Dephasing of qubits by transverse low-frequency noise

2003/10/01 by Yu. Makhlin, Yuriy Makhlin, A. Shnirman +1 · 22 citations
Computer Science · Physics and Astronomy · #Condensed matter physics #Coupling (piping) #Dephasing #Dissipative system #Noise (video) #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Qubit #Transverse plane #cond-mat.mes-hall

paper · pdf · doi:10.1134/1.1637702

published in Journal of Experimental and Theoretical Physics Letters 78(8), 497-501 (Pleiades Publishing)

openalex publication_date 2003/10/01 · arxiv created 2003/12/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We analyze the dissipative dynamics of a two-level quantum system subject to low-frequency, e.g., 1/ f noise, motivated by recent experiments with superconducting quantum circuits. We show that the effect of transverse linear coupling of the system to low-frequency noise is equivalent to that of quadratic longitudinal coupling. We further find the decay law of quantum coherent oscillations under the influence of both low-and high-frequency fluctuations, in particular, for the case of comparable rates of relaxation and pure dephasing.

Cited by

• Superconducting Quantum Circuits, Qubits and Computing
• Dissipative dynamics of circuit-QED in the mesoscopic regime
• Phase coherent dynamics of a superconducting flux qubit with capacitive bias readout

Related

• Noise and Decoherence in Quantum Two-Level Systems
• Dephasing of solid-state qubits at optimal points
• Dephasing of a Qubit due to Quantum and Classical Noise
• Effect of 1/f noise on the dissipative dynamics of an LC-shunted qubit
• Low- and High-Frequency Noise from Coherent Two-Level Systems