Topologically-protected Traveling-Wave Amplifier

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This invention describes a traveling-wave amplifier that employs advanced topological physics to ensure signal amplification along a specific path or edge of a two-dimensional array of resonators. The design uses a synthetic gauge field and parametric driving to robustly amplify signals traveling in one direction, while suppressing unwanted noise or signals traveling in the opposite direction. This results in highly reliable, unidirectional amplification of microwave or optical signals.

Use CasesContent extracted from patent full text and abstract with AI.

• Amplification of weak signals in quantum computing circuits to enhance readout fidelity.
• Deployment in radio-frequency (RF) and microwave measurement instruments for precise signal detection.
• Improvement of optical communications infrastructure through low-noise signal amplification.
• Use in sensitive scientific instrumentation, such as particle detectors or interferometers, requiring high directional amplification.
• Integration into electronic or optical sensors for noise-robust signal processing.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides robust, unidirectional signal amplification, minimizing feedback and interference.
• Reduces noise and signal degradation, leading to higher fidelity measurements.
• Enhances stability and reliability through topological protection, which makes amplification less sensitive to defects or disorder in the physical system.
• Improves performance in quantum and classical communication and computing systems by reducing unwanted signal paths.
• Enables more precise and sensitive measurement applications with advanced noise suppression.

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Patent Abstract

A topologically-protected traveling-wave amplifier includes resonators arranged in a two-dimensional array defining a periphery including a first edge. An output line is coupled to an output resonator disposed along the first edge spaced from an input resonator coupled to an output line. A synthetic gauge field generator associated with the resonators provides a topologically-protected edge state corresponding to propagation along the periphery in a propagation direction from the input resonator along the first edge to the output resonator. A parametric driving element creates pairs of photons in the edge state and amplifies a signal propagating along the first edge in the propagation direction. A signal incident from the input line propagates in the propagation direction along the first edge while being amplified and is detected at the output line as an amplified signal. A signal incident from the output line is attenuated before emerging at the input resonator.