Transport properties and quantum computation in nanostructures

• Grant number: 12/13052-6
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2013
• End date: February 28, 2015
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Leonardo Kleber Castelano
• Grantee: Leonardo Kleber Castelano
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

This project aims at the systematic study of transport properties in nanostructures, as well as the potential applicability of these nanostructures as elements for quantum computing. Thus, we intend to analyze the problem of transport in quantum dots considering the electron-electron interaction between the incident electron and the confined ones. In addition, we will study the spin-dependent transport in quantum wires and the spin-transfer torque effect. Finally, we will analyze the dynamics of quantum correlations, essential for quantum computing implementation, in quantum dots and nitrogen vacancy in diamond. (AU)

Scientific publications

(15)

(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)

CASTELANO, LEONARDO K.; DE LIMA, EMANUEL F.; MADUREIRA, JUSTINO R.; DEGANI, MARCOS H.; MAIALLE, MARCELO Z.. Optimal control of universal quantum gates in a double quantum dot. Physical Review B, v. 97, n. 23, JUN 4 2018. (17/10190-2, 12/13052-6)

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. (17/07787-7, 15/05581-7, 12/13052-6)

PERSHIN, YURIY V.; CASTELANO, LEONARDO K.; HARTMANN, FABIAN; LOPEZ-RICHARD, VICTOR; DI VENTRA, MASSIMILIANO. A Memristive Pascaline. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v. 63, n. 6, p. 558-562, JUN 2016. (14/02112-3, 12/13052-6)

PFENNING, ANDREAS; HARTMANN, FABIAN; SOUSA DIAS, MARIAMA REBELLO; CASTELANO, LEONARDO KLEBER; SUESSMEIER, CHRISTOPH; LANGER, FABIAN; HOEFLING, SVEN; KAMP, MARTIN; MARQUES, GILMER EUGENIO; WORSCHECH, LUKAS; et al. Nanothermometer Based on Resonant Tunneling Diodes: From Cryogenic to Room Temperatures. ACS NANO, v. 9, n. 6, p. 6271-6277, JUN 2015. (13/24253-5, 12/13052-6, 12/51415-3)

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., 2018-03-21. (15/05581-7, 17/07787-7, 12/13052-6)

CASTELANO, LEONARDO K.; DE LIMA, EMANUEL F.; MADUREIRA, JUSTINO R.; DEGANI, MARCOS H.; MAIALLE, MARCELO Z.. Optimal control of universal quantum gates in a double quantum dot. PHYSICAL REVIEW B, v. 97, n. 23, p. 12-pg., 2018-06-04. (12/13052-6, 17/10190-2)

LOPES-OLIVEIRA, V.; CASTELANO, L. K.; MARQUES, G. E.; ULLOA, S. E.; LOPEZ-RICHARD, V.. Berry phase and Rashba fields in quantum rings in tilted magnetic field. Physical Review B, v. 92, n. 3, JUL 29 2015. (12/13052-6)

CASTELANO, L. K.; FANCHINI, F. F.; BERRADA, K.. Open quantum system description of singlet-triplet qubits in quantum dots. Physical Review B, v. 94, n. 23, DEC 23 2016. (15/05581-7, 12/13052-6)

BEZERRA, ANIBAL T.; CASTELANO, LEONARDO K.; DEGANI, MARCOS H.; MAIALLE, MARCELO Z.; FARINAS, PAULO F.; STUDART, NELSON. Generation and control of spin-polarized photocurrents in GaMnAs heterostructures. Applied Physics Letters, v. 104, n. 2, JAN 13 2014. (12/13052-6)

PFENNING, ANDREAS; HARTMANN, FABIAN; DIAS, MARIAMA REBELLO SOUSA; LANGER, FABIAN; KAMP, MARTIN; CASTELANO, LEONARDO KLEBER; LOPEZ-RICHARD, VICTOR; MARQUES, GILMAR EUGENIO; HOEFLING, SVEN; WORSCHECH, LUKAS. Photocurrent-voltage relation of resonant tunneling diode photodetectors. Applied Physics Letters, v. 107, n. 8, AUG 24 2015. (12/13052-6, 12/51415-3)

HAI, G-Q; CASTELANO, L. K.. Metastable electron-pair states in a two-dimensional crystal. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 26, n. 11, MAR 19 2014. (12/13052-6)

FERNANDES DOS SANTOS, L.; CASTELANO, L. K.; PADILHA, J. X.; PUSEP, Y.; MARQUES, G. E.; SMIRNOV, D.; BAKAROV, A. K.; TOROPOV, A. I.; LOPEZ-RICHARD, V.. Excitonic spin-splitting in quantum wells with a tilted magnetic field. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 28, n. 5, FEB 10 2016. (12/13052-6, 12/02655-1)

LOPES-OLIVEIRA, V.; CASTELANO, L. K.; MARQUES, G. E.; ULLOA, S. E.; LOPEZ-RICHARD, V.. Berry phase and Rashba fields in quantum rings in tilted magnetic field. Physical Review B, v. 92, n. 3, p. 7-pg., 2015-07-29. (12/13052-6)

CASTELANO, L. K.; FANCHINI, F. F.; BERRADA, K.. Open quantum system description of singlet-triplet qubits in quantum dots. PHYSICAL REVIEW B, v. 94, n. 23, p. 5-pg., 2016-12-23. (15/05581-7, 12/13052-6)

HARTMANN, F.; MAIER, P.; REBELLO SOUSA DIAS, M.; GOEPFERT, S.; CASTELANO, L. K.; EMMERLING, M.; SCHNEIDER, C.; HOEFLING, S.; KAMP, M.; PERSHIN, Y. V.; et al. Nanoscale Tipping Bucket Effect in a Quantum Dot Transistor-Based Counter. Nano Letters, v. 17, n. 4, p. 2273-2279, APR 2017. (14/02112-3, 12/13052-6, 12/51415-3)