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Approaching the Quantum Limit in Axion Detection at IBS-CAPP and IBS-DMAG

Sergey V. Uchaikin, Boris I. Ivanov, Arjan F. van Loo, Yasunobu Nakamura et al. • Physical Sciences Forum (2025)

We present the development of two complementary amplifier architectures for axion haloscope experiments, based on two types of Josephson Parametric Amplifiers (JPAs). The first employs a multi-chip module of flux-driven JPAs in a parallel–s...

DOAJ Open Access (DOAJ) DOI: 10.3390/psf2025011005

Effect of Duffing nonlinearity on squeezing in a classical parametric amplifier in the unstable regime

Tomoki KANDA, Hiroshi YABUNO • Mechanical Engineering Journal (2026)

In quantum information processing, control of quantum entanglement is of central importance, particularly for applications in quantum computing. One established method for generating entanglement is squeezing, which exploits the uncertainty...

DOAJ Open Access (DOAJ) DOI: 10.1299/mej.26-00260