Janos K. Asboth
Research Fellow ("Tudomanyos fomunkatars")
Department of Quantum Optics and
Quantum Information,
Institute for Solid State Physics
and Optics,
Wigner Research Centre for Physics
of the Hungarian Academy of Sciences, Budapest, Hungary
Researcher ID: A60502012
Contact
office: Building 1, office 125
email: janos.asboth@wigner.mta.hu
telephone: +36 1 392 2222/1264
postal address:
Janos Asboth
Department of Quantum Optics and Quantum Information
MTA Wigner FK SZFI
Budapest P.O. Box 49
Hungary
Research
 Topological phases in quantum walks
Teaching
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
 2010.09 

Research fellow, Wigner Research Centre, Budapest, Dept of Quantum Optics and Quantum Information, group of Peter Domokos

 2008.092010.08

Postdoctoral researcher, Lorentz Institute, Leiden, group of Carlo Beenakker

 2008

PhD, Physics, University of Innsbruck 
 2003.092008.05

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
typeII superconductors with an ordered array of pinning sites,
tutor JC 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.
My most important publications:

Janos K. Asboth, Laszlo Oroszlany, Andras Palyi
A Short Course on Topological Insulators: Bandstructure topology and edge states in one and two dimensions
submitted to Lecture Notes in Physics

T. Rakovszky and J. K. Asboth
Localization, delocalization, and topological phase transitions in the onedimensional splitstep quantum walk
submitted to Phys. Rev. A

J. M. Edge and J. K. Asboth
Localisation, delocalisation, and topological transitions in disordered 2D quantum walks
Phys. Rev. B 91, 104202 (2015)

J. K. Asboth, B. Tarasinski, P. Delplace
Chiral symmetry and bulkboundary correspondence in periodically driven onedimensional systems
Phys. Rev. B 90, 125143 (2014)

Asboth JK,
Symmetries, topological phases, and bound states in the
onedimensional quantum walk
Phys. Rev. B 86, 195414 (2012)

Asboth JK, Akhmerov AR, Berceanu AC, Beenakker CWJ,
Pseudodiffusive transmission of nodal Dirac fermions through a clean
dwave superconductor
Phys. Rev. B 80, 224517 (2009)

Asboth JK, Ritsch H, Domokos P,
Collective excitations and instability of an optical lattice due
to unbalanced pumping
Phys. Rev. Lett. 98, 203008 (2007)

Asboth JK, Domokos P, Ritsch H, Vukics A,
Selforganization of atoms in a cavity field: Threshold,
bistability, and scaling laws
Phys. Rev. A 72, 053417 (2005)

Asboth JK, Calsamiglia J, Ritsch H,
Computable measure of nonclassicality for light
Phys. Rev. Lett. 94, 173602 (2005)

Vukics A, Asboth J, Meszena G,
Speciation in multidimensional evolutionary space
Phys. Rev. E 68, 041903 (2003)
Awards
 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
2016 Aug 2427: 
Magyar Fizikus Vandorgyules,
Szeged, Hungary.
poster: Energy flow and winding of energy bands in the Hofstadter butterfly of Chern and Floquet insulators 
2016 July 2429: 
New Trends in Topological Insulators 2016,
Wurzburg, Germany.
poster: Topological Phases and Decoherence in 2dimensional 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: 
WEHeraeusSeminar: Classical and Quantum Transport in Complex Networks, Bad Honnef, Germany.
talk: Edge states and efficient transport in a 2dimensional Quantum Walk 
2012 Aug 1426: 
The 6th Windsor Summer School: LowDimensional Materials, Strong Correlations, and Quantum Technologies, Windsor, UK.
poster: Topological Phases and Bound States in the Discrete Time Quantum Walk 
2012 July 26:  Majorana Fermions in Condensed Matter, Leiden, Netherlands.

2012 May 37: 
Workshop on the dynamics and asymptotics in the Dicke model and quantum networks, Matrahaza, Hungary.
talk: Topological phases and edge states in the 1D discretetime quantum walk

2012 March 1822: 
Interdisciplinary Workshop on Topological States of Matter, Freiburg, Germany.
talk: Topological phases and edge states in quantum walks

2010 Jan 1920: 
Annual Meeting of the Dutch Physical Society, Veldhoven, Netherlands.
poster: Pseudodiffusive transmission of nodal fermions through a clean dwave superconductor

2009 July 624: 
ICTP Summer College on NonEquilibrium Physics from Classical to Quantum Low Dimensional Systems, Trieste, Italy 
2009 Jan 2021: 
Annual Meeting of the Dutch Physical Society, Veldhoven, Netherlands 
2007 Aug 618: 
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 1923: 
DPG Fruhjahrstagung des Arbeitskreises Atome, Molekule, Quantenoptik
und Plasmen, Düsseldorf, Germany
talk: Asymmetrically pumped optical lattices: collective excitations and
instability 
2007 Feb 49: 
ESF Research Conference on Trends in Optical Micromanipulation, Obergurgl, Austria
poster: Dynamical instability of an opticaly bound system due to unbalanced pumping 
2006 July 1621: 
20th International Conference on Atomic Physics, Innsbruck, Austria
poster: Many atoms in a cavity: trapping through
selforganization 
2006 June 1315: 
Quantum Information Processing Workshop, Pecs, Hungary
talk: Quantifying the Nonclassicality of Quantum States of Light 
2006 Feb 26March 3: 
Achievements and Perspectives of Cold Molecules, Les Houches, France

2005 Sept 2729: 
55th Annual Meeting of the Austrian Physical Society
(OEPG), Vienna, Austria
talk: Many atoms in a cavity: trapping through
selforganization 
2005 May 2026: 
Quantum Physics of Nature,
Vienna, Austria
poster: A computable measure of nonclassicality for light 
2005 May 26: 
9th International Conference on Squeezed States and Uncertainty Relations, Besancon, France
talk: A computable measure of nonclassicality for light 
2004 Sept 2124: 
Workshop on Microcavities in Quantum Optics, Ringberg, Germany
poster: Dynamics of two atoms in a highQ optical cavity 
2004 July 1820: 
11th Central European Workshop on Quantum Optics, Trieste, Italy
talk: A computable measure of nonclassicality for light 
2004 March 1317: 
10th Young Atom Opticians meeting, Innsbruck, Austria
poster: Correlated motion of two atoms in a cavity 
2004 Feb 28March 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 Coherentstate 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: Twomode 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 2dimensional Strategy Space (with András Vukics) 
1999 Aug: 
International Conference of Physics Students, Helsinki
talk: Biological Evolution with Feedback 
