Transition-edge sensors (TESs) are promising micro-calorimeters for applications in the field of quantum information, quantum computation and metrology due to their photon-number resolving capability. Quantum efficiency (QE) is fundamental in single-photon detection and it should be as high as possible. For this reason the coupling between the light source and the sensor plays a crucial role. In this work we present single photon detection obtained by two Ti/Au TESs deposited on the silicon nitride substrate. These two sensors are coupled with two optical fibers pre-assembled at a fixed distance on a Si V-groove substrate which is fixed directly on the chip with a small 90 degree angle bracket. The alignment between the detectors and the fibers is made using a purpose built system. Single-photon counting data at 690 nm and 1310 nm using pulsed lasers are presented.
Ti/Au Transition-Edge Sensors Coupled to Single Mode Optical Fibers Aligned by Si V-Groove / Lolli, L; Taralli, Emanuele; Portesi, Chiara; Alberto, D; Rajteri, Mauro; Monticone, Eugenio. - In: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY. - ISSN 1051-8223. - 21:3(2011), pp. 215-218. [10.1109/TASC.2010.2103352]
Ti/Au Transition-Edge Sensors Coupled to Single Mode Optical Fibers Aligned by Si V-Groove
TARALLI, EMANUELE;PORTESI, CHIARA;RAJTERI, MAURO;MONTICONE, EUGENIO
2011
Abstract
Transition-edge sensors (TESs) are promising micro-calorimeters for applications in the field of quantum information, quantum computation and metrology due to their photon-number resolving capability. Quantum efficiency (QE) is fundamental in single-photon detection and it should be as high as possible. For this reason the coupling between the light source and the sensor plays a crucial role. In this work we present single photon detection obtained by two Ti/Au TESs deposited on the silicon nitride substrate. These two sensors are coupled with two optical fibers pre-assembled at a fixed distance on a Si V-groove substrate which is fixed directly on the chip with a small 90 degree angle bracket. The alignment between the detectors and the fibers is made using a purpose built system. Single-photon counting data at 690 nm and 1310 nm using pulsed lasers are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
