Year: 2025
Type: article
Abstract: In quantum mechanics, the probability distribution function and full counting statistics play a fundamental role in characterizing the fluctuations of quantum observables, as they encode the complete information about these fluctuations. In this Letter, we measure these two quantities in a trapped-ion quantum simulator for the transverse and longitudinal magnetization within a subsystem. We utilize the toolbox of classical shadows to postprocess the measurements performed in random bases. The measurement scheme efficiently allows access to the full counting statistics and probability distribution function of all possible operators on desired choices of subsystems of an extended quantum system.
Source: Physical Review Letters
DOI: 10.1103/gyvf-s5bd
Institutions: Scuola Internazionale Superiore di Studi Avanzati, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Universität Innsbruck, Institute for Quantum Optics and Quantum Information Innsbruck, The Abdus Salam International Centre for Theoretical Physics (ICTP)
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4415166261