2022
DOI: 10.48550/arxiv.2209.13652
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Magnetic field-resilient quantum-limited parametric amplifier

Abstract: Superconducting parametric amplifiers are crucial components in microwave quantum circuits for enabling quantum-limited signal readout. The best-performing such amplifiers are often based on Josephson junctions, which however are sensitive to magnetic fields. Therefore, they require magnetic shields and are not easily integratable with other quantum systems that operates within magnetic fields, such as spin ensemble quantum memories. To tackle this challenge, we have developed a kinetic inductance-based parame… Show more

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“…Last, we note that along with recent studies of 4WM parametric amplifiers made from NbN (46) and NbTiN (47), our demonstration here of a magnetic field-resilient superconducting parametric amplifier is promising not only for measurements of spin ensembles but also for a broad class of quantum experiments that combine magnetic fields with microwave measurements (48)(49)(50).…”
Section: Discussionmentioning
confidence: 61%
“…Last, we note that along with recent studies of 4WM parametric amplifiers made from NbN (46) and NbTiN (47), our demonstration here of a magnetic field-resilient superconducting parametric amplifier is promising not only for measurements of spin ensembles but also for a broad class of quantum experiments that combine magnetic fields with microwave measurements (48)(49)(50).…”
Section: Discussionmentioning
confidence: 61%