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Josephson Traveling Wave Parametric Amplifiers as Non-Classical Light Source for Microwave Quantum Illumination

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arxiv 2106.00522 v2 pith:D2QGQ4UP submitted 2021-06-01 quant-ph cond-mat.supr-con

Josephson Traveling Wave Parametric Amplifiers as Non-Classical Light Source for Microwave Quantum Illumination

Luca Fasolo , Angelo Greco , Emanuele Enrico , Fabrizio Illuminati , Rosario Lo Franco , David Vitali , Patrizia Livreri This is my paper
classification quant-ph cond-mat.supr-con
keywords quantumamplifiersdetectionentangledilluminationjosephsonmicrowaveparametric
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Detection of low-reflectivity objects can be enriched via the so-called quantum illumination procedure. In order that this quantum procedure outperforms classical detection protocols, entangled states of microwave radiation are initially required. In this paper, we discuss the role of Josephson Traveling Wave Parametric Amplifiers (JTWPAs), based on circuit-QED components, as suitable sources of a two-mode squeezed vacuum state, a special signal-idler entangled state. The obtained wide bandwidth makes the JTWPA an ideal candidate for generating quantum radiation in quantum metrology and information processing applications.

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