Magnetic noise from metal objects near qubit arrays

• Main Authors: Kenny, Jonathan, Mallubhotla, Hruday, Joynt, Robert
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2022
• Subjects: Science::Physics; Noise Correlation Function; Qubits
• Online Access: https://hdl.handle.net/10356/154968
• Institution: Nanyang Technological University

All metal objects support fluctuating currents that are responsible for evanescent-wave Johnson noise in their vicinity due both to thermal and quantum effects. The noise fields can decohere qubits in their neighborhood. It is quantified by the average value of $B(x,t)B(x',t')$ and its...