Mechanical on chip microwave circulator Journal Article

Author(s): Barzanjeh, Shabir; Wulf, Matthias; Peruzzo, Matilda; Kalaee, Mahmoud; Dieterle, Paul B; Painter, Oskar; Fink, Johannes
Article Title: Mechanical on chip microwave circulator
Affiliation IST Austria
Abstract: Nonreciprocal circuit elements form an integral part of modern measurement and communication systems. Mathematically they require breaking of time-reversal symmetry, typically achieved using magnetic materials and more recently using the quantum Hall effect, parametric permittivity modulation or Josephson nonlinearities. Here we demonstrate an on-chip magnetic-free circulator based on reservoir-engineered electromechanic interactions. Directional circulation is achieved with controlled phase-sensitive interference of six distinct electro-mechanical signal conversion paths. The presented circulator is compact, its silicon-on-insulator platform is compatible with both superconducting qubits and silicon photonics, and its noise performance is close to the quantum limit. With a high dynamic range, a tunable bandwidth of up to 30 MHz and an in situ reconfigurability as beam splitter or wavelength converter, it could pave the way for superconducting qubit processors with multiplexed on-chip signal processing and readout.
Keywords: Photonic devices; Integrated optics; microwave photonics
Journal Title: Nature Communications
Volume: 8
Issue 1
ISSN: 2041-1723
Publisher: Nature Publishing Group  
Date Published: 2017-10-16
Start Page: Article number: 953
Copyright Statement: CC BY
DOI: 10.1038/s41467-017-01304-x
Notes: We thank Nikolaj Kuntner for the development of the Python virtual instrument panel and Georg Arnold for supplementary device simulations. This work was supported by IST Austria and the European Union’s Horizon 2020 research and innovation program under grant agreement No 732894 (FET Proactive HOT). S.B. acknowledges support from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska Curie grant agreement No 707438 (MSC-IF SUPEREOM). OJP acknowledges support from the AFOSR-MURI Quantum Photonic Matter, the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (grant PHY-1125565) with support of the Gordon and Betty Moore Foundation, and the Kavli Nanoscience Institute at Caltech.
Open access: yes (OA journal)