@article{,
    author = {Merino, Rafael Luque; Seifert, Paul; Retamal, José Durán; Mech, Roop K.; Taniguchi, Takashi; Watanabe, Kenji; Kadowaki, Kazuo; Hadfield, Robert H.; Efetov, Dmitri K.},
    title = {Two-dimensional cuprate nanodetector with single telecom photon sensitivity at <em>T</em> = 20 K},
    editor = {},
    booktitle = {},
    series = {},
    journal = {2D Materials},
    address = {},
    publisher = {},
    edition = {},
    year = {2023},
    isbn = {},
    volume = {10},
    number =  {2},
    pages = {},
    url = {},
    doi = {10.1088/2053-1583/acb4a8},
    keywords = {2D ; cuprate ; nanodetector ; telecom ; photon ; nanowire ; He-FIB},
    abstract = {Detecting light at the single-photon level is one of the pillars of emergent photonic technologies.
This is realized through state-of-the-art superconducting detectors that offer efficient, broadband
and fast response. However, the use of low T<sub>C</sub> superconducting thin films limits their operation
temperature to approximately 4 K and below. Here, we demonstrate proof-of-concept
nanodetectors based on exfoliated, two-dimensional cuprate superconductor Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8-δ</sub>
that exhibit single-photon sensitivity at telecom wavelength at a record temperature of <em>T</em> = 20 K.
These non-optimized devices exhibit a slow (∼ ms) reset time and a low detection efficiency
(∼10<sup>−4</sup>). We realize the elusive prospect of single-photon sensitivity on a high-T<sub>C</sub> nanodetector
thanks to a novel approach, combining van der Waals fabrication techniques and a non-invasive
nanopatterning based on light ion irradiation. This result paves the way for broader application of
single-photon technologies, relaxing the cryogenic constraints for single-photon detection at
telecom wavelength.},
    note = {},
    institution = {Universität der Bundeswehr München, Fakultät für Elektrotechnik und Informationstechnik, EIT 2 - Institut für Physik, Professur: Seifert, Paul},
    
    
}