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TZID:Europe/Vienna
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DTSTART:20190331T030000
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DTSTART:20191027T020000
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DTSTAMP:20260405T215717Z
UID:5cb995c946ec4862339318@ist.ac.at
DTSTART:20190506T100000
DTEND:20190506T110000
DESCRIPTION:Speaker: Suman Kundu\nhosted by Johannes Fink\nAbstract: Superc
 onducting quantum circuits are currently considered to be the most promisi
 ng architecture for building practical quantum computers. However\, effici
 ent control and measurement of multiple qubits is an important challenge t
 o build scalable superconducting quantum processors. Frequency multiplexed
  measurement is one technique to enable efficient use of resources and has
  been demonstrated in planar (2D) quantum circuits. In this talk\, I will 
 describe a frequency-multiplexed readout scheme in 3D cQED architecture to
  readout four transmon qubits.  I will present high fidelity (~ 98%) singl
 e-shot simultaneous readout of multiple qubits achieved using an impedance
  engineered broadband Josephson parametric amplifier (JPA). I will also pr
 esent data demonstrating simultaneous measurement of Rabi oscillations and
  quantum trajectories. I will then describe how this technique can be adap
 ted to readout tens of qubits and conclude by discussing the consequent ch
 allenges in multiplexer design and enhancing broadband JPA performance.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Suman Kundu: Multiplexed readout of four qubits in 3D circuit QED a
 rchitecture using a broadband Josephson Parametric Amplifier
URL:https://talks-calendar.ista.ac.at/events/1955
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