Publications de Harald Arjan Robert Homulle

Single-photon avalanche diode imagers in biophotonics: review and outlook

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic, Samuel Burri, Harald Arjan Robert Homulle

Single-photon avalanche diode (SPAD) arrays are solid-state detectors that offer imaging capabilities at the level of individual photons, with unparalleled photon counting and time-resolved performance. This fascinating technology has progressed at a very ...

2019

Benefits and Challenges of Designing Cryogenic CMOS RF Circuits for Quantum Computers

Edoardo Charbon, Harald Arjan Robert Homulle, Fabio Sebastiano

Accurate and low-noise generation and amplification of microwave signals are required for the manipulation and readout of quantum bits (qubits). A fault-tolerant quantum computer operates at deep cryogenic temperatures (i.e.,

IEEE2019

Performance characterization of Altera and Xilinx 28 nm FPGAs at cryogenic temperatures

Edoardo Charbon, Harald Arjan Robert Homulle

Quantum computers enable a massive speed-up in calculations, thanks to the nature of quantum operations. To unlock quantum computation, a classical system infrastructure is required for the control of qubits and processing of their data. While qubits are g ...

2018

Design techniques for a stable operation of cryogenic field-programmable gate arrays

Edoardo Charbon, Harald Arjan Robert Homulle

In this paper, we show how a deep-submicron field-programmable gate array (FPGA) can be operated more stably at extremely low temperatures through special firmware design techniques. Stability at low temperatures is limited through long power supply wires ...

2018

The Cryogenic Temperature Behavior of Bipolar, MOS, and DTMOS Transistors in Standard CMOS

Edoardo Charbon, Harald Arjan Robert Homulle, Fabio Sebastiano

Both CMOS bandgap voltage references and temperature sensors rely on the temperature behavior of either CMOS substrate BJTs or MOS transistors in weak inversion. Bipolar transistors are generally preferred over MOS transistors because of their lower spread ...

2018

Characterization and Compact Modeling of Nanometer CMOS Transistors at Deep-Cryogenic Temperatures

Edoardo Charbon, Harald Arjan Robert Homulle, Fabio Sebastiano

Cryogenic characterization and modeling of two nanometer bulk CMOS technologies (0.16-μm and 40-nm) are presented in this paper. Several devices from both technologies were extensively characterized at temperatures of 4 K and below. Based on a detailed und ...

2018

Cryogenic low-dropout voltage regulators for stable low-temperature electronics

Edoardo Charbon, Harald Arjan Robert Homulle

To enable scalable quantum computers, it has been proposed that the quantum classical interface has to be integrated and operated at deep-cryogenic temperatures. Common to all electronics is the power management and distribution through the system. These s ...

ELSEVIER SCI LTD2018

FPGA Design Techniques for Stable Cryogenic Operation

Edoardo Charbon, Harald Arjan Robert Homulle

2018

A reconfigurable cryogenic platform for the classical control of quantum processors

Edoardo Charbon, Harald Arjan Robert Homulle, Fabio Sebastiano

The implementation of a classical control infrastructure for large-scale quantum computers is challenging due to the need for integration and processing time, which is constrained by coherence time. We propose a cryogenic reconfigurable platform as the hea ...

2017

Characterization of bipolar transistors for cryogenic temperature sensors in standard CMOS

Edoardo Charbon, Harald Arjan Robert Homulle, Fabio Sebastiano

This paper presents the cryogenic characterization of the bipolar substrate PNPs that are typically employed as sensing elements in CMOS integrated temperature sensors. PNPs realized in a standard 160-nm CMOS technology were characterized over the temperat ...

2017