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Ultrastrong and deep strong coupling regimes in circuit quantum electrodynamics

Grant number: 14/24576-1
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): April 01, 2015
Effective date (End): March 31, 2016
Field of knowledge:Physical Sciences and Mathematics - Physics - General Physics
Principal Investigator:Celso Jorge Villas-Bôas
Grantee:Daniel Zini Rossatto
Supervisor abroad: Enrique Solano
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Local de pesquisa : Universidad del País Vasco (UPV), Spain  
Associated to the scholarship:13/23512-7 - Circuit Quantum Electrodynamics: Bistability and Squeezed States, BP.PD


Recently, the investigation of light-matter interaction in ultrastrong and deep strong coupling regimes has revealed novel counterintuitive physical phenomena. In this research internship abroad we will study some relevant cases concerning the ultrastrong and the deep strong coupling regimes of the quantum Rabi model in the presence of dissipation, especially in the context of circuit quantum electrodynamics, since superconducting qubits are promising candidates for future quantum applications on a chip. For example, one of the cases under consideration is the study of stable Schrödinger's cat states, as, under certain conditions, the ground state of the quantum Rabi model is related to those states, so that dissipation will lead the system to such states instead of destroy them as typically occurs in the protocols for generating non-classical states. (AU)

Scientific publications (4)
(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)
ENERIZ, H.; ROSSATTO, D. Z.; CARDENAS-LOPEZ, F. A.; SOLANO, E.; SANZ, M. Degree of Quantumness in Quantum Synchronization. SCIENTIFIC REPORTS, v. 9, DEC 27 2019. Web of Science Citations: 0.
FELICETTI, S.; ROSSATTO, D. Z.; RICO, E.; SOLANO, E.; FORN-DIAZ, P. Two-photon quantum Rabi model with superconducting circuits. Physical Review A, v. 97, n. 1 JAN 30 2018. Web of Science Citations: 19.
ROSSATTO, DANIEL Z.; VILLAS-BOAS, CELSO J.; SANZ, MIKEL; SOLANO, ENRIQUE. Spectral classification of coupling regimes in the quantum Rabi model. Physical Review A, v. 96, n. 1 JUL 24 2017. Web of Science Citations: 27.
ROSSATTO, D. Z.; FELICETTI, S.; ENERIZ, H.; RICO, E.; SANZ, M.; SOLANO, E. Entangling polaritons via dynamical Casimir effect in circuit quantum electrodynamics. Physical Review B, v. 93, n. 9 MAR 14 2016. Web of Science Citations: 30.

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