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Showing 1–3 of 3 results
Advanced filters: Author: Joydip Sarkar Clear advanced filters

  • Graphene-based Josephson junction bolometers hold promise as sensitive single-photon detectors, but they are normally limited by slow readout schemes and narrow operational bandwidths. Here, the authors report the application of Josephson parametric amplifiers as fast, tunable bolometers with sensitivity enhanced by the intrinsic Kerr non-linearity.

    • Joydip Sarkar
    • Krishnendu Maji
    • Mandar M. Deshmukh
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-8

  • Low-noise amplification of feeble microwave signals is essential for superconducting quantum circuitry. Now, a gate-tunable Josephson parametric amplifier made from graphene shows 24 dB amplification paired with 10 MHz bandwidth and –130 dBm saturation power.

    • Joydip Sarkar
    • Kishor V. Salunkhe
    • Mandar M. Deshmukh
    Research
    Nature Nanotechnology
    Volume: 17, P: 1147-1152