14 results about "Parametric oscillator" patented technology

An optical parametric oscillator and method for generating coherent signal light involve a resonant optical cavity for coherent signal light, and in the cavity a non-parametric gain element for amplifying the coherent signal light to only partially compensate for passive optical roundtrip losses, thereby obtaining lower effective roundtrip losses. A parametric gain element is arranged in the cavity, for converting coherent pump light into coherent signal light through an instantaneous nonlinear optical interaction. The parametric oscillator has means for adjusting an intracavity optical power of the coherent pump light above a threshold value, where the parametric gain is balancing the effective roundtrip losses, thus inducing sustained oscillations of the signal light in the optical cavity. The non-parametric gain element is configured to have a limited non-parametric gain over a gain bandwidth of the parametric gain element, which is less than the passive optical roundtrip losses in the gain bandwidth.

The inventors have developed techniques to facilitate the operation of a quantum oscillator with increased bit-flip lifetimes by inducing an energetic asymmetry between qubit states. The technology may be used for the storage of quantum information or for providing a system for quantum information processing with longer bit flip lifetimes. The technology includes a qubit along with corresponding drives for controlling the energetic barrier and energetic asymmetry between the energetic potentials for each qubit state.

An information processing device includes a quantum calculation circuit and a controller. The quantum calculation circuit includes a quantum bit element using a parametric oscillator having Kerr nonlinearity. The controller includes a memory storing instructions; and one or more processors configured to execute the instructions to: initialize a quantum state of the quantum bit element in such a way as to indicate any one of binary values of the quantum bit using a coherent drive signal; and then control the quantum calculation circuit in such a way as to increase detuning of the quantum bit element.

Provided herein are Ising tags for multidimensional threshold sensing including at least three parametric oscillators (POs), each coupled to and power-combined with at least one other of the at least three POs, each of the at least three POs configured to passively activate, responsive to a pump signal exceeding a threshold power, wherein an output signal of the PO can be switched between in-phase and out-of-phase, sensor elements each for sensing one of a plurality of PoIs, each coupling two of the POs and configured to set the threshold power of the coupled POs to be exceeded by the pump signal upon violation of a corresponding parameter of interest threshold, wherein a multidimensional sensing threshold is defined as a locus of all combinations of values of the parameters of interest for which the output signals of the POs constructively interfere to increase an output power of the combined output signal.

The inventors have developed techniques to facilitate the operation of a quantum oscillator with increased bit-flip lifetimes by inducing an energetic asymmetry between qubit states. The technology may be used for the storage of quantum information or for providing a system for quantum information processing with longer bit flip lifetimes. The technology includes a qubit along with corresponding drives for controlling the energetic barrier and energetic asymmetry between the energetic potentials for each qubit state.

To provide a circuit device capable of controlling an oscillating state of an oscillator while reducing the number of output channels of a phase lock signal.SOLUTION: A circuit device comprises: multiple parametric oscillators; a magnetic field generation part provided for each parametric oscillator; a coupler provided for each parametric oscillator; a signal output part for outputting a phase lock signal incident to the parametric oscillator via the coupler and outputting a pump signal incident to the magnetic field generation part; and a control part for controlling the signal output part. The parametric oscillator comprises a variable element. The magnetic field generation part applies the magnetic field to the variable element. The signal output part comprises output channels of the phase lock signal fewer than the number of the parametric oscillators. The control part controls a phase difference between the phase lock signal and the pump signal.SELECTED DRAWING: Figure 5

The application discloses a kind of based on four-wave mixing effect's ultrafast laser output's fiber parametric oscillator, belong to laser technology and laser control field.It includes: pump source, wavelength division multiplexer, gain optical fiber, optical isolator, photonic crystal fiber, reflective wavelength division multiplexer, optical path delay line, 1×2 optical fiber coupler, data collector, optical fiber coupling photoelectric detector.The application utilizes passive optical fiber, gain optical fiber, photonic crystal fiber and optical fiber device not only realizes the full fiber of laser, but also improves the environmental stability of laser.Through reflective wavelength division multiplexer, 900nm signal light is filtered out and returned to ring cavity parametric oscillation, and through optical path delay line, the overlapping part of signal light and pump light is adjusted, finally through 1×2 optical fiber coupler, stable 900nm tunable ultrafast laser output is realized.

