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DTSTAMP:20260406T074819Z
UID:662116a229119888425619@ist.ac.at
DTSTART:20240429T100000
DTEND:20240429T110000
DESCRIPTION:Speaker: Oleg Shvetsov\nhosted by Anton Bubis (Andrew Higginbot
 ham)\nAbstract: Josephson junctions in Al/InAs nanowires host Andreev boun
 d states[1] (ABSs) and can be considered as a platform for realization of 
 gate-tunable Andreev qubits[2-4]. An acute challenge of such architecture 
 is to improve the coupling between ABSs and a microwave resonator. Here\, 
 we report microwave characterization of an Al/InAs nanowire weak link embe
 dded in a superconducting loop with a lumped-element resonator patterned f
 rom a thin NbTiN film with high kinetic inductance. We demonstrate that ou
 r approach offers a compact geometry\, a high resonator impedance above 12
  kOhm and remarkably large coupling rates between ABSs and the resonator m
 ode reaching the value of 1.2 GHz. This result provides a basis for explor
 ation of strongly correlated light-matter states in cQED.References[1] A. 
 Furusaki and M. Tsukada\, Phys. Rev. B 43\, 10164 (1991).[2] A. Zazunov et
  al\, Phys. Rev. Lett. 90\, 087003 (2003).[3] M. Hays et al\, Phys. Rev. L
 ett. 121\, 047001 (2018)[4] C. Metzger et al\, Phys. Rev. Res. 3\, 013036 
 (2021).
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Oleg Shvetsov: Ultrastrong coupling between Andreev bound states an
 d a high impedance lumped-element resonator
URL:https://talks-calendar.ista.ac.at/events/4927
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