BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20220327T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20221030T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260404T090651Z
UID:62149a3b3a9fc604206026@ist.ac.at
DTSTART:20220503T113000
DTEND:20220503T123000
DESCRIPTION:Speaker: Christian Urbina\nhosted by Georgios Katsaros\nAbstrac
 t: In a non-superconducting material linking two superconductors\, discret
 e quasiparticles states are formed as electrons and holes are transmuted i
 nto each other through successive Andreev reflection processes at both int
 erfaces. The energy of these Andreev bound states depends on the phase dif
 ference between the complex order parameters of the superconductors. As a 
 result\, such a weak link carries a supercurrent and behaves as an inducta
 nce that depends on the occupation of the Andreev states. I will review a 
 series of experiments performed on atomic-size contacts [1] and on semicon
 ducting nanowire weak links [2\,3\,4] relying on the techniques of circuit
  Quantum Electrodynamics\, which consist in probing a quantum circuit thro
 ugh a coupled resonator [5]. They reveal the rich physics of Andreev Bound
  States\, from the basics to the effects of spin-orbit coupling and of Cou
 lomb interactions.[1] Coherent manipulation of Andreev states in supercond
 ucting atomic contacts\,  C. Janvier\, L. Tosi\, L. Bretheau\, . . Girit\,
  M. Stern\, P. Bertet\, P. Joyez\, D. Vion\, D. Esteve\, M. F. Goffman\, H
 . Pothier\, and C. Urbina\, Science 349\, 1199 (2015). [2] Spin-Orbit Spli
 tting of Andreev States Revealed by Microwave Spectroscopy\, L. Tosi\, C. 
 Metzger\, M.?F. Goffman\, C. Urbina\, H. Pothier\, Sunghun Park\, A. Levy 
 Yeyati\, J. Nygrd\, and P. Krogstrup\, Phys. Rev. X 9\, 011010 (2019). [3]
  Circuit-QED with phase-biased Josephson weak links\, C. Metzger\, Sunghun
  Park\, L. Tosi\, C. Janvier\, A. A. Reynoso\, M. F. Goffman\, C. Urbina\,
  A. Levy Yeyati\, and H. Pothier\, Phys. Rev. Research 3\, 013036 (2021).[
 4] Signatures of interactions in the Andreev spectrum of nanowire Josephso
 n junctions\, F. J. Matute Caadas\, C. Metzger\, Sunghun Park\, L. Tosi\, 
 P. Krogstrup\, J. Nygrd\, M. F. Goffman\, C. Urbina\, H. Pothier\, A. Levy
  Yeyati\, https://arxiv.org/abs/2112.05625.[5] From Adiabatic to Dispersiv
 e Readout of Quantum Circuits\, Sunghun Park\, C. Metzger\, L. Tosi\, M.?F
 . Goffman\, C. Urbina\, H. Pothier\, and A. Levy Yeyati\, Phys. Rev. Lett.
  125\, 077701 (2020).
LOCATION:Heinzel Seminar Room / Office Bldg West (I21.EG.101)\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Christian Urbina: The exciting life of quasiparticles trapped betwe
 en superconductors
URL:https://talks-calendar.ista.ac.at/events/3542
END:VEVENT
END:VCALENDAR