“…Previous reports show that a SPAD detection architecture can be used in confocal microscopy (Böhmer et al, 2001), fluorescence correlation spectroscopy (FCS) (Maiti et al, 1997;Ray et al, 2010), microarrays (Marangoni et al, 2010), flow cytometry (Li et al, 2012b), 3D acquisition (Aull et al, 2002;Niclass et al, 2008;Niclass et al, 2005), FLIM (Gersbach et al, 2010), single--molecule FRET Michalet et al, 2013;Panzeri et al, 2013), astrophysics (Zappa et al, 2007), astronomy (Nightingale, 1990), quantum mechanics (Rarity and Tapster, 1990), quantum cryptography (Chiangga et al, 1999), diode laser characterization (Cova et al, 1989) and optical fibre testing (Ripamonti et al, 1990).…”