Exceptional points and exponential sensitivity for periodically driven Lindblad equations
21 June 2023
Qubit decoherence is the loss of quantum information over time, caused by unwanted interactions with the environment
Two main types of decoherence are relaxation (energy loss) and dephasing (loss of phase information)
Lindblad equations describe qubit evolution including decoherence effects like relaxation and dephasing
Monitoring techniques like Bloch vector tracking and Floquet analysis reveal qubit relaxation patterns
Exceptional points in the system can lead to step-like qubit relaxation rather than smooth exponential decay
Demystifying quantum decoherence: A general audience guide to monitoring qubit relaxation
This paper provides a high-level overview of quantum decoherence in qubits, explaining key concepts like relaxation, dephasing, and Lindblad equations in clear terms for a general audience. It summarizes research on monitoring qubit relaxation using techniques like Bloch vector evolution and Floquet analysis, and highlights findings like the role of exceptional points in causing step-like qubit decay.
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