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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 type:Regular Research Grants
Duration: August 01, 2017 - July 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Felipe Fernandes Fanchini
Grantee:Felipe Fernandes Fanchini
Home Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil


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)

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)
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 MAY 2019. Web of Science Citations: 0.
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 MAR 21 2018. Web of Science Citations: 1.
DEBARBA, TIAGO; FANCHINI, FELIPE F. Non-Markovianity quantifier of an arbitrary quantum process. Physical Review A, v. 96, n. 6 DEC 12 2017. Web of Science Citations: 2.

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