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

Abstract

The protection of qubit coherence is an essential task in order to build 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 pulse protocol based on Floquet modes, which increases the decoherence time in a number of materials with different spin Hamiltonians and environments. We demonstrate the regime $T_2\approx T_1$, thus providing a route for spin qubits and spin ensembles to be used in quantum information processing and storage.

Supplementary informations at the end of the file

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Cited by in corpus (8)

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• On-Chip Detection of Electronuclear Transitions in the ${}^{155,157}$Gd Multilevel Spin System
• Sustaining Rabi oscillations by using a phase-tunable image drive
• Quantum interference in asymmetric superconducting nanowire loops
• Dual on-chip SQUID measurement protocol for flux detection in large magnetic fields
• Observation of symmetry-protected selection rules in periodically driven quantum systems
• Robust gigahertz-range ac magnetometry with an ensemble of NV centers in diamond using concatenated continuous dynamical decoupling