Abstract: A system for providing haptic feedback to a user, the system comprising a first piezoelectric transducer array comprising multiple piezoelectric transducers, respective ones of which being configured to generate a second signal at a second frequency, and at least one of which being configured to generate a first signal at a first frequency, and a second piezoelectric transducer array comprising multiple piezoelectric transducers, respective ones of which configured to receive the second signal, and at least one of which configured to generate a third signal to initiate generation of the first signal at the said at least one piezoelectric transducer of the first piezoelectric transducer array, the first frequency suitable for providing a haptic feedback signal for a user.

Abstract: An apparatus comprising: a void; an interferometer detector; and light guide means for guiding a light signal along a light path to the interferometer detector wherein the light path comprises a cantilever light guide that is supported such that a free-end can move within the void and the interferometer detector is configured to detect a deflection of the free-end of the cantilever light guide; and a reflector, wherein the cantilever light guide comprises a light outcoupler configured to out-couple the light signal to extend the light path from the cantilever light guide to the reflector.

Abstract: A method, apparatus and computer program, the method comprising: selecting a transaction entity for a mobile entity wherein a digital attribute account is associated with the mobile entity; and assigning one or more items of digital attributes from the digital attribute account associated with the mobile entity to the selected transaction entity such that the assigned items can only be used for transactions between the mobile entity and the selected transaction entity.

Abstract: The present application relates to EIC-INTEGRATED PICs. More particularly, various embodiments relate to EIC-INTEGRATED PICs enabling effective thermal management temperature control and heat removal.

Abstract: A fabricating process may include: producing a trench, in an encapsulated-silicon layer, in the location where a silicon-nitride core of the waveguide must be produced; then depositing a silicon-nitride layer on the encapsulated-silicon layer, the thickness of the deposited silicon-nitride layer being sufficient to completely fill the trench; then removing the silicon nitride situated outside of the trench to uncover an upper face with which the trench filled with silicon nitride is flush; then depositing a dielectric layer that covers the uncovered upper face in order to finalize the encapsulation of the silicon-nitride core and thus to obtain a mixed layer containing both the silicon and silicon-nitride cores encapsulated in dielectric.

Abstract: A method for on-silicon integration of a III-V-based material component includes providing a first substrate having a silicon-based optical layer including a waveguide, transferring a second substrate of III-V-based material on the optical layer, and forming the III-V component from the second substrate, so as to enable a coupling between the waveguide and the III-V component, by preserving a III-V-based material layer extending laterally. The method also includes forming by epitaxy from the III-V layer, an InP:Fe-based structure laterally bordering the III-V component, forming a layer including contacts configured to contact the III-V component, and transferring a third silicon-based substrate onto the layer including the contacts.

Abstract: A photonic chip including an optical coupler capable of transferring an optical signal between a first waveguide made of III-V material and a second waveguide made of silicon, this optical coupler including a first extension made of III-V material which extends the core of the first waveguide, a second extension made of silicon which extends the core of the second waveguide, and a SiGe inclusion buried inside of the second extension, this inclusion being made of SiGe whose chemical formula is Si1-xGex, where x is in the range between 0.2and 0.5, and being optically coupled, on a first side, to the first waveguide and, on a second opposite side, to the second waveguide.

Abstract: A photoacoustic apparatus, comprising: at least one optical amplifier, configured to produce light; at least one photonic integrated circuit, configured as a tunable light filter; light guiding means, wherein the at least one optical amplifier, at least one photonic integrated circuit and light guiding means are configured as an optical cavity to produce laser light having an optical path within the optical cavity; and at least one acoustic sensor configured to detect sound produced by analyte introduced into the optical path of the laser light.

Abstract: According to an example aspect of the present invention, there is provided a method, comprising: receiving an input ordered set of transactions after a genesis block or a preceding compressed block in a chain of blocks, generating a compressed block on the basis of the input ordered set of transactions, wherein processing of the compressed block results to an equivalent final state as processing of the input ordered set of transactions, and providing the compressed block to a distributed network for establishing a new chain epoch and replacing a set of uncompressed blocks associated with the input ordered set of transactions.

Abstract: An apparatus with a first photodetector and a second photodetector is provided. The apparatus is configured to receive light, and the first photodetector is configured to detect a first portion of the light. The first photodetector and the second photodetector are in a stacked arrangement and the apparatus is configured to pass a second portion of the light through the first photodetector to the second photodetector. The apparatus further includes an optical blocking filter configured to filter the second portion of the light prior to the second portion of the light arriving at the second photodetector.

