| Autor: |
Strickland, William M., Baker, Lukas J., Lee, Jaewoo, Dindial, Krishna, Elfeky, Bassel Heiba, Strohbeen, Patrick J., Hatefipour, Mehdi, Yu, Peng, Levy, Ido, Issokson, Jacob, Manucharyan, Vladimir E., Shabani, Javad |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Research 6, 023094 (2024) |
| Druh dokumentu: |
Working Paper |
| Popis: |
The tunnelling of cooper pairs across a Josephson junction (JJ) allow for the nonlinear inductance necessary to construct superconducting qubits, amplifiers, and various other quantum circuits. An alternative approach using hybrid superconductor-semiconductor JJs can enable superconducting qubit architectures with all electric control. Here we present continuous-wave and time-domain characterization of gatemon qubits and coplanar waveguide resonators based on an InAs two-dimensional electron gas. We show that the qubit undergoes a vacuum Rabi splitting with a readout cavity and we drive coherent Rabi oscillations between the qubit ground and first excited states. We measure qubit relaxation times to be $T_1 =$ 100 ns over a 1.5 GHz tunable band. We detail the loss mechanisms present in these materials through a systematic study of the quality factors of coplanar waveguide resonators. While various loss mechanisms are present in III-V gatemon circuits we detail future directions in enhancing the relaxation times of qubit devices on this platform. |
| Databáze: |
arXiv |
| Externí odkaz: |
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