Abstract: A process for the hetero-integration of a semiconductor material of interest on a silicon substrate, includes a step of structuring the substrate which comprises a step of producing a growth mask on the surface of the silicon substrate, the growth mask comprising a plurality of masking patterns, two masking patterns being separated by a trench wherein the silicon substrate is exposed; a step of forming a two-dimensional buffer layer made of a 2D material, the buffer layer being free of side bonds on its free surface and being formed selectively on at least one silicon plane of [111] orientation in at least one trench, the step of forming a buffer layer being performed after the structuring step; a step of forming at least one layer of a semiconductor material of interest on the buffer layer. The semiconductor material of interest is preferably a IV-IV, III-V, II-VI semiconductor material and/or a 2D semiconductor material.

Abstract: The invention is directed to a Quantum Random Number Generator comprising an emitting device (110) triggered by a signal representing an input bit x and adapted to generate and send a physical system (130) characterized by one of two possible quantum states determined by said input bit x, a measurement device (120) adapted to detect said physical system, to identify the quantum state of said physical system through an unambiguous state discrimination measurement and to generate an output b first representing whether the quantum state has been identified or not and, if it has been identified, which quantum state among the two possible quantum states was detected by the unambiguous state discrimination measurement to a processing device (140), the processing device (140) being adapted to estimate the entropy of the output b given the probabilities p(b|x) representing the probability of observing output b for a state preparation x, and a randomness extraction device (150) adapted to extract final random bit stre

Abstract: A process for epitaxying GaSe on a [111]-oriented silicon substrate, includes a step of selecting a [111]-oriented silicon substrate resulting from cutting a silicon bar in a miscut direction which is one of the three [11-2] crystallographic directions, the miscut angle (?) being smaller than or equal to 0.

Abstract: A process for epitaxying GaSe on a [111]-oriented silicon substrate, includes a step of selecting a [111]-oriented silicon substrate resulting from cutting a silicon bar in a miscut direction which is one of the three [11-2] crystallographic directions, the miscut angle (?) being smaller than or equal to 0.

Abstract: A process for the hetero-integration of a semiconductor material of interest on a silicon substrate, includes a step of structuring the substrate which comprises a step of producing a growth mask on the surface of the silicon substrate, the growth mask comprising a plurality of masking patterns, two masking patterns being separated by a trench wherein the silicon substrate is exposed; a step of forming a two-dimensional buffer layer made of a 2D material, the buffer layer being free of side bonds on its free surface and being formed selectively on at least one silicon plane of [111] orientation in at least one trench, the step of forming a buffer layer being performed after the structuring step; a step of forming at least one layer of a semiconductor material of interest on the buffer layer. The semiconductor material of interest is preferably a IV-IV, III-V, II-VI semiconductor material and/or a 2D semiconductor material.

Abstract: The invention is directed to a Quantum Random Number Generator comprising an emitting device (110) triggered by a signal representing an input bit x and adapted to generate and send a physical system (130) characterized by one of two possible quantum states determined by said input bit x, a measurement device (120) adapted to detect said physical system, to identify the quantum state of said physical system through an unambiguous state discrimination measurement and to generate an output b first representing whether the quantum state has been identified or not and, if it has been identified, which quantum state among the two possible quantum states was detected by the unambiguous state discrimination measurement to a processing device (140), the processing device (140) being adapted to estimate the entropy of the output b given the probabilities p(b|x) representing the probability of observing output b for a state preparation x, and a randomness extraction device (150) adapted to extract final random bit stre

Abstract: Eddy current retarder equipment (1) able to be carried on board a vehicle, includes: a stator assembly (2), including inductor windings (23) forming a circuit (4), a rotor assembly (3) designed to be mounted on a transmission shaft of the vehicle, including an armature (31) facing the inductor windings (23), control elements (6) for establishing a linear setpoint (?), excitation elements (7) for exciting the inductor circuit (4) from an electric power source (5) of the vehicle as a function of the setpoint (?), a speed sensor (9) for supplying information relating to the rotational speed (?) of the rotor assembly (3), a sensor (10) of the strength of current supplied to the inductor circuit (4), processing elements (8) for estimating, at a given moment (t), the retarding torque supplied by the equipment (1).

Abstract: A device and a method for synchronizing entanglement sources with optical pump in a quantum communication network are disclosed. The device includes a pulsed optical source allowing emission of telecom wavelength optical clock pulses distributed in parallel to the entanglement sources to ensure synchronization of the entanglement sources; and for each of the entanglement sources, a frequency conversion device, allowing frequency conversion of the distributed telecom wavelength optical clock pulses to a wavelength adapted to optically pump the entanglement source. The method includes emitting and distributing in parallel, to the entanglement sources, telecom wavelength optical clock pulses; and locally, at each of the entanglement sources, frequency converting the telecom wavelength optical clock pulses to a wavelength adapted to optically pump the entanglement source.

Abstract: Eddy current retarder equipment (1) able to be carried on board a vehicle, includes: a stator assembly (2), including inductor windings (23) forming a circuit (4), a rotor assembly (3) designed to be mounted on a transmission shaft of the vehicle, including an armature (31) facing the inductor windings (23), control elements (6) for establishing a linear setpoint (?), excitation elements (7) for exciting the inductor circuit (4) from an electric power source (5) of the vehicle as a function of the setpoint (?), a speed sensor (9) for supplying information relating to the rotational speed (?) of the rotor assembly (3), a sensor (10) of the strength of current supplied to the inductor circuit (4), processing elements (8) for estimating, at a given moment (t), the retarding torque supplied by the equipment (1).

Abstract: According to one aspect, the invention relates to a device (20) for synchronizing optical pumping entanglement sources (141, 142) in a quantum communication network, including a pulsed light source (21) enabling the emission of telecom-wavelength light pulses (I1,I2), which are distributed in parallel with all of the entanglement sources in order to provide an optical clock common to said entanglement sources and including, for each entanglement source, a device (243, 253) for converting the frequency of the distributed light pulse, thereby enabling a light pulse to be generated at a wavelength adapted to the optical pumping of the entanglement source in order to generate pairs of entangled photons.