A Caltech Library Service

Quantum Superinductor with Tunable Nonlinearity

Bell, M. T. and Sadovskyy, I. A. and Ioffe, L. B. and Kitaev, A. Yu. and Gershenson, M. E. (2012) Quantum Superinductor with Tunable Nonlinearity. Physical Review Letters, 109 (13). Art. No. 137003. ISSN 0031-9007. doi:10.1103/PhysRevLett.109.137003.

PDF - Published Version
See Usage Policy.

[img] Plain Text - Supplemental Material
See Usage Policy.

PDF - Supplemental Material
See Usage Policy.


Use this Persistent URL to link to this item:


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.

Item Type:Article
Related URLs:
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).
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)HR0011-09-1-0009
NSFDMR 1006265
Army Research Office (ARO)W911NF-09-1-0395
Issue or Number:13
Classification Code:PACS: 74.50.+r, 74.81.Fa, 85.25.Am
Record Number:CaltechAUTHORS:20121026-145953727
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35130
Deposited By: Tony Diaz
Deposited On:26 Oct 2012 23:37
Last Modified:09 Nov 2021 23:12

Repository Staff Only: item control page