Abstract: A system for providing haptic feedback to a user, the system comprising a first piezoelectric transducer array comprising multiple piezoelectric transducers, respective ones of which being configured to generate a second signal at a second frequency, and at least one of which being configured to generate a first signal at a first frequency, and a second piezoelectric transducer array comprising multiple piezoelectric transducers, respective ones of which configured to receive the second signal, and at least one of which configured to generate a third signal to initiate generation of the first signal at the said at least one piezoelectric transducer of the first piezoelectric transducer array, the first frequency suitable for providing a haptic feedback signal for a user.

Abstract: Apparatus, method, computer program product and computer readable medium are disclosed for trusted computing. A method comprises: at a trusted execution environment (TEE)-enabling processor, creating a signing TEE; performing a first measurement of the signing TEE, wherein the first measurement comprises at least one measurement of the code of the signing TEE, an identity of the signing TEE and a log of activities performing during the creation of the signing TEE; generating a first signature of the result of the first measurement; sending the result of the first measurement and the first signature to a public register such that a verification of the signing TEE can be made by means of the public register; wherein the signing TEE is configured to verify whether a first TEE is recorded on the public ledger.

Abstract: In accordance with an example embodiment of the present invention, there is provided an apparatus (160) comprising two inputs configured to receive two optical signals from two fibres (155, 157) from two respective optical transmitters, a beam splitter configured to convert the optical signals into dual rail form, the apparatus being configured to cause the optical signals to interfere with each other, a plurality of single photon detectors configured to measure the dual rail form optical signals, and at least one processing core configured to obtain compensation adjustment information concerning the two fibres and to inform the optical transmitters of the compensation adjustment information.

Abstract: In accordance with an example embodiment of the present invention, there is provided an apparatus (160) comprising two inputs configured to receive two optical signals from two fibres (155, 157) from two respective optical transmitters, a beam splitter configured to convert the optical signals into dual rail form, the apparatus being configured to cause the optical signals to interfere with each other, a plurality of single photon detectors configured to measure the dual rail form optical signals, and at least one processing core configured to obtain compensation adjustment information concerning the two fibres and to inform the optical transmitters of the compensation adjustment information.

Abstract: According to an example aspect of the present invention, there is provided a method, comprising: receiving a request for personal health data of a user, obtaining rules for authorizing access to the personal health data on the basis of a smart contract in a distributed network, requesting authorization for accessing the personal health data from one or more authorizers specified by the smart contract, providing received at least one authorization to the distributed network for verifying compliance to the smart contract rules and validating a smart contract transaction authorizing provision of the personal health data.

Abstract: According to an example aspect of the present invention, there is provided an apparatus comprising: an optic fibre input (31); a plurality of photonic detectors (34) comprising a nanowire and biased with an electric input; a set of modulators (35) connected to the optic fibre input (31), each of the modulators (35) being connected to one of the photonic detectors (34) for forming a modulated optical detector signal; and an optic fibre output (40) for the modulated optical detector signal. The optic fibre input (31), the photonic detectors (34), the set of modulators (35), and the optic fibre output (40) are formed on a single chip (1).

Abstract: Examples of the disclosure relate to an apparatus, method and computer program for determining biometric parameters. The apparatus comprises means for: obtaining a signal from a broadband detector in response to light that has been propagated through a subject being incident on the broad band detector. The signal that is obtained comprises at least a first component and a second component. The first component is provided in response to a first spectral and spatial distribution of light being incident on the broadband detector and the second component is provided in response to at least one other spectral and spatial distribution of light being incident on the broadband detector.

Abstract: Apparatus, method, computer program product and computer readable medium are disclosed for trusted computing. A method includes, at an isolated processor including a trusted execution environment and an isolated storage, receiving data encrypted with a first public key; decrypting the encrypted data with a first private key; performing calculation on the decrypted data by using an approved program; and providing the calculation result, wherein the approved program is authorized by a smart contract, a unique identifier of the smart contract is stored in the isolated processor, both the approved program and the isolated processor are verified by at least one participant of the smart contract, and the first public key and the first private key are generated by the isolated processor.

Abstract: An apparatus, method and computer program wherein the apparatus comprises:a plurality of quantum dot-graphene field effect transistors; circuitry configured to provide an individual drain-source bias voltage to each of a plurality of quantum dot-graphene field effect transistors, wherein different individual drain-source bias voltages have different parameters, to enable the plurality of quantum dot-graphene field effect transistors to detect light from a user of an apparatus; and circuitry configured to obtain output signals from each of a plurality of quantum dot-graphene field effect transistors where the output signal is dependent upon both the light detected by the quantum dot-graphene field effect transistor and the parameters of the drain-source bias voltage to enable the obtained output signals to be used as a scrambled identification signal of the user of the apparatus.

Abstract: A method includes: generating a first comb optical signal; generating a second comb optical signal; exciting a sample using in combination the first comb optical signal and the second comb optical signal; and detecting at the sample an acoustic response of the sample.