To provide a processing device capable of achieving multiplexing of reading when oscillation frequencies of a plurality of Josephson parametric oscillators are the same.SOLUTION: And an identification processing unit configured to identify states of quantum bits of the plurality of Josephson parametric oscillators based on a comparison result of a real part and an imaginary part between a Fourier transform value of the signal output by the plurality of Josephson parametric oscillators and a calculated value obtained from a parameter of a pump signal input to the plurality of Josephson parametric oscillators.SELECTED DRAWING: Figure 7

A control device sets the value of a pump constant, which is a constant related to the initial value of a pump intensity of a quantum annealing device using Kerr nonlinear parametric oscillators, to a value determined based on the maximum number of interacting Kerr nonlinear parametric oscillators, an interaction intensity constant, which is a constant indicating the strength of the interaction of the Kerr nonlinear parametric oscillators, and a Kerr coefficient, which is a constant indicating the Kerr nonlinearity, or to a greater value; and controls the quantum annealing device based on the setting to cause quantum annealing to be performed.

To obtain a solution even when three or more Kerr nonlinear parametric oscillators are interacting with each other in quantum annealing using Kerr nonlinear parametric oscillators.SOLUTION: A control device is equipped with setting means for setting the value of a pump constant, which is a constant related to the initial value of pump strength of a quantum annealing device using a Kerr nonlinear parametric oscillator, to a value determined on the basis of the maximum number of interacting Kerr nonlinear parametric oscillators, an interaction strength constant, which is a constant indicating the strength of interaction between the Kerr nonlinear parametric oscillators, and a Kerr coefficient, which is a constant representing Kerr nonlinearity, or a value greater than the above value, and execution control means for controlling the quantum annealing device on the basis of the setting by the setting means to perform quantum annealing.SELECTED DRAWING: Figure 4

The invention relates to an optical device (1) comprising: - a multi-mode optical parametric oscillator (2) having a main optical resonator cavity (3) made of nonlinear resonator medium (4), wherein the main optical resonator cavity (3) is configured to receive a continuous-wave laser light (5) being optically coupled therewith, - an optical feedback loop (6) connected to the output of the optical parametric oscillator 2, wherein the optical feedback loop (6) comprises a band-pass filter (7) arranged to select a frequency mode of the parametric oscillator generating a microcomb, wherein the optical feedback loop (6) is configured to re-inject a selected comb line (8) into the main optical resonator cavity (3), thereby reducing the linewidth of the reinjected comb line (8). The invention further relates to a method for producing laser light with a narrow linewidth.

When performing a solution search using a k-parametric oscillator, if candidate solutions have been obtained, these obtained candidate solutions should be incorporated into the solution search. [Solution] The information processing device comprises a quantum computing circuit and a control means, the quantum computing circuit comprises a qubit element using a parametric oscillator having Kerr nonlinearity, and the control means initializes the quantum state of the qubit element to show one of the two values ​​of the qubit using a coherent drive signal, and then controls the quantum computing circuit to increase the detuning of the qubit element.

An optical computing device and an optical signal processing method are disclosed. The optical computing device includes a parametric oscillator array, an interaction computing matrix connected to the parametric oscillator array, a first feedback module connected to both ends of the parametric oscillator array, and a second feedback module connected between the parametric oscillator array and the interaction computing array. The parametric oscillator array is configured to receive a first group of signals and generate a first group of optical signals comprising a plurality of first optical signals based on the received first group of signals; the interaction computing array is configured to receive the first group of optical signals and perform matrix operations on the first group of optical signals according to a preset matrix to obtain a second group of optical signals comprising a plurality of second optical signals; the first feedback module is configured to receive the first group of optical signals and transmit the first group of optical signals to the parametric oscillator array; and the second feedback module is configured to receive the second group of optical signals and transmit the second group of optical signals to the parametric oscillator array.

An optical computing device includes a parametric oscillator array, an interaction computing matrix, a first feedback system coupled to two ends of the parametric oscillator array, and a second feedback system coupled to the parametric oscillator array and the interaction computing array. The parametric oscillator array is configured to receive a first group of signals, and generate a first group of optical signals including a plurality of first optical signals. The interaction computing array is configured to receive the first group of optical signals, and perform matrix operation on the first group of optical signals. The first feedback system is configured to receive the first group of optical signals, and transmit the first group of optical signals to the parametric oscillator array. The second feedback system is configured to receive the second group of optical signals, and transmit the second group of optical signals to the parametric oscillator array.