Quantum optical phenomena in cavity QED and its applications: towards quantum computing

• Grant number: 13/01182-5
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: May 01, 2013
• End date: March 05, 2014
• Field of knowledge: Physical Sciences and Mathematics - Physics - Atomic and Molecular Physics
• Principal Investigator: Celso Jorge Villas-Bôas
• Grantee: James Alves de Souza
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

The emerging fields of quantum computation and quantum information science has required efforts on the development of new concepts and tools for the controlled application of quantum phenomena, in particular at the most fundamental level of single particles. By harnessing aspects of quantum mechanics, communication and information processing could be radically transformed. Promising forms of quantum information technology include optical quantum cryptographic systems and computing using photons for quantum logic operations. In optical physics, it is cavity quantum electrodynamics (CQED) which provides the ideal setting to engineer the interaction between individual quanta of light and matter. The control of light with light at the single photon level is a challenging task that has numerous interesting applications within nonlinear optics and quantum information science. This type of control can only be achieved through highly nonlinear interactions, such as those based on electromagnetic induced transparency (EIT). The goal of our project is on exploring theoretically the phenomenon of EIT in cavity QED in order to provide a deeper understanding of the very basis of quantum mechanics to adequately understand and improve the functionality of quantum devices, which can be the building blocks for quantum computers such as quantum memories, quantum optical transistors and single-photon detectors.

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)

SOUZA, J. A.; CABRAL, L.; OLIVEIRA, R. R.; VILLAS-BOAS, C. J.. Electromagnetically-induced-transparency-related phenomena and their mechanical analogs. Physical Review A, v. 92, n. 2, AUG 11 2015. (13/01182-5, 14/07350-0, 13/04162-5, 12/00176-9)

SOUZA, J. A.; FIGUEROA, E.; CHIBANI, H.; VILLAS-BOAS, C. J.; REMPE, G.. Coherent Control of Quantum Fluctuations Using Cavity Electromagnetically Induced Transparency. Physical Review Letters, v. 111, n. 11, SEP 11 2013. (10/17609-0, 13/01182-5, 12/00176-9)