AI 中文总结
本研究提出利用应变敏感固态自旋作为非线性元件的玻色型量子信息处理架构，可实现高空间密度逻辑量子比特，为可扩展量子计算提供路径。
AI 中文摘要
纳米机械结构已被研究作为实现射频下长寿命量子激发的方法，其高品质因子尤其引人关注，可作为玻色型量子信息编码的介质。然而，在主导阶下，机械模式通常缺乏玻色通道间相互作用所需的非线性，因此难以扩展到实用量子计算所需的多量子比特 regime。本研究提出并描述一种玻色型量子信息处理方法，利用应变敏感的固态自旋作为非线性元件，产生所需的非经典机械态。我们概述了片上机械猫态量子比特间实现近邻连接的架构，以及通用量子计算所需的控制与读出架构。此外，该架构可通过利用玻色纠错方案的效率，以及组成纳米机械谐振器和自旋量子比特的小尺寸，实现逻辑量子比特的高空间密度。最后，我们确定了使高量子比特密度下达到纠错阈值所需的必要性能指标，为可扩展量子信息处理指明了一条路径。
英文摘要
Nanomechanical structures have been investigated as a method of achieving long-lived quantum excitations at radio frequencies. Their high quality factors are especially intriguing as a medium for bosonic encoding of quantum information. However, to leading order, mechanical modes typically lack the nonlinearities necessary to achieve interaction between bosonic channels and thus are limited in their ability to scale to the many-qubit regime necessary for practical quantum computing. In this work, we propose and describe an approach for bosonic quantum information processing that uses strain-sensitive solid-state spins as nonlinear elements to produce the relevant nonclassical mechanical states. We outline the architecture required to achieve nearest-neighbor connectivity between mechanical cat-state qubits on-chip, as well as the control and readout architecture required for universal quantum computation. In addition, we show that this architecture can allow for a high spatial density of logical qubits by leveraging both the efficiency of bosonic error correction schemes and the small sizes of the constituent nanomechanical resonators and spin qubits. Finally, we identify the necessary performance metrics that will enable error-correction thresholds at high qubit densities, illuminating a path towards scalable quantum information processing.
