Qian Wang (Avtor), Ugo Marzolino (Avtor)

Povzetek

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 probes at phase transitions provides enhanced precision in measuring the transition control parameter. We focus on the Lipkin-Meshkov-Glick model that exhibits excited state quantum phase transitions at different magnetic fields. Resting on the model spectral properties, we show broad peaks of the Fisher information, and propose efficient schemes for precision magnetometry. The Lipkin-Meshkov-Glick model was first introduced for superconductivity and for nuclear systems, and recently realised in several condensed matter platforms. The above metrological schemes can be also exploited to measure microscopic properties of systems able to simulate the LipkinMeshkov-Glick model.

Ključne besede

metrologija;natančnost;meritve;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM - Univerza v Mariboru
Založnik: SciPost Foundation
UDK: 537:006.91
COBISS: 204703491 Povezava se bo odprla v novem oknu
ISSN: 2542-4653
Št. ogledov: 62
Št. prenosov: 127
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: metrologija;kvantni fazni prehodi;natančnost;meritve;
Vrsta dela (COBISS): Znanstveno delo
Strani: 33 str.
Letnik: ǂVol. ǂ17
Zvezek: ǂIss. ǂ2
Čas izdaje: 2024
DOI: 10.21468/SciPostPhys.17.2.043
ID: 24791836