Hybrid microwave-optical scanning probe for addressing solid-state spins in nanophotonic cavities

SONGTAO CHEN, SALIM OURARI, MOUKTIK RAHA, CHRISTOPHER M. PHENICIE, MEHMET T. UYSAL, JEFF D. THOMPSON

Research output: Contribution to journalArticlepeer-review

Abstract

Spin-photon interfaces based on solid-state atomic defects have enabled a variety of key applications in quantum information processing. To maximize the light-matter coupling strength, defects are often placed inside nanoscale devices. Efficiently coupling light and microwave radiation into these structures is an experimental challenge, especially in cryogenic or high vacuum environments with limited sample access. In this work, we demonstrate a fiber-based scanning probe that simultaneously couples light into a planar photonic circuit and delivers high power microwaves for driving electron spin transitions. The optical portion achieves 46% one-way coupling efficiency, while the microwave portion supplies an AC magnetic field with strength up to 9 Gauss at 10 Watts of input microwave power. The entire probe can be scanned across a large number of devices inside a 3He cryostat without free-space optical access. We demonstrate this technique with silicon nanophotonic circuits coupled to single Er3+ ions.

Original languageEnglish (US)
Pages (from-to)4902-4911
Number of pages10
JournalOptics Express
Volume29
Issue number4
DOIs
StatePublished - Feb 15 2021

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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