Quantum Superinductor with Tunable Nonlinearity
Abstract
We report on the realization of a superinductor, a dissipationless element whose microwave impedance greatly exceeds the resistance quantum R_Q. The design of the superinductor, implemented as a ladder of nanoscale Josephson junctions, enables tuning of the inductance and its nonlinearity by a weak magnetic field. The Rabi decay time of the superinductor-based qubit exceeds 1 μs. The high kinetic inductance and strong nonlinearity offer new types of functionality, including the development of qubits protected from both flux and charge noises, fault tolerant quantum computing, and high-impedance isolation for electrical current standards based on Bloch oscillations.
Additional Information
© 2012 American Physical Society. Received 6 July 2012; published 27 September 2012. We would like to thank V. Manucharyan and A. Zamolodchikov for helpful discussions. The work was supported by DARPA (HR0011-09-1-0009), NSF (DMR 1006265), and ARO (W911NF-09-1-0395).Attached Files
Published - PhysRevLett.109.137003.pdf
Supplemental Material - README.TXT
Supplemental Material - Supplement_v9.41.pdf
Files
Additional details
- Eprint ID
- 35130
- Resolver ID
- CaltechAUTHORS:20121026-145953727
- HR0011-09-1-0009
- Defense Advanced Research Projects Agency (DARPA)
- DMR 1006265
- NSF
- W911NF-09-1-0395
- Army Research Office (ARO)
- Created
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2012-10-26Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field