期刊
QUANTUM SCIENCE AND TECHNOLOGY
卷 4, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/2058-9565/aadc6c
关键词
nanomechanics; parametric gates; superconducting qubits; resonators and cavities; phononic crystals; quantum acoustics
资金
- US government through the Office of Naval Research under MURI [N00014-151-2761]
- National Science Foundation [ECCS-1708734]
- David and Lucille Packard Fellowship
- Swiss National Science Foundation
- Stanford Graduate Fellowship
We analyze the quantum information processing capability of a superconducting transmon circuit used to mediate interactions between quantum information stored in a collection of phononic crystal cavity resonators. Having only a single processing element to be controlled externally makes this approach significantly less hardware-intensive than traditional architectures with individual control of each qubit. Moreover, when compared with the commonly considered alternative approach using coplanar waveguide or 3d cavity microwave resonators for storage, the nanomechanical resonators offer both very long lifetime and small size-two conflicting requirements for microwave resonators. A detailed gate error analysis leads to an optimal value for the qubit-resonator coupling rate as a function of the number of mechanical resonators in the system. For a given set of system parameters, a specific amount of coupling and number of resonators is found to optimize the quantum volume, an approximate measure for the computational capacity of a system. We see this volume is higher in the proposed hybrid nanomechanical architecture than in the competing on-chip electromagnetic approach.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据