电压控制合成混合约瑟夫森结电路中的高次谐波

IF 8.1 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2024-10-31 DOI:10.1103/physrevlett.133.186303

L. Banszerus, W. Marshall, C. W. Andersson, T. Lindemann, M. J. Manfra, C. M. Marcus, S. Vaitiekėnas

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引用次数: 0

摘要

我们报告了两个串联的电压控制半导体-超导体混合约瑟夫森结（JJ）的电流相位关系测量结果。这两个混合结的行为类似于单模 JJ，其有效透明度由两个结的约瑟夫森耦合强度比决定。约瑟夫森耦合的栅极电压控制（通过开关电流测量）允许对谐波内容进行调谐，从正弦（用于非对称调谐）到高度非正弦（用于对称调谐）。实验观察到的可调谐波含量与基于两个串联的传统（正弦）JJ 的模型一致。

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Voltage-Controlled Synthesis of Higher Harmonics in Hybrid Josephson Junction Circuits

We report measurements of the current-phase relation of two voltage-controlled semiconductor-superconductor hybrid Josephson junctions (JJs) in series. The two hybrid junctions behave similar to a single-mode JJ with effective transparency determined by the ratio of Josephson coupling strengths of the two junctions. Gate-voltage control of Josephson coupling (measured from switching currents) allows tuning of the harmonic content from sinusoidal, for asymmetric tuning, to highly nonsinusoidal, for symmetric tuning. The experimentally observed tunable harmonic content agrees with a model based on two conventional (sinusoidal) JJs in series.

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks