Dr. Jose Maria Villas-Boas

Profile

Academic positionAssociate Professor, Senior Lecturer, Reader
Research fieldsTheoretical Condensed Matter Physics,Experimental Condensed Matter Physics
Keywordselectron spin, optical excitation, quantum dot molecule, quantum information, qubit

Current contact address

CountryBrazil
CityUberlandia
InstitutionUniversidade Federal de Uberlandia (UFU)
InstituteInstituto de Física
Homepagewww.infis.ufu.br

Host during sponsorship

Prof. Dr. Gerhard AbstreiterLehrstuhl E24: Experimentelle Halbleiter Physik I (Walter-Schottky-Institut), Technische Universität München, Garching
Prof. Dr. Jonathan J. FinleyWalter Schottky Institut, Technische Universität München, Garching
Start of initial sponsorship01/08/2007

Programme(s)

2006Humboldt Research Fellowship Programme

Publications (partial selection)

2024Ximenes, J. J. and Pires, M. A. and Villas-B{\^o}as, J. M.: Parrondo's effect in continuous-time quantum walks. In: Phys. Rev. A, 109, 2024, 032417
2024Cano, L. E. and Villas-B{\^o}as, J. M. and Guimar{\~a}es, P. S. S.: Weak to strong coupling conditions for a microcavity–quantum dot system under incoherent pumping. In: Physica B: Condensed Matter, 691, 2024, 416282
2022Vargas-Calder{\'o}n, Vladimir and Vinck-Posada, Herbert and Villas-B{\^o}as, J. M.: Dark-exciton giant Rabi oscillations with no external magnetic field. In: Phys. Rev. B, 106, 2022, 035305
2022Lira, J. and Villas-B{\^o}as, J. M. and Sanz, L. and Alcalde, A. M.: Enhanced solar photocurrent using a quantum-dot molecule. In: J. Opt. Soc. Am. B, 39, 2022, 2047--2055
2020Jim{\'e}nez-Orjuela, C. A. and Vinck-Posada, H. and Villas-B{\^o}as, Jos{\'e} M.: Magnetic and temperature control in the emission of a quantum dot strongly coupled to a microcavity. In: Physica B: Condensed Matter, 592, 2020, 412215
2020Echeverri-Arteaga, Santiago and Vinck-Posada, Herbert and Villas-B{\^o}as, Jos{\'e} M. and G{\'o}mez, Edgar A.: Pure dephasing vs. Phonon mediated off-resonant coupling in a quantum-dot-cavity system. In: Opt. Commun., 460, 2020, 125115
2020Jim{\'e}nez-Orjuela, C. A. and Vinck-Posada, H. and Villas-B{\^o}as, Jos{\'e} M.: Strong coupling of two quantum dots with a microcavity in the presence of an external and tilted magnetic field. In: Physica B: Condensed Matter, 585, 2020, 412070
2018Neto, A. F. and Villas-B{\^o}as, J. M.: A simple way to obtain average occupation on quantum systems. In: Rev. Bras. Ensino F{\'i}s., 41, 2018,
2018Jim{\'e}nez-Orjuela, C. A. and Vinck-Posada, H. and Villas-B{\^o}as, Jos{\'e} M.: Polarization switch in an elliptical micropillar – quantum dot system induced by a magnetic field in Faraday configuration. In: Phys. Lett. A, 382, 2018, 3216--3219
2017de Freitas, Antonio and Sanz, L. and Villas-B{\^o}as, Jos{\'e} M.: Coherent control of the dynamics of a single quantum-dot exciton qubit in a cavity. In: Phys. Rev. B, 95, 2017, 115110
2017Jim{\'e}nez-Orjuela, C. A. and Vinck-Posada, H. and Villas-B{\^o}as, Jos{\'e} M.: Dark excitons in a quantum-dot--cavity system under a tilted magnetic field. In: Phys. Rev. B, 96, 2017, 125303
2013Müller, Kai and Bechtold, Alexander and Ruppert, Claudia and Kaldewey, Timo and Zecherle, Markus and Wildmann, Johannes S. and Bichler, Max and Krenner, Hubert J. and Villas-B{\^o}as, Jos{\'e} M. and Abstreiter, Gerhard and Betz, Markus and Finley, Jonathan J.: Probing ultrafast carrier tunneling dynamics in individual quantum dots and molecules. In: Annalen der Physik, 525, 2013, 49--58
