Characterizing noisy one-qubits gates

September 20, 2023
3:00pm to 4:00pm

Grey Room 3

Specialist level
Jose Manuel Sanchez Velazquez

Grey Room 3


We develop an analytical description for the average dynamics of a noisy one-qubit gate. In particular we will describe a laser with phase noise or equivalently the effect of having an unshielded two-level system with fluctuating magnetic fields. We use this analytical approach to give better input in minimization schemes for quantum process tomography in the presence of additional projection noise. Also we use this approximation to predict the gate infidelity of real lasers from its experimental PSD.