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arXiv · 2404.16276

Laguerre-Gaussian light induction of orbital currents and Kapitza stabilization in superconducting circuits

Hennadii Yerzhakov·Tien-Tien Yeh·Alexander Balatsky
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Abstract

We investigate the effects of a Laguerre-Gaussian (LG) beam on the superconducting state. We show that the vortex angular momentum of a LG beam affects the superconducting state and induces currents. The induction of the current by light is illustrated on a Josephson loop and SQUID devices. In particular, we establish that coupling a dc SQUID to the AC magnetic flux of a LG beam can stabilize pi phase in the SQUID. This can happen via developing a global or local minimum in the effective potential at pi. In the latter case, this happens via the Kapitza mechanism.

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Hennadii Yerzhakov, Tien-Tien Yeh, Alexander Balatsky. 2024-04-25. Laguerre-Gaussian light induction of orbital currents and Kapitza stabilization in superconducting circuits. https://arxiv.org/abs/2404.16276

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