| Autor: |
Mergenthaler, Matthias, Nersisyan, Ani, Patterson, Andrew, Esposito, Martina, Baumgartner, Andreas, Schönenberger, Christian, Briggs, G. Andrew D., Laird, Edward A., Leek, Peter J. |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. Applied 15, 064050 (2021) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevApplied.15.064050 |
| Popis: |
Hybrid circuit quantum electrodynamics (QED) involves the study of coherent quantum physics in solid state systems via their interactions with superconducting microwave circuits. Here we present an implementation of a hybrid superconducting qubit that employs a carbon nanotube as a Josephson junction. We realize the junction by contacting a carbon nanotube with a superconducting Pd/Al bi-layer, and implement voltage tunability of the qubit frequency using a local electrostatic gate. We demonstrate strong dispersive coupling to a coplanar waveguide resonator via observation of a resonator frequency shift dependent on applied gate voltage. We extract qubit parameters from spectroscopy using dispersive readout and find qubit relaxation and coherence times in the range of $10-200~\rm{ns}$. |
| Databáze: |
arXiv |
| Externí odkaz: |
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