Y. JompolP. RoulleauT. JullienB. RocheI. FarrerD. A. RitchieD. C. GlattliService de Physique de l'Etat CondenseUniversity of CambridgeMahidol University2018-11-232018-11-232015-01-01Nature Communications. Vol.6, (2015)204117232-s2.0-84923096525https://repository.li.mahidol.ac.th/handle/20.500.14594/35621© 2014 Macmillan Publishers Limited. All rights reserved. The high-frequency radiation emitted by a quantum conductor presents a rising interest in quantum physics and condensed matter. However, its detection with microwave circuits is challenging. Here, we propose to use the photon-assisted shot noise for on-chip radiation detection. It is based on the low-frequency current noise generated by the partitioning of photon-excited electrons and holes, which are scattered inside the conductor. For a given electromagnetic coupling to the radiation, the photon-assisted shot noise response is shown to be independent on the nature and geometry of the quantum conductor used for the detection, up to a Fano factor, characterizing the type of scattering mechanism. Ordered in temperature or frequency range, from few tens of mK or GHz to several hundred of K or THz respectively, a wide variety of conductors can be used like Quantum Point Contacts (this work), diffusive metallic or semi-conducting films, graphene, carbon nanotubes and even molecule, opening new experimental opportunities in quantum physics.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyChemistryArticleSCOPUS10.1038/ncomms7130