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CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-8421
DTSTART:20231130T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T044339Z
LAST-MODIFIED:20231117T141524Z
LOCATION:5310 Chamberlin
SUMMARY:Coupling an Andreev spin qubit to a transmon\, R. G. Herb Cond
 ensed Matter Seminar\, Angela Kou\, UIUC
DESCRIPTION:While there are multiple platforms for implementing qubits
 \, no single type of qubit
\ncurrently excels at every task necessary 
 to build a quantum computer. Some platforms
\nare better-suited as qua
 ntum memories while others may be better for quantum
\noperations. Rec
 ently\, it has been suggested that building hybrid quantum systems tha
 t
\ncan harness the benefits of different platforms may be a useful mo
 del for a quantum
\ncomputer.
\n
\nIn this talk\, I will discuss the a
 dvantages and challenges associated with coupling
\nsuperconducting qu
 bits to semiconducting spin qubits. These two leading platforms
\nhave
  complementary benefits\; semiconducting spin qubits have long lifetim
 es but are
\ndifficult to couple over long distances while superconduc
 ting qubits can be coupled over
\nlong ranges but have shorter lifetim
 es. I will show our experimental work implementing
\nan Andreev spin q
 ubit (ASQ) and then coupling it to a superconducting transmon [1]. I
\
 nwill also discuss our work using a superconducting transmon to invest
 igate mesoscopic
\nsuperconducting phenomena such as the anomalous Jos
 ephson effect and the phase
\ndiagram of a superconducting quantum dot
  system [2\,3].
\n
\n[1] M. Pita-Vidal et al.\, Nature Physics\, 19\, 
 1110 (2023)
\n[2] A. Bargerbos et al.\, PRX Quantum 3\, 030311 (2022)

 \n[3] A. Bargerbos et al.\, PRL 131\, 097001 (2023)
URL:https://www.physics.wisc.edu/events/?id=8421
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