Abstract: The invention relates to a light source comprising a photonic wire having a single-mode core and adapted to support an optical mode which is degenerate in polarization, comprising an emitter of a pair of photons which are intended to be entangled in polarization. The photonic wire comprises a cladding which is asymmetrical in rotation and extends along a principal transverse axis. Furthermore, the light source comprises a correction device adapted to induce by electrostatic effect a mechanical deformation of the photonic wire in a plane parallel to the substrate, along a deformation axis forming an angle of inclination of between 0° and 90°, these values being exclusive, with respect to the principal transverse axis, the mechanical deformation leading to mechanical strains experienced by the emitter, thus improving the degree of entanglement of the photon pair.

Abstract: A single-photon source including a monomode photonic wire wherein a single-photon emitter is located, the photonic wire being formed of two coaxial parts that are distinct and spaced from one another along the longitudinal axis, including a lower part resting in contact with a support substrate and including the single-photon emitter.

Abstract: An embodiment includes receiving an explanation request that includes an undesired output resulting from an input case of a hierarchical rule-based decision policy specified by an acyclic dependency graph, and further includes an alternative desired output from the hierarchical rule-based decision policy. The embodiment also includes computing a network of intermediate explanations for required ranges of respective decision nodes that achieve the desired output from the hierarchical rule-based decision policy. The embodiment also includes computing a user-facing explanation that includes a range constraint for achieving the desired output by aggregating the intermediate explanations. The embodiment also includes transmitting, as a response to the explanation request, an explanation for achieving the desired output from the hierarchical rule-based decision policy based on the user-facing explanation.

Abstract: A waveguide including a multimode optical fiber joined to a structure for concentrating the guided modes spatially. The concentrating structure exhibits an adiabatic variation in its transverse dimension dpc in the direction of its exit face, and its transverse dimension dpc has a value dpc,in at least equal to a value dfc of the transverse dimension dfc of the core of the multimode optical fiber at the second face thereof.

Abstract: The invention relates to an optoelectronic emitter with angular scanning, comprising an array of resonant cavities (20i) each extending longitudinally along a first axis (X), each designed to emit, via their emission face, an elementary light beam at a resonant frequency fr(i)) specific to each resonant cavity 20i, in response to a pulsed optical excitation signal designed to illuminate and to excite all of the resonant cavities 20i, simultaneously, and configured to exhibit a variation in resonant frequencies fr(i) from one resonant cavity 20i to the next, along a second axis (Y) of the array perpendicular to the first axis (X), the angular scanning of the optoelectronic emitter (1) then taking place in a plane perpendicular to that of the substrate (3) and containing the second axis (Y).

Abstract: A waveguide including a multimode optical fiber joined to a structure for concentrating the guided modes spatially. The concentrating structure exhibits an adiabatic variation in its transverse dimension dpc in the direction of its exit face, and its transverse dimension dpc has a value dpc,in at least equal to a value dfc of the transverse dimension dfc of the core of the multimode optical fiber at the second face thereof.

Abstract: The invention relates to a light source 1 comprising a photonic wire 20 having a single-mode core 21 and adapted to support an optical mode which is degenerate in polarization, comprising an emitter 24 of a pair of photons which are intended to be entangled in polarization. The photonic wire 20 comprises a cladding 25 which is asymmetrical in rotation and extends along a principal transverse axis Atg. Furthermore, the light source 1 comprises a correction device 50 adapted to induce by electrostatic effect a mechanical deformation of the photonic wire 20 in a plane parallel to the substrate 10, along a deformation axis Ad forming an angle of inclination of between 0° and 90°, these values being exclusive, with respect to the principal transverse axis Atg, the mechanical deformation leading to mechanical strains experienced by the emitter 24, thus improving the degree of entanglement of the photon pair.

Abstract: A single-photon source including a monomode photonic wire wherein a single-photon emitter is located, the photonic wire being formed of two coaxial parts that are distinct and spaced from one another along the longitudinal axis, including a lower part resting in contact with a support substrate and including the single-photon emitter.

Abstract: The optoelectronic arrangement comprises a semiconductor nanowire intended to participate in the processing, notably in a reception and/or an emission, of a light concerned and a mirror reflecting the light concerned. The semiconductor nanowire comprises a first section and a second section, and the mirror surrounds, at least longitudinally, the first section of the semiconductor nanowire, said second section extending out of the mirror.

Abstract: The present invention relates to a single photon source 1800 comprising a tapered nanowire 1802, where the nanowire 1802 is made of a semiconductor material, a first electrode 1828 and second electrode 1814, where the electrodes are electrically coupled to a photon emitter 1804 embedded in the nanowire 1802 and wherein the photon emitter 1804 is capable of emitting a single photon when an activation voltage is applied between the electrodes. In advantageous embodiments of the invention, the nanowire is encircled by air or vacuum, such that advantage can be taken of the resultant large ratio between a refractive index of the nanowire and the encircling material, air. Another advantageous feature might be that the first and second electrodes are optically transparent, such that they can be used as part of a reflective element or anti-reflective element.

Abstract: A tuneable laser source includes a first confinement layer forming a Bragg reflector for a pump wave; an active layer made of non-linear semiconducting material, the refraction index of the active layer being greater than the refraction index of the first confinement layer; a second confinement layer, the refraction index of the second confinement layer being less than the refraction index of the active layer; a base with a first width; and a ribbon with a second width less than the first width. The second width is less than 10 ?m; the active layer includes at least one plane of quantum boxes capable of emitting a pump wave and the ribbon includes at least the part of the active layer including the quantum boxes plane and the second confinement layer.

