Publications de Tommaso Milanese

Multifrequency-resolved Hanbury Brown–Twiss effect

Claudio Bruschini, Edoardo Charbon, Samuel Burri, Tommaso Milanese

The Hanbury Brown–Twiss (HBT) effect holds a pivotal place in intensity interferometry and gave a seminal contribution to the development of quantum optics. To observe such an effect, both good spectral and timing resolutions are necessary. Most often, the ...

AIP Publishing2025

Reconfigurable SPAD sensors for time-resolved imaging

Tommaso Milanese

SPADs have become the sensors of choice in many applications ranging from Time-of-Flight to low-light imaging. From their development in custom technologies, their introduction in standard CMOS processes has paved the way to their integration in mass produ ...

EPFL2025

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

Claudio Bruschini, Edoardo Charbon, Tommaso Milanese

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 ...

SPIE2025

Piccolo gated: a CMOS 32×32 SPAD camera with all-solid-state nanosecond time gating and PCIe readout for single-photon time-domain DCS and near-infrared optical tomography

Claudio Bruschini, Edoardo Charbon, Scott Anthony Lindner, Tommaso Milanese, Paul Mos, Michael Alan Wayne

The Piccolo gated sensor features a 32x32 SPAD array of single-photon avalanche diodes (SPADs) operating in time-correlated single-photon counting (TCSPC). The chip enables event-driven readout and a maximum count rate of 220 Mcps. The sensor is based on t ...

SPIE2024

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

Claudio Bruschini, Edoardo Charbon, Tommaso Milanese

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 ...

2024

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

Claudio Bruschini, Edoardo Charbon, Scott Anthony Lindner, Ivan Michel Antolovic, Vladimir Pesic, Tommaso Milanese

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 ...

Optica Publishing Group2023

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

Claudio Bruschini, Edoardo Charbon, Samuel Burri, Arin Can Ülkü, Tommaso Milanese

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 ...

SPIE2023

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

Claudio Bruschini, Edoardo Charbon, Frédéric Zanella, Scott Anthony Lindner, Ivan Michel Antolovic, Vladimir Pesic, Tommaso Milanese

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 ...

SPIE2023

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

Claudio Bruschini, Edoardo Charbon, Samuel Burri, Tommaso Milanese

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 ...

Optica Publishing Group2023

On Analog Silicon Photomultipliers in Standard 55-nm BCD Technology for LiDAR Applications

Edoardo Charbon, Francesco Gramuglia, Myung Jae Lee, Jiuxuan Zhao, Pouyan Keshavarzian, Tommaso Milanese

We present an analog silicon photomultiplier (SiPM) based on a standard 55-nm Bipolar-CMOS-DMOS (BCD) technology. The SiPM is composed of 16 x 16 single-photon avalanche diodes (SPADs) and measures 0.29 x 0.32 mm(2). Each SPAD cell is passively quenched by ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022