Searched for:
(1 - 20 of 52)

Pages

document
van Dijk, J.P.G. (author), Charbon, E.E.E. (author), Sebastiano, F. (author)
Quantum computers can potentially provide an unprecedented speed-up with respect to traditional computers. However, a significant increase in the number of quantum bits (qubits) and their performance is required to demonstrate such quantum supremacy. While scaling up the underlying quantum processor is extremely challenging, building the...
journal article 2019
document
Zhang, C. (author), Lindner, S.A. (author), Antolović, I.M. (author), Wolf, Martin (author), Charbon, E.E.E. (author)
Per-pixel time-to-digital converter (TDC) architectures have been exploited by single-photon avalanche diode (SPAD) sensors to achieve high photon throughput, but at the expense of fill factor, pixel pitch and readout efficiency. In contrast, TDC sharing architecture usually features high fill factor at small pixel pitch and energy efficient...
journal article 2018
document
Homulle, Harald (author), Song, L (author), Charbon, E.E.E. (author), Sebastiano, F. (author)
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. However, at deep-cryogenic temperatures, the performance of BJTs deteriorates due to a...
journal article 2018
document
Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Charbon, E.E.E. (author)
Direct time-of-flight (dTOF) image sensors require accurate and robust timing references for precise depth calculation. On-chip timing references are well-known and understood, but for imaging systems where several thousands of pixels require seamless references, area and power consumption limit the use of more traditional synthesizers, such as...
journal article 2018
document
Antolović, I.M. (author), Bruschini, Claudio (author), Charbon, E.E.E. (author)
. In this paper, we present a thorough analysis,...
journal article 2018
document
Homulle, Harald (author), Visser, Stefan (author), Patra, B (author), Charbon, E.E.E. (author)
journal article 2018
document
Venialgo Araujo, E. (author), Lusardi, N. (author), Garzetti, F. (author), Geraci, A. (author), Brunner, S. (author), Schaart, D.R. (author), Charbon, E.E.E. (author)
Typically, a time-of-flight (TOF) PET block detector is built using application-specific integrated circuits (ASICs), since they integrate a high number of channels at a reasonable power consumption and into a small area. However, ASICs’ flexibility is limited and prototyping times are long because a semiconductor fabrication process is required...
journal article 2018
document
Padmanabhan, P. (author), Hancock, Bruce (author), Nikzad, Shouleh (author), Bell, L. Douglas (author), Kroep, Kees (author), Charbon, E.E.E. (author)
Gallium nitride (GaN) and its alloys are becoming preferred materials for ultraviolet (UV) detectors due to their wide bandgap and tailorable out-of-band cutoff from 3.4 eV to 6.2 eV. GaN based avalanche photodiodes (APDs) are particularly suitable for their high photon sensitivity and quantum efficiency in the UV region and for their...
journal article 2018
document
Patra, B (author), Incandela, R.M. (author), van Dijk, J.P.G. (author), Homulle, Harald (author), Song, Lin (author), Shahmohammadi, M. (author), Staszewski, R.B. (author), Vladimirescu, A. (author), Babaie, M. (author), Sebastiano, F. (author), Charbon, E.E.E. (author)
A fault-tolerant quantum computer with millions of quantum bits (qubits) requires massive yet very precise control electronics for the manipulation and readout of individual qubits. CMOS operating at cryogenic temperatures down to 4 K (cryo-CMOS) allows for closer system integration, thus promising a scalable solution to enable future quantum...
contribution to periodical 2018
document
Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon, E.E.E. (author)
/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...
journal article 2018
document
Incandela, R.M. (author), Song, L (author), Homulle, Harald (author), Charbon, E.E.E. (author), Vladimirescu, A. (author), Sebastiano, F. (author)
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 understanding of the device physics at deep-cryogenic temperatures, a compact...
journal article 2018
document
Oi, Daniel K.L. (author), Ling, Alex (author), Vallone, Giuseppe (author), Villoresi, Paolo (author), Greenland, Steve (author), Kerr, Emma (author), Macdonald, Malcolm (author), Weinfurter, Harald (author), Kuiper, J.M. (author), Charbon, E.E.E. (author), Ursin, Rupert (author)
