Nanoscale Optical Detector with Single-Photon and Multiphoton Sensitivity

We present the first nanoscale (down to ≈50 × 50 nm2) detector displaying single-photon sensitivity and a nanosecond response. This type of nanodetector can also be operated in multiphoton mode, where the detection threshold can be set at N = 1, 2, 3, or 4 photons, thus allowing the mapping of photo...

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Veröffentlicht in:	Nano letters 2010-08, Vol.10 (8), p.2977-2981
Hauptverfasser:	Bitauld, David, Marsili, Francesco, Gaggero, Alessandro, Mattioli, Francesco, Leoni, Roberto, Nejad, Saeedeh Jahanmiri, Lévy, Francis, Fiore, Andrea
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology General equipment and techniques Instruments, apparatus, components and techniques common to several branches of physics and astronomy Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Physics Quantum wires Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties)
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Zusammenfassung:	We present the first nanoscale (down to ≈50 × 50 nm2) detector displaying single-photon sensitivity and a nanosecond response. This type of nanodetector can also be operated in multiphoton mode, where the detection threshold can be set at N = 1, 2, 3, or 4 photons, thus allowing the mapping of photon number statistics on the nanoscale. Its operation principle based on that of hot-spot formation in superconducting nanowires allies the temporal resolution and sensitivity of superconducting single-photon detectors with subwavelength resolution and photon number discrimination. Such detectors can be of great interest for the study of nanophotonic devices at low temperature.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl101411h