BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Single Photon Detection With Superconducting Nanowires - Dr Gabrie
 le Bulgarini\, (Single Quantum B.V.\, The Netherlands)
DTSTART:20190315T160000Z
DTEND:20190315T170000Z
UID:TALK122206@talks.cam.ac.uk
CONTACT:Dr Anna Ott
DESCRIPTION:Photon counters with high efficiency\, high time resolution\, 
 low dark counts and high photon detection-rates are indispensable elements
  of optical circuits. Superconducting nanowire single-photon detectors (SN
 SPDs) have been proven as one of the most promising photonic technology to
  meet performance requirements of quantum optical measurements. I will exp
 lain the operation of NbTiN supercondcuting photon detectors fabricated in
  two implementations: (1) detectors coupled to optical fibers and (2) inte
 grated detectors coupled to dielectric waveguides. Detection efficiency hi
 gher than 90% in the infrared range\, 100 MHz photon detection-rate\, dark
  counts of mHz and timing jitter below 15 ps are shown. The operation of t
 he detector is based on the transition of a nanowire from the superconduct
 ive to the resistive state upon the absorption of at least a single photon
 . The devices are operated in a closed-cycle cryostat at 2.5 Kelvin. This 
 turn-key approach enables continuous operation for up to 10\,000 hours and
  requires no liquid helium consumption\, providing plug and optical measur
 ements. SNSPDs have found important applications in (quantum) optical comm
 unication\, information technology\, time-resolved spectroscopy\, laser ra
 nging and remote sensing (LiDAR). SNSPD are envisioned as crucial photon d
 etectors for the development of all new technologies where photon counting
 \, high sensitivity\, fast time response and low noise are required. 
LOCATION:Cambridge Graphene Centre Seminar Room
END:VEVENT
END:VCALENDAR