Quantum superinductor with tunable nonlinearity
| Autor: | Michael Gershenson, Ivan Sadovskyy, Matthew Bell, A. Yu. Kitaev, Lev Ioffe |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Josephson effect
Physics Flux qubit Condensed matter physics Condensed Matter - Superconductivity FOS: Physical sciences General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Kinetic inductance Superconductivity (cond-mat.supr-con) Inductance Quantum mechanics Qubit 0103 physical sciences Bloch oscillations 010306 general physics 0210 nano-technology Quantum Quantum computer |
| Zdroj: | Physical review letters. 109(13) |
| ISSN: | 1079-7114 |
| Popis: | We report on the realization of a superinductor, a dissipationless element whose microwave impedance greatly exceeds the resistance quantum. 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 microsecond. 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. text 4 pages, supplementary materials 6 pages |
| Databáze: | OpenAIRE |
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