Qubit clock signal generation

Abstract

Example embodiments relate to generation of qubit clock signals. A superconductive phase detector may receive a reference frequency signal across a boundary of a cryogenic environment. A superconductive oscillator may be configured to generate a pulse clock signal based on an output of a low-pass filter electrically coupled to the output of the superconductive phase detector. A frequency divider may divide a frequency of the pulse clock signal to generate a feedback signal for the superconductive phase detector, which may generate its output based on a comparison of a phase of the reference frequency signal and a phase of the feedback signal. A pulse generator may generate a qubit drive pulse sequence based on the pulse clock signal. Apparatuses and methods are disclosed.