Optimal Dynamical Decoherence Control of a Qubit
Goren Gordon, Gershon Kurizki, Daniel A. Lidar
TL;DR
This paper develops a theoretical framework for optimally controlling qubit decoherence through modulation, using a non-Markovian Euler-Lagrange approach to minimize dephasing based on the spectral properties.
Contribution
It introduces a novel non-Markovian variational method for dynamical control of qubit decoherence, optimizing the modulation field for any given dephasing spectrum.
Findings
Provides a general theory for decoherence control in qubits.
Derives a non-Markovian Euler-Lagrange equation for optimal modulation.
Applicable to a wide range of dephasing spectra.
Abstract
A theory of dynamical control by modulation for optimal decoherence reduction is developed. It is based on the non-Markovian Euler-Lagrange equation for the energy-constrained field that minimizes the average dephasing rate of a qubit for any given dephasing spectrum.
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