Quantum thermodynamics with a single superconducting vortex
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2024-08-02
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en
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9
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Science Advances, Volume 10, issue 31, pp. 1-9
Abstract
We demonstrate complete control over dynamics of a single superconducting vortex in a nanostructure, which we coin the Single Vortex Box. Our device allows us to trap the vortex in a field-cooled aluminum nanosquare and expel it on demand with a nanosecond pulse of electrical current. Using the time-resolving nanothermometry we measure 4 · 10−19 joules as the amount of the dissipated heat in the elementary process of the single-vortex expulsion. Our experiment enlightens the thermodynamics of the absorption process in the superconducting nanowire single-photon detectors, in which vortices are perceived to be essential for a formation of a detectable hotspot. The demonstrated opportunity to manipulate a single superconducting vortex reliably in a confined geometry comprises a proof of concept of a nanoscale nonvolatile memory cell with subnanosecond write and read operations, which offers compatibility with quantum processors based either on superconducting qubits or on rapid single-flux quantum circuits.Description
| openaire: EC/H2020/824109/EU//EMP
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Foltyn, M, Norowski, K, Savin, A & Zgirski, M 2024, ' Quantum thermodynamics with a single superconducting vortex ', Science Advances, vol. 10, no. 31, eado4032, pp. 1-9 . https://doi.org/10.1126/sciadv.ado4032