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

Area of Science:

• Quantum Information Science
• Quantum Computing
• Solid-State Physics

Background:

• Maintaining quantum coherence is critical for quantum computation fidelity.
• Dynamical decoupling using strong pulses is a known technique to extend qubit operation times.
• Qubits are susceptible to environmental noise, leading to decoherence.

Purpose of the Study:

• To propose and demonstrate a novel, efficient method for protecting quantum coherence.
• To enhance the operational lifespan of qubits for quantum information processing.
• To investigate the use of Floquet modes as a route to improved qubit performance.

Main Methods:

• Utilizing Floquet modes to engineer qubit-environment interactions.
• Experimental demonstration across various materials with different spin Hamiltonians and environments.
• Characterization of the Rabi decay time and its enhancement.

Main Results:

• A significant increase in the Rabi decay time ([Formula: see text]) was achieved using the proposed Floquet mode technique.
• Demonstrated the regime [Formula: see text] where the enhanced decay time exceeds the relaxation time.
• The method proved effective in diverse material systems and environments.

Conclusions:

• Floquet modes offer a simple and highly efficient alternative for protecting quantum coherence.
• This approach provides a viable pathway for advancing spin qubits and ensembles in quantum information applications.
• The demonstrated enhancement of qubit operation time is crucial for practical quantum computing and storage.