2013Borges, H. S. and Sanz, L. and Villas-B{\^o}as, J. M. and Alcalde, A. M.: Quantum interference and control of the optical response in quantum dot molecules. In: Appl. Phys. Lett., 103, 2013, 222101
2013Assun{\c c}{\~a}o, M. O. and de Oliveira, E. J. R. and Villas-B{\^o}as, J. M. and Souza, F. M.: Thermal effects on photon-induced quantum transport in a single quantum dot. In: J. Phys.: Condens. Matter, 25, 2013, 135301
2012Müller, K. and Bechtold, A. and Ruppert, C. and Zecherle, M. and Reithmaier, G. and Bichler, M. and Krenner, H. J. and Abstreiter, G. and Holleitner, A. W. and Villas-B{\^o}as, J. M. and Betz, M. and Finley, J. J.: Electrical Control of Interdot Electron Tunneling in a Double InGaAs Quantum-Dot Nanostructure. In: Phys. Rev. Lett., 108, 2012, 197402
2012Alvarenga, D{\'e}borah R. and Parra-Murillo, Carlos A. and Kawabata, Rudy M. S. and Guimar{\~a}es, Paulo S. S. and Unterrainer, K. and Pires, Mauricio P. and Vieira, Gustavo S. and Villas-B{\^o}as, Jos{\'e} M. and Maialle, Marcelo Z. and Degani, Marcos H. and Farinas, Paulo F. and Studart, Nelson and Souza, Patricia L.: Exceptionally Narrow-Band Quantum Dot Infrared Photodetector. In: IEEE J. Quantum Electron., 48, 2012, 1360-1366
2012Müller, Kai and Bechtold, Alexander and Ruppert, Claudia and Krenner, Hubert J. and Bichler, Max and Villas-B{\^o}as, J. M. and Abstreiter, Gerhard and Betz, Markus and Finley, Jonathan J.: Probing ultrafast charge and spin dynamics in a quantum dot molecule. Proceedings of SPIE - The International Society for Optical Engineering. 2012. 82601L
2012Borges, H. S. and Sanz, L. and Villas-B{\^o}as, J. M. and Diniz Neto, O. O. and Alcalde, A. M.: Tunneling induced transparency and slow light in quantum dot molecules. In: Phys. Rev. B, 85, 2012, 115425
2012Santos, M. M. and Prado, F. O. and Borges, H. S. and Alcalde, A. M. and Villas-B{\^o}as, J. M. and Duzzioni, E. I.: Using quantum state protection via dissipation in a quantum-dot molecule to solve the Deutsch problem. In: Phys. Rev. A, 85, 2012, 032323
2011Prado, F. O. and Luiz, F. S. and Villas-B{\^o}as, J. M. and Alcalde, A. M. and Duzzioni, E. I. and Sanz, L.: Atom-mediated effective interactions between modes of a bimodal cavity. In: Phys. Rev. A, 84, 2011, 053839
2011Laussy, F. P. and Laucht, A. and del Valle, E. and Finley, J. J. and Villas-B{\^o}as, J. M.: Luminescence spectra of quantum dots in microcavities. III. Multiple quantum dots. In: Phys. Rev. B, 84, 2011, 195313
2011Silva, A. G. and Lopez, F. E. and Guimar{\~a}es, P. S. S. and Pires, M. P. and Souza, P. L. and Landi, S. M. and Villas-B{\^o}as, J. M. and Vieira, G. S. and Vinck-Posada, H. and Rodriguez, B. A.: Tunneling through stacked InAs/InGaAs/InP self-assembled quantum dots in a magnetic field. In: J. Appl. Phys., 110, 2011, 083717
2010Laucht, A. and Villas-B{\^o}as, J. M. and Stobbe, S. and Hauke, N. and Hofbauer, F. and Böhm, G. and Lodahl, P. and Amann, M.-C. and Kaniber, M. and Finley, J. J.: Mutual coupling of two semiconductor quantum dots via an optical nanocavity. In: Phys. Rev. B, 82, 2010, 075305
2010Borges, H. S. and Sanz, L. and Villas-B{\^o}as, J. M. and Alcalde, A. M.: Robust states in semiconductor quantum dot molecules. In: Phys. Rev. B, 81, 2010, 075322
2009Feu, W. H. M. and Villas-B{\^o}as, J. M. and Cury, L. A. and Guimar{\~a}es, P. S. S. and Vieira, G. S. and Tanaka, R. Y. and Passaro, A. and Pires, M. P. and Landi, S. M. and Souza, P. L.: Current bistability in a weakly coupled multi-quantum well structure: a magnetic field induced ‘memory effect’. In: J. Phys. D: Appl. Phys., 42, 2009, 145109
