Argonne Physics Colloquium: Tanya Roy, Fermilab
- When:
- Friday, December 15, 2023 11:00 am - 12:00 pm
- Where:
- Auditorium, Building 203, Argonne National Laboratory, 9700 S. Cass Ave., Lemont, IL 60439
- Speaker:
- Tanya Roy, Fermi National Accelerator Laboratory
- Title:
- Building qudit-based quantum computing architecture using superconducting radio-frequency cavities
- Description:
-
Superconducting radio frequency (SRF) cavities are excellent choices for storing quantum information as quantum d-level systems (qudits) due to their exceptionally long lifetimes and large accessible Hilbert spaces. A common strategy to manipulate the states of these linear cavities is to use a nonlinear element like a transmon. There are however several challenges to building a 3D SRF architecture while maintaining a seconds-long cavity lifetime. In this talk, we demonstrate the successful integration of superconducting qubits with single-cell Nb SRF cavities. We discuss the results obtained with different approaches like selective number-dependent arbitrary phase gates and echoed conditional displacement gates to prepare non-classical states. Finally, we discuss our strategies to improve the coherence times and extend the system for building a multi-qudit quantum processor.