Publication: Detecting noise with shot noise using on-chip photon detector
Issued Date
2015-01-01
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ISSN
20411723
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2-s2.0-84923096525
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Mahidol University
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SCOPUS
Bibliographic Citation
Nature Communications. Vol.6, (2015)
Suggested Citation
Y. Jompol, P. Roulleau, T. Jullien, B. Roche, I. Farrer, D. A. Ritchie, D. C. Glattli Detecting noise with shot noise using on-chip photon detector. Nature Communications. Vol.6, (2015). doi:10.1038/ncomms7130 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/35621
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Title
Detecting noise with shot noise using on-chip photon detector
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Abstract
© 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.