2009Laucht, A. and Hauke, N. and Villas-B{\^o}as, J. M. and Hofbauer, F. and Böhm, G. and Kaniber, M. and Finley, J. J.: Dephasing of Exciton Polaritons in Photoexcited InGaAs Quantum Dots in GaAs Nanocavities. In: Phys. Rev. Lett., 103, 2009, 087405
2009Gebhard, T. and Unterrainer, K. and Alvarenga, D. and Guimar{\~a}es, P. S. S. and Villas-B{\^o}as, J. M. and Pires, M. P. and Vieira, G. S. and Souza, P. L.: Intraband Auger Effect in Quantum Dot Structures. In: Int. J. Mod. Phys. B, 23, 2009, 2872--2878
2009Gebhard, T. and Alvarenga, D. and Souza, P. L. and Guimar{\~a}es, P. S. S. and Unterrainer, K. and Pires, M. P. and Vieira, G. S. and Villas B{\^o}as, J. M.: Intraband auger effect in InAs/InGaAlAs/InP quantum dot structures. In: Journal of Physics: Conference Series, 167, 2009, 012001
2008S. S. Sokolov, Yu. P. Monarkha, J. M. Villas-Boas, N. Studart: Confinement effects on decay rate of surface electron states over liquid helium. In: Low Temperature Physics, 2008, 385-387
2008Sokolov, S. S. and Monarkha, Yu. P. and Villas-B{\^o}as, J. M. and Studart, Nelson: Confinement effects on decay rate of surface electron states over liquid helium. In: Low Temp. Phys., 34, 2008, 385--387
2008Gebhard, T. and Alvarenga, D. and Souza, P. L. and Guimar{\~a}es, P. S. S. and Unterrainer, K. and Pires, M. P. and Vieira, G. S. and Villas-B{\^o}as, J. M.: Evidence for an intraband Auger effect in InAs/InGaAIAs/InP quantum dot structures. In: ECS Transactions, 14, 2008, 467--471
2008Gebhard, T. and Alvarenga, D. and Souza, P. L. and Guimar{\~a}es, P. S. S. and Unterrainer, K. and Pires, M. P. and Vieira, G. S. and Villas-B{\^o}as, J. M.: Intraband Auger effect in InAs/InGaAlAs/InP quantum dot structures. In: Appl. Phys. Lett., 93, 2008, 052103
2008M. Kaniber, A. Laucht, A. Neumann, J. M. Villas-Boas, M. Bichler, M.-C. Amann, J. J. Finley: Investigation of the nonresonant dot-cavity coupling in two-dimensional photonic crystal nanocavities. In: Physical Review B, 2008, 161303-1-161303-4
2008Kaniber, M. and Laucht, A. and Neumann, A. and Villas-B{\^o}as, J. M. and Bichler, M. and Amann, M.-C. and Finley, J. J.: Investigation of the nonresonant dot-cavity coupling in two-dimensional photonic crystal nanocavities. In: Phys. Rev. B, 77, 2008, 161303
2008Ngo, Anh T. and Villas-B{\^o}as, J. M. and Ulloa, Sergio E.: Spin polarization control via magnetic barriers and spin-orbit effects. In: Phys. Rev. B, 78, 2008, 245310
2007Mendoza-Alvarez, Julio G. and Pires, Mauricio P. and Landi, Sandra M. and Souza, Patricia L. and Villas-B{\^o}as, Jose M. and Studart, Nelson: Photoluminescent properties of InAs quantum dots grown by MOVPE on an InxAlyGa1-x-yAs layer and their dependence on the layer stoichiometry. In: AIP Conference Proceedings, 893, 2007, 943--944
2007Gebhard, T. and Souza, P. L. and Schrey, F. F. and Strasser, G. and Unterrainer, K. and Pires, M. P. and Landi, S. M. and Villas-B{\^o}as, J. M. and Studart, N.: Polarization dependence of intraband transitions in QDIPs. In: Phys. Status Solidi C, 4, 2007, 304--306
2007Souza, P. L. and Lopes, A. J. and Gebhard, T. and Unterrainer, K. and Pires, M. P. and Villas-B{\^o}as, J. M. and Vieira, G. S. and Guimar{\~a}es, P. S. S. and Studart, Nelson: Quantum dot structures grown on Al containing quaternary material for infrared photodetection beyond 10$\mu$m. In: Appl. Phys. Lett., 90, 2007, 173510
