BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20190331T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20181028T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260405T223639Z
UID:5c3cd2a129e2e302779724@ist.ac.at
DTSTART:20190118T110000
DTEND:20190118T120000
DESCRIPTION:hosted by Georgios Katsaros\nAbstract: Semiconductor qubits rel
 y on the control of charge and spin degrees of freedom of electrons or hol
 es confined in quantum dots (QDs). Typically\, semiconductor qubit-qubit c
 oupling is short range\, effectively limiting qubit distance to the spatia
 l extent of the wavefunction of the confined particle (a few hundred nanom
 eters). This is a significant constraint towards scaling of the QD-based a
 rchitectures to realize dense 1D or 2D arrays of QDs.Inspired by technique
 s originally developed for circuit QED\, we recently demonstrated the stro
 ng coupling of individual electrons [1\,2] confined in GaAs quantum dots t
 o individual microwave photons\, making use of the enhanced electric compo
 nent of the vacuum fluctuations of a resonator with impedance beyond the t
 ypical 50 Ohm of standard coplanar waveguides\, realized by cascading Jose
 phson junctions. With this hybrid technology\, we recently realized a proo
 f of concept experiment\, where the coupling between a transmon and a doub
 le QD (DQD) is mediated by virtual microwave photon excitations in a high 
 impedance SQUID array resonator\, which acts as a quantum bus enabling lon
 g-range coupling between dissimilar qubits [3]. Similarly\, we achieved co
 herent coupling between two DQD charge qubits separated by approximately 5
 0 um [4]. In the dispersive regime\, we spectroscopically observed qubit-q
 ubit coupling as an avoided-crossing in the energy spectrum of the DQD cha
 rge qubits. The methods and techniques developed in this work are transfer
 able to QD devices based on other material systems and can be beneficial f
 or spin based hybrid systems [5].[1] A. Stockklauser*\, P. Scarlino*\, et 
 al.\, Phys. Rev. X 7\, 011030 (2017).[2] P. Scarlino*\, D. J. van Woerkom*
 \, et al.\, arXiv:1711.01906.[3] P. Scarlino*\, D. J. van Woerkom*\, et al
 .\, arXiv:1806.10039.[4] D. J. van Woerkom*\, P. Scarlino*\, et al.\, Phys
 . Rev. X 8\, 041018 (2018).[5] A. Landig*\, J. Koski*\, et al.\, Nature 56
 0\, 179-184 (2018).
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:gkatsaro@ist.ac.at
SUMMARY:Circuit Quantum Electrodynamics with superconductor-semiconductor h
 ybrid systems
URL:https://talks-calendar.ista.ac.at/events/1760
END:VEVENT
END:VCALENDAR