Abstract: A photonic circuit with at least one nonlinear amplitude thresholder for correcting errors produced by linear photonic logic. One or more photonic input gates of the photonic circuit receive one or more input signals and generate one or more photonic signals based on the one or more photonic input signals. A first set of one or more photonic gates of the photonic circuit generates one or more intermediate photonic signals based on the one or more photonic signals. The at least one nonlinear amplitude thresholder generates at least one photonic thresholding signal based on the one or more intermediate photonic signals, the at least one nonlinear amplitude thresholder operating in a first operating regime, second operating regime, and/or third operating regime. A second set of one or more photonic gates of the photonic circuit generates one or more photonic output signals based on the at least one photonic thresholding signal.

Abstract: Embodiments of the present disclosure are directed to an efficient design of a photonic circuit by an emulator circuit that optimizes coefficients of an S-matrix representation model of the photonic circuit. The emulator circuit comprises a first optimizer circuit, a comparator circuit, and a second optimizer circuit. The first optimizer circuit determines target coefficients of a target S-matrix representation model of the photonic circuit, based on photonic input signals and target photonic output signals of the target S-matrix representation model. The comparator circuit compares the target coefficients with device coefficients of an S-matrix representation model of the photonic circuit. The second optimizer circuit iteratively updates the device coefficients based on the comparison to determine final device coefficients. The photonic circuit is defined in accordance with the determined final device coefficients.

Abstract: Embodiments are directed to designing area and power-efficient photonic super-gates. A first modeling circuit of an emulator circuit generates a physical model for a photonic circuit having a plurality of cascaded photonic gates, based on a set of photonic input signals and a set of one or more photonic output signals that are defined in accordance with a truth table of the photonic circuit. Based on the physical model, a first optimizer circuit of the emulator circuit estimates initial parameters of a target model for the photonic circuit. A second modeling circuit of the emulator circuit generates, based on the initial parameters, a set of parameters of the target model. A second optimizer circuit of the emulator circuit executes a design algorithm on the set of parameters of the target model to instantiate a photonic super-gate that emulates operations of the photonic circuit.

Abstract: Described are various embodiments of space-compressing methods, materials, devices, and systems, and imaging or optical devices and systems using same. In one embodiment, an optical system comprises an optical convergence element having a defined optical path convergence distance and disposed so to produce converging optical rays along an optical convergence path to converge at said distance; an optical space-compression medium disposed along the optical convergence path to intersect the converging optical rays to compress a resulting optical convergence distance by imparting an inward transverse translation of the converging optical rays while substantially maintaining respective incident convergence angles upon output.

Abstract: Described are various embodiments of space-compressing methods, materials, devices, and systems, and imaging or optical devices and systems using same. In one embodiment, an optical system comprises an optical convergence element having a defined optical path convergence distance and disposed so to produce converging optical rays along an optical convergence path to converge at said distance; an optical space-compression medium disposed along the optical convergence path to intersect the converging optical rays to compress a resulting optical convergence distance by imparting an inward transverse translation of the converging optical rays while substantially maintaining respective incident convergence angles upon output.

Abstract: In one aspect, a composition of matter is disclosed, which comprises a photonic crystal comprising a plurality of 2D or 3D periodically repeating structures, where the structures are configured and arranged relative to one another such that the photonic crystal exhibits a Dirac cone at the center of the Brillouin zone of its reciprocal lattice, e.g., at one frequency in the optical regime. In some embodiments, the structures are formed of a dielectric material.

Abstract: In one aspect, a device for generating triplet photons is disclosed, which includes a waveguide extending from a proximal end for receiving pump radiation to a distal end through which triplet photons generated via nonlinear interaction of the pump radiation with the waveguide exit the waveguide, where the waveguide is configured such that the triplet photons generated within the waveguide reach its distal end at a rate in a range of about 0.05 triplet photons/second/mW and 0.3 triplet photons/second/mW, e.g., in a range of about 0.1 triplet photons/second/mW to about 0.2 triplet photons/second/mW.

Abstract: In one aspect, a composition of matter is disclosed, which comprises a photonic crystal comprising a plurality of 2D or 3D periodically repeating structures, where the structures are configured and arranged relative to one another such that the photonic crystal exhibits a Dirac cone at the center of the Brillouin zone of its reciprocal lattice, e.g., at one frequency in the optical regime. In some embodiments, the structures are formed of a dielectric material.

Abstract: In one aspect, a device for generating triplet photons is disclosed, which includes a waveguide extending from a proximal end for receiving pump radiation to a distal end through which triplet photons generated via nonlinear interaction of the pump radiation with the waveguide exit the waveguide, where the waveguide is configured such that the triplet photons generated within the waveguide reach its distal end at a rate in a range of about 0.05 triplet photons/second/mW and 0.3 triplet photons/second/mW, e.g., in a range of about 0.1 triplet photons/second/mW to about 0.2 triplet photons/second/mW.

Abstract: The present teachings are generally directed to devices and methods for triplet photons generations, and in particular to on-chip integrated sources for generating direct triplet entangled photons.

Abstract: The present teachings are generally directed to devices and methods for triplet photons generations, and in particular to on-chip integrated sources for generating direct triplet entangled photons.