2007Vieira, G. S. and Feu, W. H. M. and Villas-B{\^o}as, J. M. and Guimar{\~a}es, P. S. S. and Studart, Nelson: Resonant tunneling between thermal excited states tuned by a magnetic field. In: Phys. Rev. B, 75, 2007, 193406
2007Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Govorov, A. O.: Spin polarized photocurrent from quantum dots. In: Phys. Rev. B, 75, 2007, 155334
2007Dias da Silva, Luis G. G. V. and Villas-B{\^o}as, Jos{\'e} M. and Ulloa, Sergio E.: Tunneling and optical control in quantum ring molecules. In: Phys. Rev. B, 76, 2007, 155306
2006Mendoza-Alvarez, J. G. and Pires, M. P. and Landi, S. M. and Lopes, A. S. and Souza, P. L. and Villas-B{\^o}as, J. M. and Studart, N.: Influence of stoichiometry on the luminescent properties of InAs quantum dots grown on a InxGa1-xAs/InP heterostructure. In: Physica E, 32, 2006, 85--88
2006Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Govorov, Alexander O.: Photocurrent and spin manipulation in quantum dots. In: Physica E, 34, 2006, 333--335
2006Ngo, Anh T. and Villas-B{\^o}as, J. M. and Ulloa, S. E.: Spin polarization control in two dimensional electron systems: Enhanced Zeeman splitting and spin-orbit interaction effects. 2006 6th IEEE Conference on Nanotechnology (IEEE-NANO 2006). 2006. 838--841
2005Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Studart, Nelson: Coherent Control of Tunneling in a Quantum Dot Array. In: AIP Conference Proceedings, 772, 2005, 1445--1446
2005Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Govorov, Alexander O.: Damping of coherent oscillations in a quantum dot photodiode. In: Physica E, 26, 2005, 337--341
2005Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Govorov, A. O.: Decoherence of Rabi Oscillations in a Single Quantum Dot. In: Phys. Rev. Lett., 94, 2005, 057404
2005Vieira, G. S. and Villas-B{\^o}as, J. M. and Guimar{\~a}es, P. S. S. and Studart, N. and Kono, J. and Allen, S. J. and Campman, K. L. and Gossard, A. C.: Intersubband Tunneling without Intrasubband Relaxation in Multi-quantum Wells. In: AIP Conf. Proc., 772, 2005, 1143--1144
2005Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Govorov, Alexander O.: Photocurrent oscillations in a quantum dot photodiode. In: Solid State Commun., 134, 2005, 33--35
2005Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Govorov, Alexander O.: Spin polarized photocurrent from a single quantum dot. In: AIP Conf. Proc., 772, 2005, 683--684
2004Villas-B{\^o}as, J. M. and Govorov, A. O. and Ulloa, Sergio E.: Coherent control of tunneling in a quantum dot molecule. In: Phys. Rev. B, 69, 2004, 125342
2004Vieira, G. S. and Villas-B{\^o}as, J. M. and Guimar{\~a}es, P. S. S. and Studart, Nelson and Kono, J. and Allen, S. J. and Campman, K. L. and Gossard, A. C.: Magnetically tuned resonant photon-assisted tunneling. In: Phys. Rev. B, 70, 2004, 035316
2004Villas-B{\^o}as, J. M. and Ulloa, Sergio E. and Studart, Nelson: Selective coherent destruction of tunneling in a quantum-dot array. In: Phys. Rev. B, 70, 2004, 041302
2003Villas-B{\^o}as, J. M. and Studart, Nelson and Rivera, P. H. and Zhang, Wei and Ulloa, Sergio E.: Electron dynamics in quantum wells under tilted magnetic field and intense AC field. In: Physica E, 18, 2003, 157--158
2002Villas-B{\^o}as, J. M. and Zhang, Wei and Ulloa, Sergio E. and Rivera, P. H. and Studart, Nelson: Nonperturbative electron dynamics in crossed fields. In: Phys. Rev. B, 66, 2002, 085325