Single photon detectors are fundamental tools for quantum metrology, e. g. to calibrate both detectors and sources, as for quantum information. One of the most promising detectors able to resolve single photons is the transition-edge sensor (TES). We report our last results obtained with Ti/Au TES deposited on SiN substrate. Photon counting measurements, obtained by using pulsed sources, in the NIR-visible wavelength range, show the ability to resolve up to fourteen photons with an energy resolution of 0.44 eV at 690 nm (1.80 eV) and 0.38 eV at 1310 nm (0.95 eV), with a good linearity. A preliminary measurement obtained by using a parametric down conversion (PDC) heralded single photon source, at 812 nm (1.53 eV), is also reported.
Ti/Au TES as superconducting detector for quantum technologies / Lolli, L.; Brida, Giorgio; Degiovanni, IVO PIETRO; Gramegna, Marco; Monticone, Eugenio; Piacentini, Fabrizio; Portesi, Chiara; Rajteri, Mauro; Berchera, I. R.; Taralli, Emanuele; Traina, Paolo. - In: INTERNATIONAL JOURNAL OF QUANTUM INFORMATION. - ISSN 0219-7499. - 9:(2011), pp. 405-413. [10.1142/S0219749911007022]
Ti/Au TES as superconducting detector for quantum technologies
BRIDA, GIORGIO;DEGIOVANNI, IVO PIETRO;GRAMEGNA, MARCO;MONTICONE, EUGENIO;PIACENTINI, FABRIZIO;PORTESI, CHIARA;RAJTERI, MAURO;Berchera, I. R.;TARALLI, EMANUELE;TRAINA, PAOLO
2011
Abstract
Single photon detectors are fundamental tools for quantum metrology, e. g. to calibrate both detectors and sources, as for quantum information. One of the most promising detectors able to resolve single photons is the transition-edge sensor (TES). We report our last results obtained with Ti/Au TES deposited on SiN substrate. Photon counting measurements, obtained by using pulsed sources, in the NIR-visible wavelength range, show the ability to resolve up to fourteen photons with an energy resolution of 0.44 eV at 690 nm (1.80 eV) and 0.38 eV at 1310 nm (0.95 eV), with a good linearity. A preliminary measurement obtained by using a parametric down conversion (PDC) heralded single photon source, at 812 nm (1.53 eV), is also reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
