Janos Asboth

Janos K. Asboth

Associate Professor ("Egyetemi docens")
Department of Theoretical Physics, Budapest University for Technology and Economics,
Research Fellow ("Tudomanyos fomunkatars")
Department of Quantum Optics and Quantum Information, Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Budapest, Hungary

Researcher ID: A-6050-2012

Contact

office: Building 1, office 125
email: asboth.janos@wigner.hu
telephone: +36 1 392 2222/1264

postal address:
Janos Asboth
Department of Quantum Optics and Quantum Information
Wigner FK SZFI
Budapest P.O. Box 49
Hungary

Book: Introduction to Topological Insulators

Topological Insulators

A Short Course on Topological Insulators: Band-structure topology and edge states in one and two dimensions (Springer, Lecture Notes in Physics, 919 (2016), http://arxiv.org/abs/1509.02295).
A list of errors in the print edition.

Research

  • Topological phases in quantum walks
Grants
  • 2017-2021: PI of NKFIH Grant, "From topologically protected states to topological quantum computation" (100kEUR)
  • 2017-2021: Scienctific secretary of the NKFIH "National Quantum Technology Program" grant (10MEUR)

Teaching

2019/2020
Topological Insulators (with Andras Palyi and Laszlo Oroszlany), Physics MSc and PhD students at Budapest University of Technology and Economics (BME) and Eotvos University
Modern Physics for Chemical Engineers at BME

2017/2018
Topological Insulators (with Andras Palyi and Laszlo Oroszlany), Physics MSc and PhD students at Eotvos University
Quantum Optics, Physics MSc and PhD students at BME

2015/2016

Topological Insulators (with Andras Palyi and Laszlo Oroszlany), Physics MSc and PhD students at Eotvos University
Cavity QED, Physics MSc and PhD students at Eotvos University

2013/2014

Topological Insulators (with Andras Palyi and Laszlo Oroszlany), Physics MSc and PhD students at Eotvos University
Cavity QED (with Peter Domokos), Physics MSc and PhD students at Eotvos University

2012/2013

Topological Insulators (with Andras Palyi and Laszlo Oroszlany), Physics MSc and PhD students at Eotvos University
Cavity QED (with Peter Domokos), Physics MSc and PhD students at Eotvos University

2011/2012

Cavity QED (with Peter Domokos), Physics MSc and PhD students at Eotvos University

Experience, Education

  • 2019.07 -
  • Associate professor, Dept of Theoretical Physics of Budapest University of Engineering and Economics
  • 2010.09 -
  • Research fellow, Wigner Research Centre, Budapest, Dept of Quantum Optics and Quantum Information
  • 2008.09-2010.08    
  • Postdoctoral researcher, Lorentz Institute, Leiden, group of Carlo Beenakker
  • 2008
  • PhD, Physics, University of Innsbruck
  • 2003.09-2008.05
  • PhD student, University of Innsbruck (supervisors: H. Ritsch and P. Domokos)
  • 2003
  • Diploma, Physics, Eotvos University, Budapest
  • 2001
  • Erasmus Student, University of Tours, Dynamics of vortices in type-II superconductors with an ordered array of pinning sites, tutor J-C Soret
  • 2000
  • Summer Student, CERN, data analysis at NA49

Publications

Find the list of my publications on Google Scholar, and in the Database of the Hungarian Academy of Science.

Recent talks

Awards

  • 2017: Pal Gombas Award (from the Hungarian Physical Society)
  • 2014 Sept - : Janos Bolyai Grant
  • 2013 Jan - 2014 Apr: Zoltan Magyary Postdoctoral Grant
  • 2011: Junior Prima Award

Interest

Topological Quantum Computing
Introductory talks from youtube: by John Preskill, Steve Simon, Nick Bonesteel

