Monitored control of quantum continuous variables in linear and non-linear regimes

• Grant number: 15/12747-9
• Support type: Scholarships abroad - Research Internship - Post-doctor
• Effective date (Start): October 01, 2015
• Effective date (End): February 29, 2016
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal researcher: Miled Hassan Youssef Moussa
• Grantee: Oscar Salomón Duarte Muñoz
• Supervisor abroad: Alessio Serafini
• Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Research place: University College London (UCL), England
• Associated to the scholarship: 14/00485-7 - Entanglement dynamics in presence of dissipative environments for non-Gaussian states and the Fermi-Pasta-Ulam problem, BP.PD

Abstract

The purpose of this project is to monitor and steer the conditional evolution of continuous variable states and quantum correlations in very general settings. We are going to consider Gaussian and non-Gaussian states in optical cavities and follow their evolution through homodyne, heterodyne and general-dyne continuos measurements. We are interested in studying all the stages of the process, beginning with the generation of non-classical states through linear (Gaussian states) or non-linear processes (non-Gaussian states) and in controlling the evolution by the implementation of control feedback protocols, mediated by either measurements or by input-output relationships (coherent feedback). We will also explore the possibility of implementing quantum feedback control schemes based on non-Gaussian measurements, by taking deviations from the standard homodyne detection scheme. The study will then be applied specifically to opto-mechanical systems, and in particular to the levitated opto-mechanics set-up at UCL.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GENONI, MARCO G.; DUARTE, O. S.; SERAFINI, ALESSIO. Unravelling the noise: the discrimination of wave function collapse models under time-continuous measurements. NEW JOURNAL OF PHYSICS, v. 18, OCT 24 2016. Web of Science Citations: 7.