Related Experiment Video
Updated: Oct 11, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Mechanisms of decoherence in weakly anisotropic molecular magnets
Dobrovitski1, Katsnelson, Harmon
1Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA.
Abstract:
Decoherence mechanisms in crystals of weakly anisotropic magnetic molecules, such as V15, are studied. We show that an important decohering factor is the rapid thermal fluctuation of dipolar interactions between magnetic molecules. A model is proposed to describe the influence of this source of decoherence. Based on the exact solution of this model, we show that at relatively high temperatures, about 0.5 K, the quantum coherence in a V15 molecule is not suppressed and, in principle, can be detected experimentally. Therefore, these molecules may be suitable prototype systems for study of physical processes taking place in quantum computers.
Related Concept Videos
Atomic Nuclei: Nuclear Relaxation Processes
π Electron Effects on Chemical Shift: Overview
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Atomic Nuclei: Magnetic Resonance
Paramagnetism
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current
