Publications associées à Amplificateur faible bruit

Interfacing Qubits via Cryo-CMOS Front Ends

Edoardo Charbon, Andrea Ruffino, Yatao Peng

This work describes a basic interface between solid-state quantum bits (qubits) and classical environments. We describe a multiplexer, a circulator, and a low noise amplifier, designed for cryogenic temperature operation in a 40 nm CMOS technology node. Th ...

IEEE2018

High Signal-to-Noise Ratio Stimulated Brillouin Scattering Gain Spectrum Measurement

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Kenny Hey Tow, Flavien Gyger

A technique to measure nonlinear processes, such as stimulated Brillouin scattering, with a very-high signal-to-noise ratio (SNR) is presented. Brillouin gain measurement with 77dB SNR is demonstrated over a 2m-long section of single-mode fiber. ...

Optical Society of America2018

Quantum-Limited Directional Amplifiers with Optomechanics

Tobias Kippenberg, Nathan Rafaël Bernier, László Dániel Tóth

Directional amplifiers are an important resource in quantum-information processing, as they protect sensitive quantum systems from excess noise. Here, we propose an implementation of phase-preserving and phase-sensitive directional amplifiers for microwave ...

2018

Frequency Comb Stabilization of Ultrafast Lasers by Opto-Optical Modulation of Semiconductors

Sargis Hakobyan

In this paper, we review the current state and discuss new developments in opto-optical modulation (OOM) of semiconductor elements for frequency comb self-referenced stabilization of ultrafast lasers. This method has been successfully used for carrier-enve ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2018

Bolometric detection of ferromagnetic resonance in YIG slab

Jean-Philippe Ansermet, Haiming Yu, Sa Tu, Marcin Bialek, Yao Zhang

The resistance of the Pt bar deposited on the YIG slab was monitored while the magnetic field was ramped through the ferromagnetic resonance with the YIG slab facing a coplanar waveguide resonator excited at 4.3 GHz excitation. The resistance change provid ...

Elsevier2017

An illustrated comparison of processing methods for MR phase imaging and QSM: combining array coil signals and phase unwrapping

José Pedro Rebelo Ferreira Marques, Diana Khabipova

Phase imaging benefits from strong susceptibility effects at very high field and the high signal-to-noise ratio (SNR) afforded by multi-channel coils. Combining the information from coils is not trivial, however, as the phase that originates in local field ...

Wiley2017

Phase Transitions in the Pooled Data Problem

Volkan Cevher, Jonathan Mark Scarlett

In this paper, we study the {\em pooled data} problem of identifying the labels associated with a large collection of items, based on a sequence of pooled tests revealing the counts of each label within the pool. In the noiseless setting, we identify an ex ...

2017

Polarisation pulling in Brillouin optical time-domain analysers

Luc Thévenaz, Marcelo Alfonso Soto Hernandez

The impact of Brillouin scattering on the polarisation of pump and probe in a Brillouin optical-time domain analyser is investigated. Experimental results indicate that the Brillouin interaction integrated along the entire sensing fibre produces a polarisa ...

Ieee2017

Conformal Mapping of Impedance Stability Models for System-Level Dynamics Assessments

Drazen Dujic, Francisco Daniel Freijedo Fernández, Uzair Javaid

Impedance stability methods are suitable for assessing the dynamics of power converters controllers, but also for ac/dc microgrids system level studies. This work proposes the combination of impedance modeling and conformal mapping for the identification o ...

2017

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Amplificateur faible bruit

Interfacing Qubits via Cryo-CMOS Front Ends

High Signal-to-Noise Ratio Stimulated Brillouin Scattering Gain Spectrum Measurement

Quantum-Limited Directional Amplifiers with Optomechanics

A 2.2 NEF Neural-Recording Amplifier Using Discrete-Time Parametric Amplification

Frequency Comb Stabilization of Ultrafast Lasers by Opto-Optical Modulation of Semiconductors

Bolometric detection of ferromagnetic resonance in YIG slab

An illustrated comparison of processing methods for MR phase imaging and QSM: combining array coil signals and phase unwrapping

Phase Transitions in the Pooled Data Problem

Polarisation pulling in Brillouin optical time-domain analysers

Conformal Mapping of Impedance Stability Models for System-Level Dynamics Assessments

Graph Chatbot

Chattez avec Graph Search

Bolometric detection of ferromagnetic resonance in YIG slab

Conformal Mapping of Impedance Stability Models for System-Level Dynamics Assessments

Quantum-Limited Directional Amplifiers with Optomechanics

An illustrated comparison of processing methods for MR phase imaging and QSM: combining array coil signals and phase unwrapping

Phase Transitions in the Pooled Data Problem

A 2.2 NEF Neural-Recording Amplifier Using Discrete-Time Parametric Amplification

Interfacing Qubits via Cryo-CMOS Front Ends

High Signal-to-Noise Ratio Stimulated Brillouin Scattering Gain Spectrum Measurement

Polarisation pulling in Brillouin optical time-domain analysers

Frequency Comb Stabilization of Ultrafast Lasers by Opto-Optical Modulation of Semiconductors