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Number‐Resolved Single‐Photon Detection with Ultralow Noise van der Waals Hybrid
Author(s) -
Roy Kallol,
Ahmed Tanweer,
Dubey Harshit,
Sai T. Phanindra,
Kashid Ranjit,
Maliakal Shruti,
Hsieh Kimberly,
Shamim Saquib,
Ghosh Arindam
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201704412
Subject(s) - van der waals force , materials science , graphene , photon , noise (video) , atomic physics , optoelectronics , physics , molecular physics , optics , nanotechnology , quantum mechanics , molecule , artificial intelligence , computer science , image (mathematics)
Van der Waals hybrids of graphene and transition metal dichalcogenides exhibit an extremely large response to optical excitation, yet counting of photons with single‐photon resolution is not achieved. Here, a dual‐gated bilayer graphene (BLG) and molybdenum disulphide (MoS 2 ) hybrid are demonstrated, where opening a band gap in the BLG allows extremely low channel (receiver) noise and large optical gain (≈10 10 ) simultaneously. The resulting device is capable of unambiguous determination of the Poissonian emission statistics of an optical source with single‐photon resolution at an operating temperature of 80 K, dark count rate 0.07 Hz, and linear dynamic range of ≈40 dB. Single‐shot number‐resolved single‐photon detection with van der Waals heterostructures may impact multiple technologies, including the linear optical quantum computation.