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arXiv · 1911.12642

Spin-phonon interfaces in coupled nanomechanical cantilevers

Thomas Oeckinghaus·S. Ali Momenzadeh·Philipp Scheiger·Tetyana Shalomayeva·Amit Finkler·Durga Dasari·Rainer Stöhr·Jörg Wrachtrup
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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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Thomas Oeckinghaus, S. Ali Momenzadeh, Philipp Scheiger, Tetyana Shalomayeva, Amit Finkler, Durga Dasari, Rainer Stöhr, Jörg Wrachtrup. 2019-11-28. Spin-phonon interfaces in coupled nanomechanical cantilevers. https://doi.org/10.1021/acs.nanolett.9b04198

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