Quantum communication is a prime space technology application and offers near-term possibilities for long-distance quantum key distribution (QKD) and experimental tests of quantum entanglement. However, there exists considerable developmental risks and subsequent costs and time required to raise the technological readiness level of...
journal article 2017
document
Homulle, Harald (author), Visser, Stefan (author), Patra, B (author), Prati, Enrico (author), Sebastiano, F. (author), Charbon, E.E.E. (author)
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 heart of the control infrastructure implementing the digital error-correction control loop....
journal article 2017
document
Antolović, I.M. (author), Burri, S. (author), Bruschini, Claudio (author), Hoebe, Ron A. (author), Charbon, E.E.E. (author)
sCMOS imagers are currently utilized (replacing EMCCD imagers) to increase the acquisition speed in super resolution localization microscopy. Single-photon avalanche diode (SPAD) imagers feature frame rates per bit depth comparable to or higher than sCMOS imagers, while generating microsecond 1-bit-frames without readout noise, thus paving...
journal article 2017
document
Rotta, Davide (author), Sebastiano, F. (author), Charbon, E.E.E. (author), Prati, Enrico (author)
Even the quantum simulation of an apparently simple molecule such as Fe2S2 requires a considerable number of qubits of the order of 106, while more complex molecules such as alanine (C3H7NO2) require about a hundred times more. In order to assess such a multimillion scale of identical qubits and control lines, the silicon platform seems to be...
journal article 2017
document
Homulle, Harald (author), Charbon, E.E.E. (author)
We propose an analog-to-digital converter (ADC) architecture, implemented in an FPGA, that is fully reconfigurable and easy to calibrate. This approach allows to alter the design, according to the system requirements, with simple modifications in the firmware. Therefore it can be used in a wide range of operating conditions, including a harsh...
journal article 2016
document
Antolović, I.M. (author), Burri, S (author), Hoebe, RA (author), Maruyama, Yuki (author), Bruschini, Claudio (author), Charbon, E.E.E. (author)
The paper presents a camera comprising 512 × 128 pixels capable of single-photon detection and gating with a maximum frame rate of 156 kfps. The photon capture is performed through a gated single-photon avalanche diode that generates a digital pulse upon photon detection and through a digital one-bit counter. Gray levels are obtained through...
journal article 2016
document
Homulle, Harald (author), Powolny, F (author), Stegehuis, PL (author), Dijkstra, J (author), Li, DU (author), Homicsko, K (author), Rimoldi, D. (author), Muehlethaler, K. (author), Prior, JO (author), Sinisi, R (author), Dubikovskaya, E (author), Charbon, E.E.E. (author), Bruschini, Claudio (author)
In near infrared fluorescence-guided surgical oncology, it is challenging to distinguish healthy from cancerous tissue. One promising research avenue consists in the analysis of the exogenous fluorophores’ lifetime, which are however in the (sub-)nanosecond range. We have integrated a single-photon pixel array, based on standard CMOS SPADs ...
journal article 2016
document
Sun, P. (author), Ishihara, R. (author), Charbon, E. (author)
We proposed the world’s first flexible ultrathin-body single-photon avalanche diode (SPAD) as photon counting device providing a suitable solution to advanced implantable bio-compatible chronic medical monitoring, diagnostics and other applications. In this paper, we investigate the Geiger-mode performance of this flexible ultrathin-body SPAD...
journal article 2016
document
Sammak, A. (author), Aminian, Mahdi (author), Nanver, L.K. (author), Charbon, E.E.E. (author)
Pure gallium and pure boron (PureGaB) Ge-on-Si photodiodes were fabricated in a CMOS compatible process and operated in linear and avalanche mode. Three different pixel geometries with very different area-to-perimeter ratios were investigated in linear arrays of 300 pixels with each a size of 26 × 26 μm2. The processing of anode contacts at the...
journal article 2016
Searched for:
(1 - 20 of 52)

Pages