Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Stmicroelectronics S.a.

Stmicroelectronics (grenoble 2) Sas

Centre National De La Recherche Scientifique

Université Savoie Mont Blanc

Greenfield Technology

Franck Badets

Guillaume Jourdan

Yann Deval

Jean-Baptiste Begueret

Adrien Morel

Nicolas Goux

Didier Belot

Patrice Rey

Gaël Pillonnet

Serge Ramet

Loic Joet

Yvain Thonnart

Sébastien Hentz

Michel Ayraud

Marc Sansa Perna

Gérard Billiot

Adrien Badel

Loïc Sibeud

Baptiste Jadot

Nicolas Regimbal

Bernard Riondet

Emmanuel Hardy

Jean-Baptiste Casanova

Emna Chabchoub

David Marchaland

Vincent Lagareste

Dominique Monnier-Bourdin

Pierre Melchior

Maxime Cozzi

Houssein Elmi Dawale

Ali Mostafa

Quentin Schmidt

A quantum device comprising a plurality of qubits, a demultiplexing circuit, a common transmission line for transmitting qubit read signals to the demultiplexing circuit, and, for each qubit of the plurality, one quantum electrometer coupled to the qubit with a view to transmitting, over the common transmission line, a signal depending on a current state of the qubit and on a periodic excitation applied to the quantum electrometer. The quantum device is noteworthy in that, the periodic excitations transmitted to a group of qubits of the device being transmitted with an identical frequency, the device comprises phase-shifting means that introduce distinct phase shifts and optionally amplitude-attenuating means that introduce amplitude differences into the excitations respectively applied to the various quantum electrometers.

Device for reading and decoding quantum information

A quantum device includes multiple spin qubits, multiple electrometers, each being capacitively coupled to one of the spin qubits, multiple injection-locked oscillators, each being coupled to one of the electrometers and designed to transmit an excitation signal to the electrometer to which it is coupled, each excitation signal having a different frequency, an amplification circuit comprising at least one amplifier, wherein the device comprises a feedback loop coupling the output of the amplification circuit to an input of each injection-locked oscillator and through which an injection signal flows, each injection-locked oscillator being designed to receive the injection signal and, as a function of the injection signal, maintain or decrease its excitation signal.

Quantum device

A multi-injection phase-summing circuit includes an oscillator having a natural frequency of oscillation F, a reference injection interface circuit controlled by a reference synchronization signal at a reference frequency and at least one additional injection interface circuit controlled by a secondary synchronization signal at the reference frequency, each injection interface circuit having a variable injection parameter, the secondary synchronization signals each being phase shifted with respect to the reference synchronization signal, the oscillator being configured to generate an output signal at the reference frequency and phase shifted with respect to the reference synchronization signal by a phase shift dependent on a sum of the respective phase shifts of each secondary synchronization signal with respect to the reference synchronization signal, said sum being weighted by the injection parameters.

Multi-injection phase-summing circuit

The present disclosure relates to a converter () converting a voltage (Vin) into time. The converter comprises a direct path () including a first injection-locked oscillator () and a first circuit (). The first circuit is configured for receiving an output signal (Φsens) of the first oscillator and a reference signal (Φ), and for providing at least a first pulse signal (out) determined by a phase shift between the output signal (Φsens) of the first oscillator and the reference signal (Φ). The converter further comprises a feedback loop () comprising a second circuit () configured for integrating said at least one first pulse signal (out).

Analog-to-time converter

A device for recovering or dampening vibratory energy from a mechanical resonator, comprising:

Device for recovering or damping the vibratory energy of a resonant mechanical element

A detecting device configured to detect chemical or biological species in a given environment, includes a matrix-array sensor formed from opto-mechanical discs that are optically and mechanically resonant, able to bind to species of the environment, and arranged in rows and columns. The opto-mechanical discs of a given row are optically coupled to the same optical waveguide. Actuating electrodes are provided in order to ensure the mechanical resonance of the opto-mechanical discs. One p-n junction is associated with each opto-mechanical disc, the junctions of a given column being electrically connected to the same biasing electrode, so as to block the flow through the corresponding opto-mechanical disc of a parasitic electrical current. A control circuit is configured to forward bias, during a time window of read-out of a disc of interest, the p-n junction of a disc of interest so as to place, via a thermo-optical effect, its resonant wavelength at a working wavelength, such that an optical signal propagating through the optical waveguide associated with the disc of interest is amplitude modulated.

