatiotemporal order, and exhibiting a subharmonic response stabilized by …

Stark time crystals: Symmetry breaking in space and time

A Kshetrimayum, J Eisert, DM Kennes - Physical Review B, 2020 - APS
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 …

Analytical theory of cat scars with discrete time-crystalline dynamics in Floquet systems

B Huang - Physical Review B, 2023 - APS
We reconstruct the spectral pairing theories to enable analytical descriptions of eigenstate
spatiotemporal orders in translation-invariant system without prethermal conditions. It is …

Unified light-matter Floquet theory and its application to quantum communication

G Engelhardt, S Choudhury, WV Liu - Physical Review Research, 2024 - APS
Periodically driven quantum systems can exhibit a plethora of intriguing nonequilibrium
phenomena that can be analyzed using Floquet theory. Naturally, Floquet theory is …

Thermal melting of discrete time crystals: A dynamical phase transition induced by thermal fluctuations

M Yue, X Yang, Z Cai - Physical Review B, 2022 - APS
The stability of a discrete time crystal against thermal fluctuations has been studied
numerically by solving a stochastic Landau-Lifshitz-Gilbert equation of a periodically driven …

Polaritonic and excitonic semiclassical time crystals based on TMDC strips in an external periodic potential

GP Martins, OL Berman, G Gumbs - Scientific Reports, 2023 - nature.com
We investigated the dynamics of Bose–Einstein condensates (BECs) under an external
periodic potential. We consider two such systems, the first being made of exciton–polaritons …