Electro-Optical Transducer for Quantum Information Transfer
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Solution Overview
Problem
Current methods for quantum information transfer between optical and superconducting qubits face limitations in coherence time and scalability, leading to challenges in high-fidelity quantum operations and long-distance quantum communication.
Innovation Solution
An electro-optical system utilizing high-Q superconducting qubits coupled with nonlinear electro-optic materials to form a whispering gallery optical cavity, enabling direct and efficient conversion of quantum information between optical and microwave frequencies, thereby enhancing coherent coupling rates and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional quantum information transfer methods are used between optical and superconducting qubits, then system compatibility is achieved, but coherent coupling rates are insufficient and information transfer speed is limited
Solution Approach 1:
The patent introduces an electro-optical transducer as an intermediary device that converts microwave photons to optical photons, enabling efficient quantum information transfer between superconducting qubits and optical channels while maintaining coherence through quantum-limited amplification
Solution Approach 2:
The patent transforms the frequency parameter of quantum states from microwave regime to optical regime through the electro-optical transducer, enabling compatibility between superconducting quantum systems and optical communication infrastructure
2Adaptability or versatility
If quantum information is stored in quantum memory for further processing, then processing flexibility is improved, but coherence time limitations reduce the available processing window
Solution Approach 1:
The electro-optical transducer acts as a mediator that enables rapid transfer of quantum information from short-coherence superconducting qubits to long-coherence optical qubits or quantum memory, effectively extending the processing window by transferring information to a medium with longer coherence properties
Solution Approach 2:
The patent divides the quantum computing system into distinct functional modules: superconducting qubit processors for fast operations, electro-optical transducers for interface conversion, and optical quantum memory for long-term storage, allowing each component to operate in its optimal regime
3Productivity
If more qubits are added to increase computational power, then processing capability is improved, but system complexity and difficulty of maintaining coherence increase
Solution Approach 1:
The patent implements a modular quantum computing architecture where multiple superconducting qubit modules can be independently constructed and scaled, with electro-optical transducers providing standardized interfaces that reduce the complexity of inter-module connections and coherence management
Solution Approach 2:
The electro-optical transducer serves as a standardized intermediary interface that simplifies the coupling between multiple qubit modules and optical channels, reducing the complexity of managing coherent interactions in large-scale systems by providing a universal conversion mechanism
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 achieves an order of magnitude improvement in coherent coupling rates, facilitating fast and high-fidelity quantum information exchange, enabling applications such as distributed quantum computing, quantum repeaters, and secure long-distance quantum key distribution.
Implementation Method 1
an electro-optic material that forms an optical cavity and stores optical photons, wherein the frequency of the optical photons is directly coupled to the voltage at the capacitor of the superconducting qubit generated from the storing of the microwave photon from the superconducting qubit
Data Source
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AI summary
An electro-optical system for exchanging quantum information between optical qubits and including a superconductive microwave cavity; an electro-optical material; a superconductive qubit circuit formed on the electro-optical material including a superconductive qubit; a dipole antenna, formed on the electro-optical material for directly coupling the superconductive qubit to the superconductive microwave cavity; an optical input for receiving input optical photons; a microwave input for receiving input microwave photons; and an optical output for outputting modulated optical photons, wherein a frequency and a phase of the optical photon is modulated with a state of the superconducting qubit by the dipole antenna.