用于微波的通量可调移相器。

Flux-tunable phase shifter for microwaves.

作者信息

Kokkoniemi Roope, Ollikainen Tuomas, Lake Russell E, Saarenpää Sakari, Tan Kuan Y, Kokkala Janne I, Dağ Ceren B, Govenius Joonas, Möttönen Mikko

机构信息

QCD Labs, COMP Centre of Excellence, Department of Applied Physics, Aalto University, FI-00076, Aalto, Finland.

National Institute of Standards and Technology, Boulder, Colorado, 80305, USA.

出版信息

Sci Rep. 2017 Nov 7;7(1):14713. doi: 10.1038/s41598-017-15190-2.

DOI:10.1038/s41598-017-15190-2

PMID:29116119

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5676951/

Abstract

We introduce a magnetic-flux-tunable phase shifter for propagating microwave photons, based on three equidistant superconducting quantum interference devices (SQUIDs) on a transmission line. We experimentally implement the phase shifter and demonstrate that it produces a broad range of phase shifts and full transmission within the experimental uncertainty. Together with previously demonstrated beam splitters, this phase shifter can be utilized to implement arbitrary single-qubit gates for qubits based on propagating microwave photons. These results complement previous demonstrations of on-demand single-photon sources and detectors, and hence assist in the pursuit of an all-microwave quantum computer based on propagating photons.

摘要

我们基于传输线上的三个等距超导量子干涉器件（SQUID），引入了一种用于传播微波光子的磁通量可调相移器。我们通过实验实现了该相移器，并证明它在实验不确定度范围内产生了广泛的相移和全透射。与先前展示的分束器一起，该相移器可用于为基于传播微波光子的量子比特实现任意单量子比特门。这些结果补充了先前按需单光子源和探测器的演示，因此有助于追求基于传播光子的全微波量子计算机。