[Détection de photons micro-ondes itinérants]
Les détecteurs de photons uniques sont des outils fondamentaux en optique quantique et tiennent un rôle central dans la théorie de la mesure et l'informatique quantique. Dans le domaine optique, plusieurs types de photo-détecteurs sont opérationnels et, pour répondre aux exigences du calcul et de la communication quantiques, un effort considérable est actuellement porté sur l'amélioration de leurs efficacités. Cependant, dans le domaine des micro-ondes, la détection de photons uniques reste un défi à relever, bien que plusieurs propositions théoriques aient été faites. Dans cet article, nous passerons en revue ces récentes propositions, avec un accent particulier sur la détection non destructive de photons mico-ondes propagatifs. Ces schémas de détection basés sur des atomes artificiels supraconducteurs peuvent atteindre des efficacités de détection de 90% avec des technologies existantes et sont prêts pour l'expérimentation.
Single-photon detectors are fundamental tools of investigation in quantum optics and play a central role in measurement theory and quantum informatics. Photodetectors based on different technologies exist at optical frequencies and much effort is currently being spent on pushing their efficiencies to meet the demands coming from the quantum computing and quantum communication proposals. In the microwave regime, however, a single-photon detector has remained elusive, although several theoretical proposals have been put forth. In this article, we review these recent proposals, especially focusing on non-destructive detectors of propagating microwave photons. These detection schemes using superconducting artificial atoms can reach detection efficiencies of 90% with the existing technologies and are ripe for experimental investigations.
Mot clés : Détection de photons uniques, Mesure quantique non destructive, Circuits supraconducteurs, Photons micro-ondes
Sankar Raman Sathyamoorthy 1 ; Thomas M. Stace 2 ; Göran Johansson 1
@article{CRPHYS_2016__17_7_756_0, author = {Sankar Raman Sathyamoorthy and Thomas M. Stace and G\"oran Johansson}, title = {Detecting itinerant single microwave photons}, journal = {Comptes Rendus. Physique}, pages = {756--765}, publisher = {Elsevier}, volume = {17}, number = {7}, year = {2016}, doi = {10.1016/j.crhy.2016.07.010}, language = {en}, }
Sankar Raman Sathyamoorthy; Thomas M. Stace; Göran Johansson. Detecting itinerant single microwave photons. Comptes Rendus. Physique, Volume 17 (2016) no. 7, pp. 756-765. doi : 10.1016/j.crhy.2016.07.010. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2016.07.010/
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