Hybrid Quantum Surface Acoustic Wave with Skyrmion Qubit for Quantum Information Processing

Area of Science:

• Quantum physics
• Condensed matter physics
• Nanotechnology

Background:

• Surface acoustic wave (SAW) devices are crucial for classical communications and emerging quantum technologies.
• Skyrmion qubits offer controllable quantum states at the nanoscale.

Purpose of the Study:

• To propose and investigate a novel hybrid quantum system combining skyrmion qubits with SAW cavities.
• To explore strong coupling interactions between skyrmion qubits and phononic modes within the SAW cavity.

Main Methods:

• Utilizing a hybrid system of skyrmion qubits and a multi-mode SAW cavity.
• Employing static and time-dependent magnetic fields to manipulate the skyrmion qubit.
• Investigating qubit-phonon, phonon-phonon, and qubit-qubit interactions in the strong-coupling regime.

Main Results:

• Demonstrated strong coupling between single skyrmion qubits and individual phononic modes.
• Enabled manipulation of skyrmion qubit interactions with different phononic modes.
• Facilitated the study of phonon-phonon and qubit-qubit interactions via the SAW cavity.

Conclusions:

• The proposed hybrid system exhibits strong coupling, essential for quantum information processing.
• Controllable skyrmion qubits and dense phononic modes in SAW cavities pave the way for scalable quantum chips.
• Promising applications in large-scale quantum communication and computing are anticipated.