An optical neural network is constructed based on photonic integrated circuits to perform neuromorphic computing. In the optical neural network, matrix multiplication is implemented using one or more optical interference units, which can apply an arbitrary weighting matrix multiplication to an array of input optical signals. Nonlinear activation is realized by an optical nonlinearity unit, which can be based on nonlinear optical effects, such as saturable absorption. These calculations are implemented optically, thereby resulting in high calculation speeds and low power consumption in the optical neural network.

A device including a programmable photonic processor configured to operate on optical pulses to perform computational sequences of linear operations and nonlinear operations each based on a parametric nonlinear optical process; a memory coupled to the processor and programmable to store or accumulate the analog optical pulse amplitudes of the optical pulses; a control circuit controlling the transfer of the analog optical pulse amplitudes between the processor and the memory according to a computation schedule; and wherein information is multiplexed in time by encoding the information onto the analog optical pulse amplitudes of the optical pulses occupying time bins at a fixed repetition rate such that the optical pulses, occupying different ones of the time bins, can be made to interact using appropriate temporal delays.

A method includes: providing input information in an electronic format; converting the electronic input information into an optical input vector; optically transforming the optical input vector into an optical output vector based on an optical matrix multiplication; converting the optical output vector into an electronic format; and electronically applying a non-linear transformation to the electronically converted optical output vector to provide output information in an electronic format. For example, a set of input values are encoded on respective optical signals. For each of at least two subsets of optical signals, a copying module splits the subset into multiple copies of the optical signals. For each copy of a first subset of optical signals, a corresponding multiplication module multiplies the optical signals of the first subset by matrix element values using optical amplitude modulation. A summation module produces an electrical signal representing a sum of the results of the multiplication modules.

An optical reservoir computing (ORC) system has a near-UV light emitting diode modulator (LED-M), a beam expander (BE), a fluorescer array (FA), an optical integrator (OA), a liquid crystal spatial light modulator (LC-SLM), and a photo-detector array (PDA). The LED-M receives an input electrical signal and outputs an optical signal passing through the BE, being made incident upon the FA, being processed in the OA, and being multiplexed onto the LC-SLM. Non-Linearity is introduced by overlapping responses to input signals by the FA. High Dimensionality is provided by the random but fixed time-wavelength multiplexing onto an imaging plane by a Fresnel-Kohler Integrator (FKI). Fading Memory is provided by different decay time constants of the fluorescers. A method of using the ORC system comprises the steps of minimizing an error function of difference between a measured state of the PDA and a target state of the PDA by a regression model.

Provided is a novel beam delivery system for quantum computing applications that includes a beam delivery photonic integrated circuit on a chip and an optical relay assembly. The beam delivery photonic integrated circuit on a chip may contain one or more layers, and a layer may contain one or more inputs connecting one or more outputs. The optical relay assembly receives a beam or beams from one or more outputs from a layer of the beam delivery photonic integrated circuit. The optical relay assembly focuses each received beam on a corresponding position of an atomic object confinement apparatus.

There is described herein a quantum computing system comprising a quantum control system configured for generating microwave signals up-converted to optical frequencies, at least one optical fiber coupled to the quantum control system for carrying the up-converted microwave signals, and a quantum processor disposed inside a cryogenics apparatus and coupled to the at least one optical fiber for receipt of the up-converted microwave signals. The quantum processor comprises at least one optical-to-microwave converter configured for down-converting the up-converted microwave signals, and a plurality of solid-state quantum circuit elements coupled to the at least one optical-to-microwave converter and addressable by respective ones of the down-converted microwave signals.

The present invention provides optical computing by means of fast Fourier transform Integration on Silicon On Insulator chip technology with implementation in the analog and temporal domain. This is done by cascading (N2) stages of delayed interferometers (couplers and phase shifters) where a parallel set of N time samples are taken and using the delay lines and phase of the optical components (constructive/deconstructive interference) the DFT is computed. The Optical Fast Fourier Transform (OFFT) design was built on passive components (22 couplers: cascaded Mach Zehnder Interferometer) used for addition and subtraction through optical interference, waveguides with short path differences are used for phase shifting and waveguides with long path differences are used for signal delay based on the needed number of outputs. Since the OFFT is a system of imbalanced interferometers, there are additional bends designed to compensate for the difference in power ratios of the arms.

The present disclosure provides methods and systems for performing non-classical computations. The methods and systems generally use a plurality of spatially distinct optical trapping sites to trap a plurality of atoms, one or more electromagnetic delivery units to apply electromagnetic energy to one or more atoms of the plurality to induce the atoms to adopt one or more superposition states of a first atomic state and a second atomic state, one or more entanglement units to quantum mechanically entangle at least a subset of the one or more atoms in the one or more superposition states with at least another atom of the plurality, and one or more readout optical units to perform measurements of the superposition states to obtain the non-classical computation.

The present disclosure provides methods and systems for performing non-classical computations. The methods and systems generally use a plurality of spatially distinct optical trapping sites to trap a plurality of atoms, one or more electromagnetic delivery units to apply electromagnetic energy to one or more atoms of the plurality to induce the atoms to adopt one or more superposition states of a first atomic state and a second atomic state, one or more entanglement units to quantum mechanically entangle at least a subset of the one or more atoms in the one or more superposition states with at least another atom of the plurality, and one or more readout optical units to perform measurements of the superposition states to obtain the non-classical computation.

A beam delivery system is provided that includes a beam delivery photonic integrated circuit. The beam delivery photonic integrated circuit includes one or more optical inputs; a plurality of waveguide outputs; and a plurality of beam paths. Each beam path connects one of the plurality of waveguide outputs to at least one of the optical inputs. The plurality of waveguide outputs are configured to emit a plurality of parallel beams. The beam delivery photonic integrated circuit is on a chip. The beam delivery system further includes a telecentric optical relay assembly. The telecentric optical relay assembly is configured to receive the plurality of parallel beams provided by the waveguide outputs and focus each received beam on a corresponding one of a plurality of positions of an atomic object confinement apparatus in a telecentric manner.