Experimental protection of quantum coherence by using a phase-tunable image drive

Sylvain Bertaina (1) , Hervé Vezin (2) , Hans de Raedt , Irinel Chiorescu (3)

1 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
2 LASIRE - Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516
3 FSU - Florida State University [Tallahassee]

The protection of quantum coherence is essential for building a practical quantum computer able to manipulate, store and read quantum information with a high degree of fidelity. Recently, it has been proposed to increase the operation time of a qubit by means of strong pulses to achieve a dynamical decoupling of the qubit from its environment. We propose and demonstrate a simple and highly efficient alternative route based on Floquet modes, which increases the Rabi decay time (TR) in a number of materials with different spin Hamiltonians and environments. We demonstrate the regime TR ≈ T1, thus providing a route for spin qubits and spin ensembles to be used in quantum information processing and storage.

Domaines: Electrons fortement corrélés [cond-mat.str-el]; Physique Quantique [quant-ph]

Sylvain Bertaina, Hervé Vezin, Hans de Raedt, Irinel Chiorescu. Experimental protection of quantum coherence by using a phase-tunable image drive. Scientific Reports, 2020, 10, ⟨10.1038/s41598-020-77047-5⟩. ⟨hal-02999973v2⟩