Flux-tunable phase shifter for microwaves

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

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
122 Downloads (Pure)


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.
Original languageEnglish
Article number14713
Pages (from-to)1-6
JournalScientific Reports
Publication statusPublished - 7 Nov 2017
MoE publication typeA1 Journal article-refereed


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