Superconducting Parametric Amplifier With Integrated Impedance Matching
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Solution Overview
Problem
The existing superconducting impedance matched parametric amplifiers have low yield and high manufacturing costs due to complex structures and sensitivity to parameters, leading to insufficient performance and high power consumption, especially when operating at low temperatures for quantum computation.
Innovation Solution
A method and apparatus for determining a superconducting impedance matched parametric amplifier that calculates structural parameters based on center wavelength, gain, and bandwidth parameters, optimizing impedance values and capacitance to improve performance and reduce loss, integrating an impedance transformer and Josephson parametric amplifier on the same quantum chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the superconducting impedance matched parametric amplifier uses a complex structure to achieve impedance matching, then the performance is improved, but the manufacturing yield decreases and manufacturing cost increases
Solution Approach 1:
The patent combines the impedance matching function and amplification function into a single integrated device. The superconducting parametric amplifier is designed with built-in impedance matching capabilities through its resonant circuit configuration, eliminating the need for separate impedance matching components and reducing structural complexity while maintaining performance.
Solution Approach 2:
The amplifier device performs multiple functions simultaneously: it provides impedance matching, signal amplification, and noise filtering through its integrated resonant circuit design. The same structural elements that provide resonance for amplification also serve the impedance matching function, reducing the overall device complexity.
2Reliability
If the superconducting impedance matched parametric amplifier uses a complex structure with multiple parameters, then the impedance matching is improved, but the sensitivity to parameter variations increases leading to lower manufacturing yield
Solution Approach 1:
The patent employs superconducting materials that operate at low temperatures to fundamentally change the electrical parameters of the circuit. The superconducting state provides near-zero resistance, which stabilizes the impedance characteristics and reduces sensitivity to dimensional variations in the manufactured components, thereby improving manufacturing yield.
Solution Approach 2:
Instead of trying to achieve impedance matching through complex external matching networks that are highly sensitive to parameter variations, the patent inverts the approach by designing the amplifier's internal resonant circuit to inherently provide impedance matching. This reduces the number of external components and their associated parameter sensitivities.
3Object-generated harmful factors
If the amplifier operates at low temperatures for quantum computation, then the noise level is reduced, but the power consumption and cooling requirements increase
Solution Approach 1:
The patent utilizes the phase transition of materials into the superconducting state at low temperatures to achieve near-zero electrical resistance. This phase transition enables the amplifier to operate with minimal energy loss and reduced noise, as superconducting materials can carry current without dissipation, thereby reducing power consumption despite the cooling requirements.
Solution Approach 2:
The patent replaces conventional resistive amplification mechanisms with superconducting parametric amplification. The superconducting resonant circuit uses reactive energy storage in inductors and capacitors rather than resistive heating, fundamentally changing the energy consumption mechanism from thermal dissipation to reversible energy exchange, which reduces overall power consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the performance of superconducting impedance matched parametric amplifiers by reducing loss and increasing manufacturing yield, facilitating large-scale production and cost reduction while maintaining low noise levels.
Implementation Method 1
the Josephson parametric amplifier including: a stub, the stub having a length matching a capacitance value of the superconducting impedance matched parametric amplifier
Implementation Method 2
the coplanar waveguide having a length of one-half wavelength of a center frequency
Implementation Method 3
a stub dimension of the superconducting impedance matched parametric amplifier based on the impedance value of the impedance matching line and the capacitance value of the amplifier
Data Source
AI summary
In a method for determining a superconducting impedance matched parametric amplifier, a center wavelength parameter, a gain parameter, and a bandwidth parameter of the superconducting impedance matched parametric amplifier are determined. An impedance value of an impedance matching line of the superconducting impedance matched parametric amplifier and a capacitance value of the amplifier are determined based on the wavelength parameter, the gain parameter, and the bandwidth parameter. A line width dimension of a coplanar waveguide of the superconducting impedance matched parametric amplifier is calculated based on the impedance value of the impedance matching line. A stub dimension of the superconducting impedance matched parametric amplifier is calculated based on the impedance value of the impedance matching line and the capacitance value of the amplifier. Structural parameters of the superconducting impedance matched parametric amplifier are determined based on the line width dimension and the stub dimension.