Concept

Photon counting

Publications associées (98)

Single Photon Imaging in CMOS

CMOS single photon detectors enable large pixel arrays and integrated ancillary circuits. As a consequence, higher timing accuracy and reduced power consumption can be achieved at lower costs. This paper discusses applications and implementation considerat ...

2006

Oversampled Time Estimation Techniques for Precision Photonic Detectors

Edoardo Charbon

Several physical quantities of interest are of quantum nature, often measurable as distinct particles. Light is one such example, photons being its particles. In conventional detectors, light is converted onto electrical charges and hence onto a current or ...

2006

Growth and characterization of single quantum dot devices for fiber-based quantum communications

Blandine Alloing

Single photon sources have recently attracted significant interest for their potential role in the future applications of quantum cryptography, and in the longer term, quantum computing. Among the different types of single photon emitters, semiconductor qu ...

EPFL2006

Design and characterization of a CMOS 3-D image sensor based on single photon avalanche diodes

Edoardo Charbon, Pierre-André Besse, Cristiano Niclass, Alexis Rochas

The design and characterization of an imaging system is presented for depth information capture of arbitrary three-dimensional (3-D) objects. The core of the system is an array of 32 × 32 rangefinding pixels that independently measure the time-of-flight of ...

2005

Arrays of Single Photon Avalanche Diodes in CMOS Technology: Picosecond Timing Resolution for Range Imaging (INVITED)

Edoardo Charbon, Pierre-André Besse, Cristiano Niclass

A solid-state imager fabricated in CMOS technology is presented for depth information capture of arbitrary 3D objects with millimeter resolution. The system is based on an array of 32x32 pixels that independently measure the time-of-flight of a ray of ligh ...

2005

Correlated photon emission from pyramidal quantum dot heterostructures

Quantum dots (QDs) are nanoscopic semiconductor crystals. Electronic transitions inside QDs lead to photon emission with unique properties. Photons can for instance be emitted as triggered single photons or as pairs of correlated photons with different ene ...

EPFL2005

A single photon detector array with 64x64 resolution and millimetric depth accuracy for 3D imaging

Edoardo Charbon, Cristiano Niclass

An avalanche photodiode array uses single-photon counting to perform time-of-flight range-finding on a scene uniformly hit by 100ps 250mW uncollimated laser pulses. The 32x32 pixel sensor, fabricated in a 0.8μm CMOS process uses a microscanner package to e ...

2005

Intermediate valence behaviour under pressure: how precisely can we probe it by means of resonant inelastic x-ray emission?

Marco Grioni

Rare earths and their compounds show many interesting physical phenomena caused by the complex electronic structure related to f electrons. External pressure can affect the hybridization between 5d band electrons and the more atomic-like 4f ones, giving ri ...

Institute of Physics2005

Time-resolved Hadamard fluorescence imaging

Theo Lasser, Kai Hassler

We present a new concept for fluorescence lifetime imaging (FLIM) based on time-resolved Hadamard imaging (HI). HI allows image acquisition by use of one single-point detector without requiring a moving scanning stage. Moreover, it reduces the influence of ...

2005

Comparison of Monte Carlo simulations of photon/electron dosimetry in microscale applications

Rakesh Chawla, Cezarina Elena Negreanu

It is important to establish reliable calculational tools to plan and analyse representative microdosimetry experiments in the context of microbeam radiation therapy development. In this paper, an attempt has been made to investigate the suitability of the ...

Australasian Coll. of Phys. Scientists and Engineers2003

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