Work

Quantum metrology with critical driven-dissipative collective spin system

Year: 2023

Type: article

Abstract: We propose two critical dissipative quantum metrology schemes for single parameter estimation which are based on a quantum probe consisting of a coherently driven ensemble of N spin-1/2 particles under the effect of a collective spin decay. The collective spin system exhibits a dissipative phase transition between thermal and ferromagnetic phases, which is characterized by a nonanalytical behavior of the spin observables. We show that thanks to the dissipative phase transition the sensitivity of the parameter estimation can be significantly enhanced. Furthermore, we show that our steady state is a spin squeezed state which allows one to perform parameter estimation with sub shot-noise limited measurement uncertainty.

Source: Physica Scripta

DOI: 10.1088/1402-4896/ace99f

Authors: Venelin P Pavlov, Diego Porras, Peter A Ivanov

Institutions: Sofia University "St. Kliment Ohridski", Consejo Superior de Investigaciones Científicas, Instituto de Física Fundamental

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,220

OpenAlex ID: W4384942773

FWCI: 2.18

Cites: 34

Cited by: 25

Related to: 10