Conferences

2019 Aug 21-24: Magyar Fizikus Vandorgyules, Sopron, Hungary.
talk: Topológia és Anderson-lokalizáció kapcsolata periodikusan gerjesztett rendszerekben
2019 April 21-26: Quantum Walks and Information Tasks, Banff, Canada
invited talk: Topological phases of quantum walks and how they can be detected
2018 May 28 - Jun 1: Search and Problem Solving by Random Walks: Drunkards vs Quantum Computers, 672. WE-Heraeus-Seminar, Bad Honnef, Germany
invited talk: Recurrence time in iterated open quantum dynamics
2018 March 5-9: APS March Meeting, Los Angeles, USA
talk: Measuring topological invariants using losses
2018 March 3-4: Workshop of Quantum Simulation and Quantum Walks, Orange, California, USA
invited talk: Topological phases of quantum walks and how they can be detected
2016 Nov 17-20: Workshop of Quantum Simulation and Quantum Walks, Prague, Czech Republic.
talk: The Hofstadter butterfly takes flight - Spectral flow and quasienergy winding in quantum walks
2016 Aug 24-27: Magyar Fizikus Vandorgyules, Szeged, Hungary.
poster: Energy flow and winding of energy bands in the Hofstadter butterfly of Chern and Floquet insulators
2016 July 24-29: New Trends in Topological Insulators 2016, Wurzburg, Germany.
poster: Topological Phases and Decoherence in 2-dimensional Quantum Walks
2016 Apr 8: Statisztikus Fizikai Nap, Budapest, Hungary.
invited talk: Ha csavar van a történetben, a végén ott a csattanó: A topologikus szigetelők fizikája
2015 Nov 16 - 18: Workshop of Quantum Simulation and Quantum Walks, Yokohama, Japan.
talk: Quantum walks vs Periodically Driven Hamiltonians: topological classification
2014 Nov 12 - 14: Topological and Dirac matter: from modeling to imaging, Bordeaux, France.
poster: Chiral Symmetry and End States in Periodically Driven 1D Systems
2014 July 7 - July 10: New Trends in Topological Insulators, Berlin, Germany.
poster: Chiral Symmetry and End States in Periodically Driven 1D Systems
2013 Nov 11 - 15: Conference on Quantum Simulations and Quantum Walks, Pisa, Italy.
talk: Chiral Symmetry and Topologically Protected States in Quantum Walks
2013 July 29 - Aug 1: WE-Heraeus-Seminar: Classical and Quantum Transport in Complex Networks, Bad Honnef, Germany.
talk: Edge states and efficient transport in a 2-dimensional Quantum Walk
2012 Aug 14-26: The 6th Windsor Summer School: Low-Dimensional Materials, Strong Correlations, and Quantum Technologies, Windsor, UK.
poster: Topological Phases and Bound States in the Discrete Time Quantum Walk
2012 July 2-6: Majorana Fermions in Condensed Matter, Leiden, Netherlands.
2012 May 3-7: Workshop on the dynamics and asymptotics in the Dicke model and quantum networks, Matrahaza, Hungary.
talk: Topological phases and edge states in the 1D discrete-time quantum walk
2012 March 18-22: Interdisciplinary Workshop on Topological States of Matter, Freiburg, Germany.
talk: Topological phases and edge states in quantum walks
2010 Jan 19-20: Annual Meeting of the Dutch Physical Society, Veldhoven, Netherlands.
poster: Pseudodiffusive transmission of nodal fermions through a clean d-wave superconductor
2009 July 6-24: ICTP Summer College on Non-Equilibrium Physics from Classical to Quantum Low Dimensional Systems, Trieste, Italy
2009 Jan 20-21: Annual Meeting of the Dutch Physical Society, Veldhoven, Netherlands
2007 Aug 6-18: The 4th Windsor Summer School on Condensed Matter Theory:
   Quantum Transport and Dynamics in Nanostructures
, Windsor, UK
poster: Asymmetrically pumped optical lattices: collective excitations and instability
2007 March 19-23: DPG Fruhjahrstagung des Arbeitskreises Atome, Molekule, Quantenoptik und Plasmen, Düsseldorf, Germany
talk: Asymmetrically pumped optical lattices: collective excitations and instability
2007 Feb 4-9: ESF Research Conference on Trends in Optical Micromanipulation, Obergurgl, Austria
poster: Dynamical instability of an opticaly bound system due to unbalanced pumping
2006 July 16-21: 20th International Conference on Atomic Physics, Innsbruck, Austria
poster: Many atoms in a cavity: trapping through self-organization
2006 June 13-15: Quantum Information Processing Workshop, Pecs, Hungary
talk: Quantifying the Nonclassicality of Quantum States of Light
2006 Feb 26-March 3: Achievements and Perspectives of Cold Molecules, Les Houches, France
2005 Sept 27-29: 55th Annual Meeting of the Austrian Physical Society (OEPG), Vienna, Austria
talk: Many atoms in a cavity: trapping through self-organization
2005 May 20-26: Quantum Physics of Nature, Vienna, Austria
poster: A computable measure of nonclassicality for light
2005 May 2-6: 9th International Conference on Squeezed States and Uncertainty Relations, Besancon, France
talk: A computable measure of nonclassicality for light
2004 Sept 21-24: Workshop on Microcavities in Quantum Optics, Ringberg, Germany
poster: Dynamics of two atoms in a high-Q optical cavity
2004 July 18-20: 11th Central European Workshop on Quantum Optics, Trieste, Italy
talk: A computable measure of nonclassicality for light
2004 March 13-17: 10th Young Atom Opticians meeting, Innsbruck, Austria
poster: Correlated motion of two atoms in a cavity
2004 Feb 28-March 6: 42nd Winter School in Theoretical Physics:
Quantum Coherence in Matter: From Quarks to Solids, Schladming, Austria
2003 Dec: SFB "Control and Measurement of Coherent Quantum Systems" meeting, Innsbruck, Austria
talk: Correlated motion of two atoms in a cavity
2003 Oct: Hungarian Symposium on Quantum Electronics, Budapest, Hungary
poster: Entanglement and Decoherence of Coherent-state Quantum Bits
2003 Sept: EURESCO Conference on Quantum Optics and Nanotechnology, Granada, Spain
poster: Correlated motion of two atoms in a cavity
2003 April: OTDK - Conference of Students in Research, Miskolc, Hungary
talk: Collective Motional States of Vortices in Superconductors with a Lattice of Pinning Sites
2003 April: 10th Central European Workshop on Quantum Optics, Rostock, Germany
talk: Decoherence of entangled coherent states: a qubit description
2002 July: Wigner Centennial Conference, Pécs, Hungary
organizer, talk: Two-mode Schrödinger cats, entanglement and teleportation
2002 May: 9th Central European Workshop on Quantum Optics, Szeged, Hungary
coauthor of talk held by prof. József Janszky
2001 Sept.: CNRS GDR 2284 - Disordered Systems, St Flour, France
poster: Dynamics of vortices in superconductors with an ordered array of pinning sites
2001 April: OTDK - Conference of Students in Research, Pécs, Hungary
talk: Computer Study of Sympatric Speciation in a 2-dimensional Strategy Space (with András Vukics)
1999 Aug: International Conference of Physics Students, Helsinki
talk: Biological Evolution with Feedback