Back to Search
Start Over
Resolving Fock states near the Kerr-free point of a superconducting resonator
- Source :
- npj Quantum Information, Vol 9, Iss 1, Pp 1-11 (2023)
- Publication Year :
- 2023
- Publisher :
- Nature Portfolio, 2023.
-
Abstract
- Abstract We have designed a tunable nonlinear resonator terminated by a SNAIL (Superconducting Nonlinear Asymmetric Inductive eLement). Such a device possesses a Kerr-free point in which the external magnetic flux allows to suppress the Kerr interaction. We have excited photons near this Kerr-free point and characterized the device using a transmon qubit. The excitation spectrum of the qubit allows to observe photon-number-dependent frequency shifts about nine times larger than the qubit linewidth. Our study demonstrates a compact integrated platform for continuous-variable quantum processing that combines large couplings, considerable relaxation times and excellent control over the photon mode structure in the microwave domain.
- Subjects :
- Physics
QC1-999
Electronic computers. Computer science
QA75.5-76.95
Subjects
Details
- Language :
- English
- ISSN :
- 20566387
- Volume :
- 9
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- npj Quantum Information
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.5f89991205924032abcf110e7da2f584
- Document Type :
- article
- Full Text :
- https://doi.org/10.1038/s41534-023-00782-w