Bosonic Computing with Integrated Nanomechanical Resonators and Solid-State Spins

Abstract

Nanomechanical structures have been heavily investigated in the last decade as a method of achieving long-lived quantum excitations at radiofrequencies. This makes mechanical modes especially intriguing as a medium for bosonic encoding of quantum information. However, up to second order, mechanical modes typically lack nonlinearities used to achieve communication between bosonic channels and thus are limited in their ability to scale to the many-qubit regime necessary for practical quantum computing. Here, we disclose an approach for bosonic computing with mechanical modes weakly coupled through solid state spin nonlinearities. We outline an architecture for achieving nearest-neighbor connectivity between mechanical cat state qubits on-chip, as well as an accompanying control and readout architecture.

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