An optical computing device includes: an optical modulation element including cells with independently configurable amounts of modulation; and a reflector. The optical modulation element is configured with N (N is a natural number not less than 2)-computing regions A1, A2, . . . , AN. The computing region A1 performs optical computing by modulating and reflecting incident light. Each computing region Ai (i is a corresponding natural number not less than 2 and not more than N) other than the computing region A1 performs the optical computing by modulating and reflecting signal light that has been modulated and reflected by a computing region Ai−1 and then reflected by the reflector.

The present technology relates to an optical logic circuit device. The optical logic circuit device includes a first input port and a second input port. A symmetric arrangement of waveguides is coupled to the first input port and the second input port. The symmetric arrangement of waveguides having a pair of topologically protected edge states that provide propagation paths through the symmetric arrangement of waveguides. An output port is coupled to the symmetric arrangement of waveguides. Methods of fabricating and using the optical logic circuit device are also disclosed.

The present technology relates to an optical logic circuit device. The optical logic circuit device includes a first input port and a second input port. A symmetric arrangement of waveguides is coupled to the first input port and the second input port. The symmetric arrangement of waveguides having a pair of topologically protected edge states that provide propagation paths through the symmetric arrangement of waveguides. An output port is coupled to the symmetric arrangement of waveguides. Methods of fabricating and using the optical logic circuit device are also disclosed.

An apparatus (1) is proposed for providing coupling between at least a first input signal with a first signal frequency, and a second input signal with a second, different signal frequency. The apparatus comprises: a first input port (3); a second input port (5); a first output port (9); a second output port (11); a first waveguide (13); a second waveguide (15), the second waveguide (15) being made of or comprising non-linear material such that a first electromagnetic field generated by a first-waveguide signal in the first waveguide (13) and a second electromagnetic field generated by a second-waveguide signal in the second waveguide (15) are arranged to overlap in the non-linear material; a periodic structure (31, 33); and a phase-matching arrangement (37).

An apparatus (1) is proposed for providing coupling between at least a first input signal with a first signal frequency, and a second input signal with a second, different signal frequency. The apparatus comprises: a first input port (3); a second input port (5); a first output port (9); a second output port (11); a first waveguide (13); a second waveguide (15), the second waveguide (15) being made of or comprising non-linear material such that a first electromagnetic field generated by a first-waveguide signal in the first waveguide (13) and a second electromagnetic field generated by a second-waveguide signal in the second waveguide (15) are arranged to overlap in the non-linear material; a periodic structure (31, 33); and a phase-matching arrangement (37).

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.

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.

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.

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.

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.