4 papers
Photothermal resistivity alignment of optical fibers to SNSPD
Martin Baránek, DuÅ¡an Lorenc, Tomáš Å Äepka +5
We demonstrate a straightforward optoelectronic fiber alignment technique for superconducting nanowire single-photon detectors (SNSPDs) that exploits the temperature-dependent resi…
Optical and transport properties of NbN thin films revisited
Samuel Kern, Pavol Neilinger, Magdaléna PoláÄková +4
Highly disordered NbN thin films exhibit promising superconducting and optical properties. Despite extensive study, discrepancies in its basic electronic properties persist. Analys…
Third harmonic-mediated amplification in TWPA
E. Rizvanov, S. Kern, P. Neilinger +1
In Josephson Traveling-Wave Parametric Amplifiers, higher-order harmonics of the pump tone and its sidebands are commonly present and typically regarded as parasitic. Consequently,…
Josephson Traveling Wave Parametric Amplifiers with Plasma oscillation phase-matching
Emil Rizvanov, Samuel Kern, Pavol Neilinger +1
High gain and large bandwidth of traveling-wave parametric amplifier exploiting the nonlinearity of Josephson Junctions can be achieved by fulfilling the so-called phase-matching c…