Time-domain characterization and correction of on-chip distortion of control pulses in a quantum processor
Abstract
We introduce Cryoscope, a method for sampling on-chip baseband pulses used to dynamically control qubit frequency in a quantum processor. We specifically use Cryoscope to measure the step response of the dedicated flux control lines of two-junction transmon qubits in circuit QED processors with the temporal resolution of the room-temperature arbitrary waveform generator producing the control pulses. As a first application, we iteratively improve this step response using optimized real-time digital filters to counter the linear-dynamical distortion in the control line, as needed for high-fidelity repeatable one- and two-qubit gates based on dynamical control of qubit frequency.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 03, 2020
- Source ID
- 10.1063/1.5133894
Entities
People
- Adriaan Rol
- B. M. Tarasinski
- C. C. Bultink
- F. K. Malinowski
- J. Sedivy
- L. Dicarlo
- Livio Ciorciaro
- N. Haandbaek
- R. E. Sagastizabal
- Y. Salathe
Organizations
- Delft University of Technology
- ETH Zurich
- Intel Corporation
- Office of the Director of National Intelligence