System and method for flux biasing for superconducting quantum circuits

Quantum computing systems require methods for controlling the energy of qubits and couplers for quantum operations. The invention provides quantum bits and flux bias of quantum couplers for superconducting quantum computers using single flux quantum (SFQ) technology. The method is suitable for various superconducting quantum bit structures and couplers, including superconducting transmitters, fluxes, flux quantum bits, phase quantum bits and other superconducting quantum bits. The method enables arbitrary amplitude time varying flux biasing of qubits and couplers due to the sequence of high speed SFQ pulses. Several preferred embodiments are disclosed that provide high fidelity control of fast single qubit and multiple qubit operations. 量子计算系统需要用于控制量子比特和耦合器的能量以进行量子操作的方法。本发明使用单通量量子(SFQ)技术为超导量子计算机提供了量子比特和量子耦合器的通量偏置。该方法适用于各种超导量子比特结构和耦合器，包括超导传输子、fluxonium、通量量子比特、相位量子比特和其他超导量子比特。由于高速SFQ脉冲的序列，该方法使得能够进行量子比特和耦合器的任意振幅时间变化通量偏置。公开了提供快速单量子比特和多量子比特操作的高保真度控制的若干个优选的实施方案。