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4 papers
DC-powered broadband quantum-limited microwave amplifier
N. Nehra, N. Bourlet, A. H. Esmaeili +7
Fast, high-fidelity, single-shot readout of superconducting qubits in quantum processors demands quantum-limited amplifiers to preserve the optimal signal-to-noise ratio. Typically…
Stroboscopic detection of itinerant microwave photons
Hanna Zeller, Lukas Danner, Max Hofheinz +4
We present a novel scheme to detect itinerant microwave radiation at the single photon level. Using existing Josephson-photonics devices, where two microwave cavities are coupled b…
Amplification and Detection of Single Itinerant Microwave Photons
Lukas Danner, Max Hofheinz, Nicolas Bourlet +3
Single-photon detectors are an essential part of the toolbox of modern quantum optics for implementing quantum technologies and enabling tests of fundamental physics. The low energ…
Influence of bias voltage noise on the Inelastic Cooper-Pair Tunneling Amplifier (ICTA)
Ulrich Martel, Romain Albert, Florian Blanchet +7
We experimentally show that the Inelastic Cooper-Pair Tunneling Amplifier (ICTA), implementing a DC-powered parametric amplification scheme, can achieve gain and noise performance…