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Št. zadetkov: 2
Fisher information approach to nonequilibrium phase transitions in a quantum XXZ spin chain with boundary noise
Ugo Marzolino, Tomaž Prosen
Izvirni znanstveni članek
Oznake: kvantna mehanika;spinski modeli;kvantne verige;fazni prehodi;neravnovesna statistična mehanika;quantum mechanics;spin models;quantum chains;phase transitions;nonequilibrium statistical mechanics;
We investigated quantum critical behaviors in the nonequilibrium steady state of a XXZ spin chain with boundary Markovian noise using Fisher information. The latter represents the distance between two infinitesimally close states, and its superextensive size scaling witnesses a critical behavior due ...
Leto: 2017 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Precision magnetometry exploiting excited state quantum phase transitions
Qian Wang, Ugo Marzolino
Izvirni znanstveni članek
Oznake: metrologija;natančnost;meritve;
Critical behaviour in phase transitions is a resource for enhanced precision metrology. The reason is that the function, known as Fisher information, is superextensive at critical points, and, at the same time, quantifies performances of metrological protocols. Therefore, preparing metrological prob ...
Leto: 2024 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Št. zadetkov: 2
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