Device and method for detecting chemical or biological species

A bandpass filter configured to receive a temporally modulated periodic input signal Vin(t), and to deliver an output signal Vout(t), and includes, in combination: a phase comparator configured to receive, on a first input, the temporally modulated periodic input signal Vin(t) as first signal, and to generate an output signal with a variable duty cycle; coupled to an injection-locked oscillator configured to receive as input, the output signal from the phase comparator, and to generate a signal Vr(t) that is phase-offset with respect to the output signal from the phase comparator; the phase-offset signal being applied to a second input of the phase comparator as second input signal; and the output signal from the phase comparator being the output signal Vout(t) from the bandpass filter and being representative of the phase difference between the two input signals Vin(t) and Vr(t).

Bandpass filter

A temperature sensor supplying a measurement signal varying linearly to within 10% as a function of the temperature at least over a temperature range, including an oscillator supplied by a supply voltage and supplying a first oscillating signal, said oscillator including first MOS transistors, the voltage at each internal node of the oscillator having a dynamic range equal to the supply voltage, the measuring signal corresponding to the supply voltage.

Temperature sensor

Injection-locked oscillator with variable load impedance

A method of calibrating a delay generation circuit and the corresponding circuit.

Calibration of a delay circuit

An interface circuit for a sensor including: a first injection-locked oscillator having: a first input coupled to a sensor, a free-running oscillation frequency of the first injection-locked oscillator being controlled by a signal from the sensor; and a second input coupled to receive a synchronization signal at a reference frequency, the first injection-locked oscillator being adapted to generate an output signal at said reference frequency, the output signal being phase shifted with respect to the synchronization signal as a function of the signal from the sensor.

Sensor interface for hostile environments

A measurement circuit for a sensor, the measurement circuit includes at least one detection branch including at least a first series of at least one dipole and a second series of at least one dipole, the series being connected in parallel and connected at their inputs to a common input terminal, each series of dipole being connected to a distinct output terminal, and an electronic circuit including a bias circuit configured to apply a bias current to the detection branch from the input terminal, and a read circuit configured to impose on each output terminal the same potential referred to as the 'reference potential' (V); the electronic circuit including a determination circuit for determining variations in impedances of each series of dipole of the detection branch on the basis of the current applied to each output terminal by the read circuit so as to keep the potentials equal.

Measurement circuit

A phase-locked loop double-point modulator may include a frequency divider having a ratio which can be changed by a first modulation signal, and an oscillator, a frequency of which can be changed by a second modulation signal correlated to the first modulation signal. A calibration circuit may be configured, in a calibration mode, to match the gains of the first and second modulation signals based on frequency measurements of the oscillator for two different calibration values of the second modulation signal. The phase-locked double-point modulator may also include an attenuator having a constant ratio greater than 1 and placed in the path of the second modulation signal, and a selector switch configured to be controlled by the calibration circuit to reduce the ratio of the attenuator in the calibration mode.

Double-point modulator with accurate and fast gain calibration

A fractional frequency divider including a frequency division unit for generating a reduced frequency timing signal having j pulses for every k pulses of an original timing signal, wherein j and k are each integers; and phase correction circuitry adapted to selectively shift each jth pulse of the reduced frequency timing signal by a first fixed time period.

Fractional frequency divider

An embodiment of the invention relates to a method for transmission by ultra-wide-band pulses of digital data formed with a flow of information elements, this method comprising at least one operation including sequentially encoding the information elements by modulating an oscillating signal In order to avoid the use of a bandpass filter, the oscillating signal is modulated in amplitude depending on the identity or dissimilarity of each information element relative to the preceding information element.

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Voiron, France

Franck Badets