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UID:UW-Physics-Event-9333
DTSTART:20250804T150000Z
DTEND:20250804T170000Z
DTSTAMP:20260413T084140Z
LAST-MODIFIED:20250714T174040Z
LOCATION:5310 Chamberlin
SUMMARY:Scaling Technologies for Si/SiGe Spin Qubits\, Thesis Defense\
 , Michael Wolfe\, Physics PhD Graduate Student
DESCRIPTION:In my talk\, I will present several experiments that addre
 ss scalability challenges ahead for Si/SiGe quantum processors. Silico
 n qubits are uniquely positioned among quantum computing platforms due
  to their exceptionally small feature sizes and compatibility with the
  mature semiconductor industry infrastructure. However\, the path to l
 arge-scale quantum computation capable of transformative societal impa
 ct is fraught with challenges. Chief among these are achieving device 
 uniformity\, establishing scalable connectivity to control electronics
 \, enabling rapid initialization compatible with error correction\, an
 d maintaining qubit control at elevated temperatures.    This thesis f
 irst addresses device uniformity by demonstrating a novel technique to
  control density of charge traps in the Si/SiGe heterostructure. Next\
 , connectivity is explored with an on-chip cryogenic multiplexer which
  exponentially reduces the number of chip-to-fridge readout connection
 s.    Finally\, experiments a on Intel Tunnel falls device are present
 ed: (1) a new technique to quickly initialize spin qubits out of a lat
 ched state\, and (2) a novel readout method that opens the door for hi
 gh-temperature control of Si/SiGe qubits. Put together\, these advance
 s move Si/SiGe quantum dot qubits closer towards large-scale quantum c
 omputation.
URL:https://www.physics.wisc.edu/events/?id=9333
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