New Trends in Superconductivity

Nobuyuki Yoshikawa

In superconductors, the phase of electrons is a well-defined macroscopic variable. Recently many new devices and circuits were proposed and researched based on the particular control of the phase in superconductors, which include ferromagnetic Josephson devices, coherent quantum phase slip devices and adiabatic or reversible superconducting circuits. In this paper we will introduce resent trends and new developments in the research field named “Phase Engineering”.

Marric Stephens

Marco Colangelo

J. R. Schrieffer

Francesco P. Venza, Marco Colangelo

Superconducting nanowire single-photon detectors (SNSPDs) are the leading technology for photon counting at near-infrared wavelengths, offering unparalleled performance across multiple metrics and enabling diverse applications. Two decades after their introduction, SNSPDs have made significant progress and reached a mature stage of development. However, the requirements of new, demanding applications and the push to democratize this technology open up new opportunities for further advancements. In this perspective, we provide an introduction to SNSPD technology, an overview of current research trends, and insights into future directions in this field.