A electronic method, includes receiving, by a graphene structure, a SPP mode of a particular frequency. The electronic method includes receiving, by the graphene structure, a driving microwave voltage. The electronic method includes generating, by the graphene structure, an entanglement between optical and voltage fields.

Systems and methods relate to arranging atoms into 1D and/or 2D arrays; exciting the atoms into Rydberg states and evolving the array of atoms, for example, using laser manipulation techniques and high-fidelity laser systems described herein; and observing the resulting final state. In addition, refinements can be made, such as providing high fidelity and coherent control of the assembled array of atoms. Exemplary problems can be solved using the systems and methods for arrangement and control of atoms.

The present invention provides an optical phase synchronization method characterized by involving applying a small phase modulation signal (dither signal) to local oscillator light, acquiring an error signal that is dependent on a phase shift, and controlling the phase shift. The present invention further provides an optical phase synchronization method characterized by involving inducing a specific phase pattern in dummy pulses in an optical resonator using injection light, applying phase modulation to the local oscillator light, and thereby acquiring a part of the measurement result of the dummy pulses as the error signal. The present invention is further characterized by arranging calculation pulses and phase synchronization dummy pulses in a distributed manner (for example, alternately) and increasing a pulse width using a narrow band electrical filter.

The present invention provides an optical phase synchronization method characterized by involving applying a small phase modulation signal (dither signal) to local oscillator light, acquiring an error signal that is dependent on a phase shift, and controlling the phase shift. The present invention further provides an optical phase synchronization method characterized by involving inducing a specific phase pattern in dummy pulses in an optical resonator using injection light, applying phase modulation to the local oscillator light, and thereby acquiring a part of the measurement result of the dummy pulses as the error signal. The present invention is further characterized by arranging calculation pulses and phase synchronization dummy pulses in a distributed manner (for example, alternately) and increasing a pulse width using a narrow band electrical filter.

An apparatus includes a plurality of interconnected reconfigurable beam splitters and a plurality of phase shifters collectively configured to define a network of optical devices. The network of optical devices is configured to perform a universal transformation on a plurality of input optical signals via a triangular architecture. The apparatus also includes a first delay line optically coupled to the network of optical devices and configured to send at least one output optical signal from a plurality of output optical signals of the network of optical devices to interact with at least one input optical signal in the plurality of input optical signals within the network of optical devices.

An apparatus includes a plurality of interconnected reconfigurable beam splitters and a plurality of phase shifters collectively configured to define a network of optical devices. The network of optical devices is configured to perform a universal transformation on a plurality of input optical signals via a triangular architecture. The apparatus also includes a first delay line optically coupled to the network of optical devices and configured to send at least one output optical signal from a plurality of output optical signals of the network of optical devices to interact with at least one input optical signal in the plurality of input optical signals within the network of optical devices.

The method object of the invention enables the scalable configuration and performance optimisation to be carried out for programmable optical circuits based on meshed structures, in such a way that they can perform optical/quantum signal processing functions. The object of the invention can be applied in circuits with arbitrary degrees of complexity implemented by means of programming a waveguide mesh. The method object of the invention enables not only the analysis and evaluation of performance to be carried out, but also the subsequent programming and optimisation of programmable optical devices.

Systems and methods relate to arranging atoms into 1D and/or 2D arrays; exciting the atoms into Rydberg states and evolving the array of atoms, for example, using laser manipulation techniques and high-fidelity laser systems described herein; and observing the resulting final state. In addition, refinements can be made, such as providing high fidelity and coherent control of the assembled array of atoms. Exemplary problems can be solved using the systems and methods for arrangement and control of atoms.

According to one embodiment, an information processing device includes a qubit pair structure body including a plurality of qubit pairs. The qubit pairs are arranged in m rows and n columns. The qubit pairs include first, and second qubit pairs, and first to sixth adjacent qubit pairs. The qubit pair structure body includes first to eighth spin chains. The first and fifth spin chains include a first eigenenergy, and not include the second, third, and fourth eigenenergies. The second and sixth spin chains include a second eigenenergy, and not include the first, third, and fourth eigenenergies. The third and seventh spin chains include a third eigenenergy, and not include the first, second, and fourth eigenenergies. The fourth spin chain and the eighth spin chain include a fourth eigenenergy, not include the first, second, and third eigenenergies. The first to fourth eigenenergies are different from each other.

According to one embodiment, an information processing device includes a qubit pair structure body including a plurality of qubit pairs. The qubit pairs are arranged in m rows and n columns. The qubit pairs include first, and second qubit pairs, and first to sixth adjacent qubit pairs. The qubit pair structure body includes first to eighth spin chains. The first and fifth spin chains include a first eigenenergy, and not include the second, third, and fourth eigenenergies. The second and sixth spin chains include a second eigenenergy, and not include the first, third, and fourth eigenenergies. The third and seventh spin chains include a third eigenenergy, and not include the first, second, and fourth eigenenergies. The fourth spin chain and the eighth spin chain include a fourth eigenenergy, not include the first, second, and third eigenenergies. The first to fourth eigenenergies are different from each other.