Abstract: A tuneable laser source includes a first confinement layer forming a Bragg reflector for a pump wave; an active layer made of non-linear semiconducting material, the refraction index of the active layer being greater than the refraction index of the first confinement layer; a second confinement layer, the refraction index of the second confinement layer being less than the refraction index of the active layer; a base with a first width; and a ribbon with a second width less than the first width. The second width is less than 10 ?m; the active layer includes at least one plane of quantum boxes capable of emitting a pump wave and the ribbon includes at least the part of the active layer including the quantum boxes plane and the second confinement layer.

Abstract: A laser device for emitting THz waves includes a heterostructure with a substantially cylindrical shape including a first layer in an optically nonlinear semiconductor material including emitters to emit in two whispering gallery modes that are confined in the first layer and enabling the generation within the first layer of radiation in an electromagnetic THz whispering gallery mode, a second and a third layer in a semiconductor material each presenting an optical index that is smaller than the index of the material used for the first layer and a metal layer situated at one end of the heterostructure. The heterostructure includes in its center a hole with a substantially cylindrical shape extending over the entire height of the heterostructure.

Abstract: The optoelectronic arrangement comprises a semiconductor nanowire intended to participate in the processing, notably in a reception and/or an emission, of a light concerned and a mirror reflecting the light concerned. The semiconductor nanowire comprises a first section and a second section, and the mirror surrounds, at least longitudinally, the first section of the semiconductor nanowire, said second section extending out of the mirror.

Abstract: A laser device having a wave emission within a frequency range of 0.5 to 5 THz, includes a semiconductor heterostructure having a cylindrical form with a circular cross-section and including: a first optically nonlinear semiconductor material layer including an emitting medium configured to emit at least two optical whispering gallery modes belonging to the near-infrared spectrum, the two whispering gallery modes being confined within the first layer and enabling the generation, within the first layer, of radiation within an electromagnetic whispering gallery mode having a frequency of 0.

Abstract: A laser device for emitting THz waves includes a heterostructure with a substantially cylindrical shape including a first layer in an optically nonlinear semiconductor material including emitters to emit in two whispering gallery modes that are confined in the first layer and enabling the generation within the first layer of radiation in an electromagnetic THz whispering gallery mode, a second and a third layer in a semiconductor material each presenting an optical index that is smaller than the index of the material used for the first layer and a metal layer situated at one end of the heterostructure. The heterostructure includes in its center a hole with a substantially cylindrical shape extending over the entire height of the heterostructure.

Abstract: The present invention relates to a single photon source 1800 comprising a tapered nanowire 1802, where the nanowire 1802 is made of a semiconductor material, a first electrode 1828 and second electrode 1814, where the electrodes are electrically coupled to a photon emitter 1804 embedded in the nanowire 1802 and wherein the photon emitter 1804 is capable of emitting a single photon when an activation voltage is applied between the electrodes. In advantageous embodiments of the invention, the nanowire is encircled by air or vacuum, such that advantage can be taken of the resultant large ratio between a refractive index of the nanowire and the encircling material, air. Another advantageous feature might be that the first and second electrodes are optically transparent, such that they can be used as part of a reflective element or anti-reflective element.

Abstract: A laser device having a wave emission within a frequency range of 0.5 to 5 THz, includes a semiconductor heterostructure having a cylindrical form with a circular cross-section and including: a first optically nonlinear semiconductor material layer including an emitting medium configured to emit at least two optical whispering gallery modes belonging to the near-infrared spectrum, the two whispering gallery modes being confined within the first layer and enabling the generation, within the first layer, of radiation within an electromagnetic whispering gallery mode having a frequency of 0.

Abstract: The invention relates to a device for opening, by way of force, an operating sash (100) which has a length (L) and which comprises an opening part (102) and a fixed frame (104), such as a door or window, comprising at least one frame (2) whose length can be extended and which is formed by one or several sliding parts (10,20) which can be adapted to the length (L) of the operating sash; a corner (12,22) which can be depressed and which is arranged in between the frame (104) and the opening part (102), a spreader ram (50) enabling the penetration of said corner (12,22) between the frame (104) and the opening part (102) in order to open the operating sash (100) by way of force; and a push ram (30) placed in a substantially perpendicular position with respect to the frame (2). The rams (30;50) can be maneuvered at a distance with the aid of a remote control (80). The invention is characterized in that the push ram (30) is a continually thrusting percussion ram acting in a repetitive reciprocating manner.

Abstract: The invention relates to a device for opening, by means of force, an operating sash (100) which has a length (L) and which comprises an opening part (102) and a fixed frame (104), such as a door or window, comprising at least one frame (2) whose length can be extended and which is formed by one or several sliding parts (10,20) which can be adapted to the length (L) of the operating sash; a corner (12,22) which can be depressed and which is arranged in between the frame (104) and the opening part (102), a spreader ram (50) enabling the penetration of said corner (12,22) between the frame (104) and the opening part (102) in order to open the operating sash (100) by means of force; and a push ram (30) placed in a substantially perpendicular position with respect to the frame (2). The rams (30;50) can be maneuvered at a distance with the aid of a remote control (80). The invention is characterized in that the push ram (30) is a continually thrusting percussion ram acting in a repetitive reciprocating manner.