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Use of quantum optimal control and dynamic decoupling to enable quantum simulation in semiconductor devices

Grant number: 17/07787-7
Support Opportunities:Regular Research Grants
Start date: August 01, 2017
End date: July 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Felipe Fernandes Fanchini
Grantee:Felipe Fernandes Fanchini
Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

In this research project we will study methods of protection and optimization of quantum logic gates in quantum dots, in order to enable quantum simulation in these devices. Our main objective is to develop efficient and realistic strategies to protect information and quantum gates against the deleterious effects of the environment. We will study defensive strategies based on (i) dynamic decoupling and (ii) quantum optimal control. Based on our recent studies, we will explore these techniques to include physical systems consisting of many levels of energy (qudits) and also many parts (chains of spins). We will determine and compare the effectiveness of these two different control methods and we will concatenate them in order to increase the protection efficiency. Our final goal, in this sense, is to apply such methodology to the application in quantum simulation, mainly in the study of Hubbard model and the simulation of controllable chemical reactions. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications (5)
(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)
RIVERA-RUIZ, C. M.; DE LIMA, E. F.; FANCHINI, F. F.; LOPEZ-RICHARD, V.; CASTELANO, L. K.. Optimal control of hybrid qubits: Implementing the quantum permutation algorithm. Physical Review A, v. 97, n. 3, . (17/07787-7, 15/05581-7, 12/13052-6)
YALCINKAYA, I.; CAKMAK, B.; KARPAT, G.; FANCHINI, F. F.. Continuous dynamical decoupling and decoherence-free subspaces for qubits with tunable interaction. QUANTUM INFORMATION PROCESSING, v. 18, n. 5, . (17/07787-7)
DEBARBA, TIAGO; FANCHINI, FELIPE F.. Non-Markovianity quantifier of an arbitrary quantum process. PHYSICAL REVIEW A, v. 96, n. 6, p. 6-pg., . (08/57856-6, 15/05581-7, 17/07787-7)
RIVERA-RUIZ, C. M.; DE LIMA, E. F.; FANCHINI, F. F.; LOPEZ-RICHARD, V.; CASTELANO, L. K.. Optimal control of hybrid qubits: Implementing the quantum permutation algorithm. PHYSICAL REVIEW A, v. 97, n. 3, p. 6-pg., . (15/05581-7, 17/07787-7, 12/13052-6)
DEBARBA, TIAGO; FANCHINI, FELIPE F.. Non-Markovianity quantifier of an arbitrary quantum process. Physical Review A, v. 96, n. 6, . (17/07787-7, 08/57856-6, 15/05581-7)