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Long-term drift of Si-MOS quantum dots with intentional donor implants



m rudolph, B Sarabi, Roy E. Murray, M Carroll, Neil M. Zimmerman


Charge noise can be detrimental to the operation of quantum dot (QD) based semiconductor qubits. We study the low-frequency charge noise by charge o set drift measurements for Si-MOS devices with intentionally implanted donors near the QDs. We show that the MOS system exhibits non-equilibrium drift characteristics that are not dependent on the properties of the donor implants. The equilibrium charge noise indicates a 1=f noise dependence, and a noise strength as low as 1 eV= p Hz, comparable to that reported in more model GaAs and Si/SiGe systems (which have also not been implanted). Implanted qubits, therefore, can be fabricated without detrimental e ects on long-term drift or 1=f noise.
Scientific Reports


silicon, charge offset drift


rudolph, M. , Sarabi, B. , Murray, R. , Carroll, M. and Zimmerman, N. (2019), Long-term drift of Si-MOS quantum dots with intentional donor implants, Scientific Reports, [online],, (Accessed May 27, 2024)


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Created May 20, 2019, Updated October 12, 2021