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超导电路新设计有望提升量子处理器速度
Ke Ji Ri Bao· 2025-05-05 23:18
Core Insights - A new superconducting circuit design by a team from MIT is expected to increase the speed of quantum processors by 10 times, marking the strongest nonlinear light-matter coupling achieved in quantum systems to date [1] - The efficiency of quantum computing relies on the speed of complex calculations and the rapid reading of results, which is determined by the coupling strength between photons and artificial atoms [1] - The newly developed "four-component coupler" enhances the interaction between qubits and light signals, facilitating efficient information exchange [1][2] Group 1 - The superconducting circuit design demonstrates a coupling strength that is an order of magnitude higher than previously achieved, enabling quantum operations and readings to be completed in a few nanoseconds [1][2] - The research team began developing a specialized photon detector in 2019 to enhance quantum information processing capabilities [1] - The four-component coupler acts as a "translator" that improves the dialogue between light and matter, making it more efficient and precise [1] Group 2 - In experiments, the coupler was connected to two superconducting qubits, with one functioning as a resonator to detect the state of the qubit and the other as an artificial atom to store quantum information [2] - The nonlinear light-matter coupling strength produced by the four-component coupler is significantly higher than previous implementations, leading to faster reading speeds and reduced errors [2] - This research contributes to the long-term goal of building fault-tolerant quantum computers, which is crucial for practical, large-scale quantum computing [2]