Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Degree of Quantumness in Quantum Synchronization

Full text
Author(s):
Eneriz, H. [1, 2] ; Rossatto, D. Z. [3, 4] ; Cardenas-Lopez, F. A. [5, 6] ; Solano, E. [7, 1, 5, 6] ; Sanz, M. [1]
Total Authors: 5
Affiliation:
[1] Univ Basque Country, UPV EHU, Dept Phys Chem, Apartado 644, Bilbao 48080 - Spain
[2] Univ Bordeaux, IOGS, CNRS, UMR 5298, LP2N, F-33400 Talence - France
[3] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Estadual Paulista Unesp, Campus Expt Itapeva, BR-18409010 Itapeva, SP - Brazil
[5] Shanghai Univ, Int Ctr Quantum Artificial Intelligence Sci & Tec, Shanghai 200444 - Peoples R China
[6] Shanghai Univ, Phys Dept, Shanghai 200444 - Peoples R China
[7] Ikerbasque, Basque Fdn Sci, Maria Diaz de Haro 3, Bilbao 48013 - Spain
Total Affiliations: 7
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 9, DEC 27 2019.
Web of Science Citations: 0
Abstract

We introduce the concept of degree of quantumness in quantum synchronization, a measure of the quantum nature of synchronization in quantum systems. Following techniques from quantum information, we propose the number of non-commuting observables that synchronize as a measure of quantumness. This figure of merit is compatible with already existing synchronization measurements, and it captures different physical properties. We illustrate it in a quantum system consisting of two weakly interacting cavity-qubit systems, which are coupled via the exchange of bosonic excitations between the cavities. Moreover, we study the synchronization of the expectation values of the Pauli operators and we propose a feasible superconducting circuit setup. Finally, we discuss the degree of quantumness in the synchronization between two quantum van der Pol oscillators. (AU)

FAPESP's process: 13/23512-7 - Circuit Quantum Electrodynamics: Bistability and Squeezed States
Grantee:Daniel Zini Rossatto
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/24576-1 - Ultrastrong and deep strong coupling regimes in circuit quantum electrodynamics
Grantee:Daniel Zini Rossatto
Support type: Scholarships abroad - Research Internship - Post-doctor