Publications de Ermanno Bernasconi

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The idea of exploiting quantum features of light to perform more precise astrophysical measurements is a long-desired goal of both the optics and astrophysics communities, but only recently have theoretical proposals started to be experimentally implemente ...

The overall sensitivity of frontside-illuminated, silicon single-photon avalanche diode (SPAD) arrays has often suffered from fill factor limitations. The fill factor loss can however be recovered by employing microlenses, whereby the challenges specific t ...

We present a single-photon-sensitive spectrometer based on a linear array of 512 single-photon avalanche diode detectors with 0.04 nm spectral and 40 ps temporal resolutions. We employ a fast data-driven operation that allows direct measurement of time and ...

We report on LinoSPAD2, a single-photon camera system, comprising a 512x1 single-photon avalanche diode (SPAD) front -end and one or two FPGA-based back-ends. Digital signals generated by the SPADs are processed by the FPGA in real time, whereas the FPGA o ...

The LinoSPAD2 camera combines a 512×1 linear single-photon avalanche diode (SPAD) array with an FPGA-based photon-counting and time-stamping platform, to create a reconfigurable sensing system capable of detecting single photons. The read-out is fully para ...

Silicon-based single-photon avalanche diodes (SPADs) implemented in front-side illuminated arrays and imagers have often suffered from fill factor limitations. The corresponding reduced sensitivity can be sometimes traded off with longer acquisition times ...

SPAD arrays are becoming a popular choice for measuring two-photon interference effects thanks to their high timing precision, fast readout, and high quantum efficiency. However, such sensors are affected by cross-talk that may mimic the useful signal. Eve ...

We describe a novel type of two-photon interferometer, capable of spectral binning, for quantum-assisted astrometry. We also demonstrated a single-photon spectrometer with spectral and timing resolutions of 0.1 nm and 50 ps, which can be used for this purp ...

Cross-talk is a well-known feature of single-photon avalanche detectors. It is especially important to account for this effect in applications involving temporal coincidences of two or more photons registered by the sensor since in this case the cross-talk ...

Ermanno Bernasconi

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Towards quantum telescopes (Abstract: Y07.00001 )

Challenges and prospects for multi-chip microlens imprints on front-side illuminated SPAD imagers

Fast data-driven spectrometer with direct measurement of time and frequency for multiple single photons

LinoSPAD2: an FPGA-based , hardware-reconfigurable 512x1 single-photon camera system

LinoSPAD2: a 512x1 linear SPAD camera with system-level 135-ps SPTR and a reconfigurable computational engine for time-resolved single-photon imaging

High-efficiency fill factor recovery using refractive microlens arrays imprinted on 0.5–256 kpixel front-side illuminated SPAD imagers

Characterizing and exploiting cross-talk effect in SPAD arrays for two-photon interference

Fast Two-Photon Interferometer Capable of Spectral Binning for Quantum Telescopy

Inter-pixel cross-talk as background to two-photon interference effects in SPAD arrays