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Voltage-Controlled Superconducting Quantum Bus
- Source :
- Phys. Rev. B 99, 085434 (2019)
- Publication Year :
- 2018
-
Abstract
- We demonstrate the ability of an epitaxial semiconductor-superconductor nanowire to serve as a field-effect switch to tune a superconducting cavity. Two superconducting gatemon qubits are coupled to the cavity, which acts as a quantum bus. Using a gate voltage to control the superconducting switch yields up to a factor of 8 change in qubit-qubit coupling between the on and off states without detrimental effect on qubit coherence. High-bandwidth operation of the coupling switch on nanosecond timescales degrades qubit coherence.
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 99, 085434 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1802.01327
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.99.085434