Nicolas Aparicio - Academia.edu (original) (raw)
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Indian Institute of Engineering Science and Technology, Shibpur
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Papers by Nicolas Aparicio
arXiv (Cornell University), May 22, 2024
In a Josephson junction, the current phase relation relates the phase variation of the supercondu... more In a Josephson junction, the current phase relation relates the phase variation of the superconducting order parameter, φ, between the two superconducting leads connected through a weak link, to the dissipationless current. This relation is the fingerprint of the junction. It is usually dominated by a sin(φ) harmonic, however its precise knowledge is necessary to design superconducting quantum circuits with tailored properties. Here, we directly measure the current phase relation of a superconducting quantum interference device made with gate-tunable graphene Josephson junctions and we show that it can behave as a sin(2φ) Josephson element, free of the traditionally dominant sin(φ) harmonic. Such element will be instrumental for the development of superconducting quantum bits protected from decoherence.
arXiv (Cornell University), May 22, 2024
In a Josephson junction, the current phase relation relates the phase variation of the supercondu... more In a Josephson junction, the current phase relation relates the phase variation of the superconducting order parameter, φ, between the two superconducting leads connected through a weak link, to the dissipationless current. This relation is the fingerprint of the junction. It is usually dominated by a sin(φ) harmonic, however its precise knowledge is necessary to design superconducting quantum circuits with tailored properties. Here, we directly measure the current phase relation of a superconducting quantum interference device made with gate-tunable graphene Josephson junctions and we show that it can behave as a sin(2φ) Josephson element, free of the traditionally dominant sin(φ) harmonic. Such element will be instrumental for the development of superconducting quantum bits protected from decoherence.