Abstract: A system may include an optical source and an adjustable spatial light modulator coupled to the optical source. The system may further include a medium coupled to the adjustable spatial light modulator, and an optical detector coupled to the medium. The optical detector may obtain various optical signals that are transmitted through the medium at various predetermined spatial light modulations using the adjustable spatial light modulator. The system may further include a controller coupled to the optical detector and the adjustable spatial light modulator. The controller may train an electronic model using various synthetic gradients based on the optical signals.

Abstract: A training node may include a first processor coupled to a first memory, and a second processor coupled to a second memory. The training node may further include a synthetic gradient processing unit (SGPU) coupled to a third memory, the first processor and the second processor. A portion of an electronic model may be disposed in the first memory, the second memory, and the third memory. The SGPU may generate a synthetic gradient signal based on an error data signal from the first processor and the portion of the electronic model. The synthetic gradient signal may update the electronic model during a training operation for the electronic model.

Abstract: The present description relates to a stabilized interferometric system comprising: a light source (210) for emitting an initial beam of coherent light; a spatial light modulator (220) configured to receive at least a first part of said initial beam and input data (203) and configured to emit a spatially modulated beam resulting from a spatial modulation of a parameter of said first part of said initial beam based on said input data; a scattering medium (230) configured to receive said spatially modulated beam; a detection unit (240) configured to acquire an interference pattern (IN0) resulting from the interferences between randomly scattered optical paths taken by the spatially modulated beam through the scattering material; a control unit (250) configured to vary the frequency of the laser source in order to at least partially compensate a change in said interference pattern resulting from a change in at least one environmental parameter.

Abstract: A system may include an optical source and an adjustable spatial light modulator coupled to the optical source. The system may further include a medium coupled to the adjustable spatial light modulator. The system may further include a beam splitter coupled to the optical source and the adjustable spatial light modulator. The beam splitter may generate a first optical signal and a second optical signal using the optical source. The system may further include an optical detector coupled to the beam splitter and the medium. The optical detector may obtain a combined optical signal including a resulting optical signal and the second optical signal. The resulting optical signal may be produced by transmitting the first optical signal through the medium at a predetermined spatial light modulation using the adjustable spatial light modulator.

Abstract: A system may include an optical source and an adjustable spatial light modulator coupled to the optical source. The system may further include a medium coupled to the adjustable spatial light modulator. The system may further include a beam splitter coupled to the optical source and the adjustable spatial light modulator. The beam splitter may generate a first optical signal and a second optical signal using the optical source. The system may further include an optical detector coupled to the beam splitter and the medium. The optical detector may obtain a combined optical signal including a resulting optical signal and the second optical signal. The resulting optical signal may be produced by transmitting the first optical signal through the medium at a predetermined spatial light modulation using the adjustable spatial light modulator.

Abstract: A system may include an optical source and an adjustable spatial light modulator coupled to the optical source. The system may further include a medium coupled to the adjustable spatial light modulator, and an optical detector coupled to the medium. The optical detector may obtain various optical signals that are transmitted through the medium at various predetermined spatial light modulations using the adjustable spatial light modulator. The system may further include a controller coupled to the optical detector and the adjustable spatial light modulator. The controller may train an electronic model using various synthetic gradients based on the optical signals.

Abstract: According to one aspect, the present description relates to a stabilized interferometric system comprising a light source (210) for emitting an initial beam (B0) of coherent light and a spatial light modulator (220) configured to receive at least a first part of said initial beam and input data (203), and configured to emit a spatially modulated beam (B0m) resulting from a spatial modulation of a parameter of said first part of said initial beam based on said input data. The stabilized interferometric system further comprises a scattering medium (230) configured to receive said spatially modulated beam and a detection unit (240) configured to acquire an interference pattern (IN0) in a first detection plane (241) at an output of said scattering material, wherein said interference pattern results from the interferences between randomly scattered optical paths taken by the spatially modulated beam through the scattering material.

Abstract: The invention is related to a digital-data mixing apparatus (2), a data processing system (1) and an associated method for mixing digital-data. The digital-data mixing apparatus comprises, integrated in a housing (7), input means (8) for receiving a plurality of bits (I1 . . . In) of input digital data (4), electromagnetic emission means (9) for generating a modulated electromagnetic beam (15) wherein said input digital data (4) are converted in simultaneous modulations of the modulated electromagnetic beam (15), electromagnetic scattering means (10) for scattering the modulated electromagnetic beam (15) in a scattered electromagnetic beam (19), receiving means (11) for converting the scattered electromagnetic beam (19) in bits (O1 . . . Om) of output digital data (5), and output means (12) for providing said output digital data (5).

Abstract: The invention is related to a digital-data mixing apparatus (2), a data processing system (1) and an associated method for mixing digital-data. The digital-data mixing apparatus comprises, integrated in a housing (7), input means (8) for receiving a plurality of bits (I1 . . . In) of input digital data (4), electromagnetic emission means (9) for generating a modulated electromagnetic beam (15) wherein said input digital data (4) are converted in simultaneous modulations of the modulated electromagnetic beam (15), electromagnetic scattering means (10) for scattering the modulated electromagnetic beam (15) in a scattered electromagnetic beam (19), receiving means (11) for converting the scattered electromagnetic beam (19) in bits (O1 . . . Om) of output digital data (5), and output means (12) for providing said output digital data (5).

Abstract: A method for estimating an optical, electromagnetic or acoustic image having at least the successive steps of: scattering an incident optical, electromagnetic or acoustic signal using a multiple scattering medium corresponding to a known transmission matrix stored into a memory of an imaging system; measuring the scattered signal using a detector array and storing the measurements into the memory of the imaging system; and determining an estimated image having a number of image elements that is greater than the number of measurements, at full spatial bandwidth. The estimated image is determined from the measurements and the transmission matrix using a sparsity-promoting algorithm.