Three-level spin system under decoherence-minimizing driving fields: Application to nitrogen-vacancy spin dynamics

Abstract

Within the framework of a general three-level problem, the dynamics of the nitrogen-vacancy (NV) spin is studied for the case of a special type of external driving consisting of a set of continuous fields with decreasing intensities. Such a set has been proposed for minimizing coherence losses. Each new driving field with smaller intensity is designed to protect against the fluctuations induced by the driving field at the preceding step with larger intensity. We show that indeed this particular type of external driving minimizes the loss of coherence, using purity and entropy as quantifiers for this purpose. As an illustration, we study the coherence loss of an NV spin due to a surrounding spin bath of ${}^{13}$C nuclei.

10 pages, 8 figures, to be published in Phys. Rev. A

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Cited by in corpus (10)

• Continuous dynamical decoupling of a single diamond nitrogen-vacancy center spin with a mechanical resonator
• Nonperturbative Leakage Elimination Operators and Control of a Three-Level System
• Generation of coherence in an exactly solvable nonlinear nanomechanical system
• Noisy Coherent Population Trapping: Applications to Noise Estimation and Qubit State Preparation
• High-fidelity two-qubit gates via dynamical decoupling of local 1/f noise at optimal point
• Entanglement dynamics of two nitrogen vacancy centers coupled by a nanomechanical resonator
• Functionalizing Fe adatoms on Cu(001) as a nanoelectromechanical system
• Exact magnetic field control of nitrogen-vacancy center spin for realizing fast quantum logic gates
• Optical nuclear electric resonance as single qubit gate for trapped neutral atoms
• Switching of the information backflow between a helical spin system and non-Markovian bath