Abstract: The disclosed technology relates to a logic device based on spin waves. In one aspect, the logic device includes a spin wave generator, a waveguide, at least two phase shifters, and an output port. The spin wave generator is connected with the waveguide and is configured to emit a spin wave in the waveguide. The at least two phase shifters are connected with the waveguide at separate positions such that, when a spin wave is emitted by the spin wave generator, it passes via the phase shifters. The at least two phase shifters are configured to change a phase of the passing spin wave. The output port is connected with the wave guide such that the at least two phase shifters are present between the spin wave generator and the output port.

Abstract: According to an aspect of the present inventive concept there is provided a qubit device comprising: a semiconductor substrate layer; a set of control gates configured to define a row of electrostatically confined quantum dots along the substrate layer, each quantum dot being suitable for holding a qubit; and a set of nanomagnets arranged in a row over the substrate layer such that a nanomagnet is arranged above every other quantum dot of the row of quantum dots, wherein each nanomagnet has an out-of-plane magnetization with respect to the substrate layer and wherein every other quantum dot is subjected to an out-of-plane magnetic field generated by a respective nanomagnet, such that a qubit spin resonance frequency of every other quantum dot is shifted with respect to an adjacent quantum dot of the row of quantum dots.

Abstract: An arrangement for use in a matrix-vector-multiplier, comprising a stack of material layers arranged on a substrate, and a waveguide element formed in at least one material layer in the stack is disclosed. In one aspect, the arrangement further comprises a transducer arrangement which is coupled to the waveguide element. The transducer arrangement is configured to generate and detect spin wave(s) in the waveguide element, and wherein the waveguide element is configured to confine and to provide interference of the at spin wave(s) propagating therein. The arrangement further comprises a control mechanism comprising at least one control element coupled to the waveguide element, and a direct current electric source coupled to the at least one control element. The control mechanism, via the at least one control element, is configured to modify the phase velocity of the spin wave(s) propagating in the waveguide element.

Abstract: A magnetoelectric (“ME”) device is disclosed. In one aspect, the ME device includes a first piezoelectric substrate portion and a second piezoelectric substrate portion; a magnetostrictive body with a magnetization oriented in a first direction, the magnetostrictive body arranged on and extending between the first and second portions; a pair of input electrodes arranged on the first portion; and a pair of output electrodes arranged on the second portion. The input electrodes are configured to induce a fringing electric field extending between the input electrodes via the first portion, thereby causing a deformation of the first portion which in turn causes a deformation of the magnetostrictive body such that the magnetization thereof is re-oriented to a second direction due to a reverse magnetostriction. An output voltage is induced between the output electrodes by a deformation of the second portion caused by the re-orientation of the magnetization of the magnetostrictive body.

Abstract: The disclosed technology relates to a logic device based on spin waves. In one aspect, the logic device includes a spin wave generator, a waveguide, at least two phase shifters, and an output port. The spin wave generator is connected with the waveguide and is configured to emit a spin wave in the waveguide. The at least two phase shifters are connected with the waveguide at separate positions such that, when a spin wave is emitted by the spin wave generator, it passes via the phase shifters. The at least two phase shifters are configured to change a phase of the passing spin wave. The output port is connected with the wave guide such that the at least two phase shifters are present between the spin wave generator and the output port.

Abstract: According to an aspect of the present inventive concept there is provided a qubit device comprising: a semiconductor substrate layer; a set of control gates configured to define a row of electrostatically confined quantum dots along the substrate layer, each quantum dot being suitable for holding a qubit; and a set of nanomagnets arranged in a row over the substrate layer such that a nanomagnet is arranged above every other quantum dot of the row of quantum dots, wherein each nanomagnet has an out-of-plane magnetization with respect to the substrate layer and wherein every other quantum dot is subjected to an out-of-plane magnetic field generated by a respective nanomagnet, such that a qubit spin resonance frequency of every other quantum dot is shifted with respect to an adjacent quantum dot of the row of quantum dots

Abstract: A resonator for spin waves, wherein the resonator comprises a stack of material layers arranged on a substrate, a waveguide structure formed in at least one material layer in the stack and configured to propagate a spin wave and to confine a spin wave propagating in a waveguide element of the waveguide structure, such that a spin wave of a selected frequency propagating in the waveguide structure is arranged to resonate in the waveguide structure. The resonator further comprises a control mechanism formed in at least one material layer in the stack and configured to adapt at least one property of the waveguide structure for tuning the resonance frequency of the waveguide structure.

