Spin-phonon interfaces in coupled nanomechanical cantilevers

Abstract

Coupled micro- and nanomechanical oscillators are of fundamental and technical interest for emerging quantum technologies. Upon interfacing with long-lived solid-state spins, the coherent manipulation of the quantum hybrid system becomes possible even at ambient conditions. While, the ability of these systems to act as a quantum bus inducing long-range spin-spin interactions has been known, the possibility to coherently couple electron/nuclear spins to the common modes of multiple oscillators and map their mechanical motion to spin-polarization has not been experimentally demonstrated. We here report experiments on interfacing spins to the common modes of a coupled cantilever system, and show their correlation by translating ultra-low forces induced by radiation from one oscillator to a distant spin. Further, we analyze the coherent spin-spin coupling induced by the common modes and estimate the entanglement generation among distant spins.

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• Spin-Controlled Quantum Interference of Levitated Nanorotors
• Quantum sensing and control of spin state dynamics in the radical pair mechanism
• Programmable Quantum Processors based on Spin Qubits with Mechanically-Mediated Interactions and Transport
• Ancilla assisted Discrete Time Crystals in Non-interacting Spin Systems
• Measuring high field gradients of cobalt nanomagnets in a spin-mechanical setup
• Superconducting Nanoelectromechanical Transducer Resilient to Magnetic Fields