We propose a quantum-circuit refrigerator (QCR) based on photon-assisted quasiparticle tunneling through single normal-metal–insulator–superconductor (NIS) junction. In contrast to previous studies with multiple junctions and an additional charge island for the QCR, we directly connect NIS junction inductively shunted electrode of superconducting microwave resonator making device immune low-fre...

Small self-contained quantum thermal machines function without external source of work or control but using only incoherent interactions with thermal baths. Here we investigate the role of entanglement in a small self-contained quantum refrigerator. We first show that entanglement is detrimental as far as efficiency is concerned-fridges operating at efficiencies close to the Carnot limit do not...

Electrified aircraft propulsion enables new designs with fewer emissions. One challenge of electrified architectures is handling the electrical components’ waste heat. This because batteries and other components are sensitive to high temperatures accumulate heat within their structure. In this work, we investigate using a thermoacoustic refrigerator cool battery parallel hybrid single-aisle com...

Assay organisms Saccharomyces cerevisiae and Sarcina lutea, when suspended in a weak buffer and stored at refrigerator temperatures, are stable for 1 year or more.