Abstract: An arrangement for use in a matrix-vector-multiplier, comprising a stack of material layers arranged on a substrate, and a waveguide element formed in at least one material layer in the stack is disclosed. In one aspect, the arrangement further comprises a transducer arrangement which is coupled to the waveguide element. The transducer arrangement is configured to generate and detect spin wave(s) in the waveguide element, and wherein the waveguide element is configured to confine and to provide interference of the at spin wave(s) propagating therein. The arrangement further comprises a control mechanism comprising at least one control element coupled to the waveguide element, and a direct current electric source coupled to the at least one control element. The control mechanism, via the at least one control element, is configured to modify the phase velocity of the spin wave(s) propagating in the waveguide element.

Abstract: The disclosed technology generally relates to computation devices, and more particularly to majority gate devices configured for computation based on spin waves. In one aspect, a majority gate device comprises cells that are configurable as spin wave generators or spin wave detectors. The majority gate device comprises an odd number of spin wave generators, and at least one spin wave detector. The majority gate device additionally comprises a waveguide adapted for guiding spin waves generated by the spin wave generators. The spin wave generators and the at least one spin wave detector are positioned in an inline configuration along the waveguide such that, in operation, interference of the spin waves generated by the spin wave generators can be detected by the at least one spin wave detector. The interference of the spin waves corresponds to a majority operation of the spin waves generated by the spin wave generators.

Abstract: The present disclosure relates to a tunable magnonic crystal device comprising a spin wave waveguide, a magnonic crystal structure in or on the spin wave waveguide, and a magneto-electric cell operably connected to the magnonic crystal structure. The magnonic crystal structure is adapted for selectively filtering a spin wave spectral component of a spin wave propagating through the spin wave waveguide so as to provide a filtered spin wave. The magneto-electric cell comprises an electrode for receiving a control voltage, and adjusting the control voltage controls a spectral parameter of the spectral component of the spin wave via an interaction, dependent on the control voltage, between the magneto-electric cell and a magnetic property of the magnonic crystal structure.

Abstract: The disclosed technology generally relates to computation devices, and more particularly to majority gate devices configured for computation based on spin waves. In one aspect, a majority gate device comprises cells that are configurable as spin wave generators or spin wave detectors. The majority gate device comprises an odd number of spin wave generators, and at least one spin wave detector. The majority gate device additionally comprises a waveguide adapted for guiding spin waves generated by the spin wave generators. The spin wave generators and the at least one spin wave detector are positioned in an inline configuration along the waveguide such that, in operation, interference of the spin waves generated by the spin wave generators can be detected by the at least one spin wave detector. The interference of the spin waves corresponds to a majority operation of the spin waves generated by the spin wave generators.

Abstract: The present disclosure relates to a tunable magnonic crystal device comprising a spin wave waveguide, a magnonic crystal structure in or on the spin wave waveguide, and a magneto-electric cell operably connected to the magnonic crystal structure. The magnonic crystal structure is adapted for selectively filtering a spin wave spectral component of a spin wave propagating through the spin wave waveguide so as to provide a filtered spin wave. The magneto-electric cell comprises an electrode for receiving a control voltage, and adjusting the control voltage controls a spectral parameter of the spectral component of the spin wave via an interaction, dependent on the control voltage, between the magneto-electric cell and a magnetic property of the magnonic crystal structure.