Microwave Quantum Radar using a Josephson Traveling Wave Parametric Amplifier

  1. Patrizia Livreri,
  2. Emanuele Enrico,
  3. Luca Fasolo,
  4. Angelo Greco,
  5. Alessio Rettaroli,
  6. David Vitali,
  7. Alfonso Farina,
  8. Francesco Marchetti,
  9. and Dario Giacomin
Detection of low-reflectivity objects can be improved by the so-called quantum illumination procedure. However, quantum detection probability exponentially decays with the source bandwidth. The Josephson Parametric Amplifiers (JPAs) technology utilized as a source, generating a pair of entangled signals called two-mode squeezed vacuum states, shows a very narrow bandwidth limiting the operation of the microwave quantum radar (MQR). In this paper, for the first time, a microwave quantum radar setup based on quantum illumination protocol and using a Josephson Traveling Wave Parametric Amplifier (JTWPA) is proposed. Measurement results of the developed JTWPA, pumped at 12 GHz, show an ultrawide bandwidth equal to 10 GHz at X-band making our MQR a promising candidate for the detection of stealth objects.
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