| Autor: |
Kucsko, Georg, Choi, Soonwon, Choi, Joonhee, C. Maurer, Peter, Zhou, Hengyun, Landig, Renate, Sumiya, Hitoshi, Onoda, Shinobu, Isoya, Junich, Jelezko, Fedor, Demler, Eugene, Y. Yao, Norman, D. Lukin, Mikhail |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Zdroj: |
Physical Review Letters. 121(2):023601-023601-5 |
| Popis: |
Statistical mechanics underlies our understanding of macroscopic quantum systems. It is based on the assumption that out-of-equilibrium systems rapidly approach their equilibrium states, forgetting any information about their microscopic initial conditions. This fundamental paradigm is challenged by disordered systems, in which a slowdown or even absence of thermalization is expected. We report the observation of critical thermalization in a three dimensional ensemble of ∼ 10 6 electronic spins coupled via dipolar interactions. By controlling the spin states of nitrogen vacancy color centers in diamond, we observe slow, subexponential relaxation dynamics and identify a regime of power-law decay with disorder-dependent exponents; this behavior is modified at late times owing to many-body interactions. These observations are quantitatively explained by a resonance counting theory that incorporates the effects of both disorder and interactions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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