Quantum illumination has been suggested as a way to improve the sensitivity of remote target detection by taking advantage of quantum entanglement between a traveling electromagnetic beam of light interrogating the target, and a second beam kept in the lab. In the microwave domain, superconducting quantum circuit utilizing superconducting Josephson tunnel junctions can be used as quantum-limited amplifiers of faint microwave signals, as well as bright sources of quantum entangled signals. These Josephson parametric amplifiers (JPAs) are poised to become fundamental building block in a future quantum illumination radar operating in the microwave domain. Demonstrating a practical advantage of quantum illumination with ambient temperature signals is, however, challenging. Indeed, current quantum protocols are not practical as they require a complex receiver with stringent phase-matching conditions, which cannot be met in the field. Notably, it is also not currently known how one can transfer faint microwave signals out of cryogenic systems without destroying their fragile entanglement. In this article, we discuss the recent progress and challenges regarding the development of an all-microwave quantum illumination radar using the recently developed and implemented quantum-enhanced noise radar protocol. This quantum illumination protocol is simpler to implement and procures a quantum enhancement over its classical analog. Finally, we discuss different strategies that may resolve the issue of transmitting microwave entanglement under ambient conditions. We, thus, conclude that successful transmission of entangled microwaves can be done in the near future, with possible demonstrations of practical quantum advantage over short distances.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Progress Toward an All-Microwave Quantum Illumination Radar


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.11.2020


    Format / Umfang :

    1452736 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Progress in illumination

    Engineering Index Backfile | 1935


    Toward a New Generation of Radar Systems Based on Microwave Photonic Technologies

    Serafino, Giovanni | British Library Online Contents | 2019


    Toward a New Generation of Radar Systems Based on Microwave Photonic Technologies

    Serafino, Giovanni | British Library Online Contents | 2019


    The Quantum Illumination Story

    Shapiro, Jeffrey H. | IEEE | 2020

    Freier Zugriff

    Subsurface Illumination and Propagation in Ground Penetrating Radar

    Pennock, S. R. / Redfern, M. A. / Shan, Q. et al. | British Library Conference Proceedings | 2006