Quantum phase slip interference device based on superconducting nanowire
arXiv:1109.3634 · doi:10.1103/PhysRevLett.108.097001
Abstract
We propose a transistor-like circuit including two serially connected segments of a narrow superconducting nanowire joint by a wider segment with a capacitively coupled gate in between. This circuit is made of amorphous NbSi film and embedded in a network of on-chip Cr microresistors ensuring a sufficiently high external electromagnetic impedance. Assuming a virtual regime of quantum phase slips (QPS)in two narrow segments of the wire, leading to quantum interference of voltages on these segments, this circuit is dual to the dc SQUID. Our samples demonstrated appreciable Coulomb blockade voltage (analog of critical current of the SQUIDs) and periodic modulation of this blockade by an electrostatic gate (analog of flux modulation in the SQUIDs). The model of this QPS transistor is discussed.
5 pages including 3 figures; in v2 the title was updated, typos were fixed and 4 references added
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Cited by in corpus (36)
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- Emergence of Quantum Phase-Slip Behaviour in Superconducting NbN Nanowires: DC Electrical Transport and Fabrication Technologies
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- Coherent dynamics in long fluxonium qubits
- Observation of giant two-level systems in a granular superconductor
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