Evanescent-wave Johnson noise in small devices

• Published in: Quantum science and technology Vol. 3; no. 1; pp. 15001 - 15029
• Main Authors: Premakumar, Vickram N, Vavilov, Maxim G, Joynt, Robert
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.01.2018
• Subjects: decoherence; Johnson noise; noise; quantum computing; quantum information

In many quantum computer architectures, the qubits are in close proximity to metallic device elements. The fluctuating currents in the metal give rise to noisy electromagnetic fields that leak out into the surrounding region. These fields are known as evanescent-wave Johnson noise. The noise can dec...