Researchers at the Niels Bohr Institute have made a breakthrough in quantum computing by developing a real-time method to track fluctuations in qubit behavior, achieving detection speeds up to 100 times faster than existing methods1. This innovative technique utilizes a field-programmable gate array (FPGA)-based controller in conjunction with adaptive Bayesian algorithms to monitor changes in a qubit's energy relaxation rate within milliseconds. The findings indicate that superconducting qubits can experience fluctuations at a much faster rate than previously thought, providing valuable insights for enhancing quantum processor calibration and reliability. By shedding light on the rapid fluctuations in qubit behavior, this discovery has significant implications for the development of more stable and efficient quantum computing systems. This matters to practitioners because it could lead to improved performance and reduced error rates in quantum computers, making them more viable for practical applications.