Ultrastrong magnetic light-matter interaction with cavity mode engineering

Abstract Magnetic interaction between photons and dipoles is essential in electronics, sensing, spectroscopy, and quantum computing. However, its weak strength often requires resonators to confine and store the photons. Here, we present mode engineering techniques to create resonators with ultrasmal...

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Main Authors: Hyeongrak Choi, Dirk Englund
Format: Article
Language:English
Published: Nature Portfolio 2023-05-01
Series:Communications Physics
Online Access:https://doi.org/10.1038/s42005-023-01224-x
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author Hyeongrak Choi
Dirk Englund
author_facet Hyeongrak Choi
Dirk Englund
author_sort Hyeongrak Choi
collection DOAJ
description Abstract Magnetic interaction between photons and dipoles is essential in electronics, sensing, spectroscopy, and quantum computing. However, its weak strength often requires resonators to confine and store the photons. Here, we present mode engineering techniques to create resonators with ultrasmall mode volume and ultrahigh quality factor. In particular, we show that it is possible to achieve an arbitrarily small mode volume only limited by materials or fabrication with minimal quality-factor degradation. We compare mode-engineered cavities in a trade-off space and show that the magnetic interaction can be strengthened more than 1016 times compared to free space. Proof-of-principles experiments using an ensemble of diamond nitrogen-vacancy spins show good agreement with our theoretical predictions. These methods enable new applications from high-cooperativity microwave-spin coupling in quantum computing or compact electron paramagnetic resonance sensors to fundamental science such as dark matter searches.
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spelling doaj.art-024e1f8ddc8e457b9ae2f7a2af1182862023-05-21T11:18:24ZengNature PortfolioCommunications Physics2399-36502023-05-01611910.1038/s42005-023-01224-xUltrastrong magnetic light-matter interaction with cavity mode engineeringHyeongrak Choi0Dirk Englund1Research Laboratory of Electronics, Massachusetts Institute of TechnologyResearch Laboratory of Electronics, Massachusetts Institute of TechnologyAbstract Magnetic interaction between photons and dipoles is essential in electronics, sensing, spectroscopy, and quantum computing. However, its weak strength often requires resonators to confine and store the photons. Here, we present mode engineering techniques to create resonators with ultrasmall mode volume and ultrahigh quality factor. In particular, we show that it is possible to achieve an arbitrarily small mode volume only limited by materials or fabrication with minimal quality-factor degradation. We compare mode-engineered cavities in a trade-off space and show that the magnetic interaction can be strengthened more than 1016 times compared to free space. Proof-of-principles experiments using an ensemble of diamond nitrogen-vacancy spins show good agreement with our theoretical predictions. These methods enable new applications from high-cooperativity microwave-spin coupling in quantum computing or compact electron paramagnetic resonance sensors to fundamental science such as dark matter searches.https://doi.org/10.1038/s42005-023-01224-x
spellingShingle Hyeongrak Choi
Dirk Englund
Ultrastrong magnetic light-matter interaction with cavity mode engineering
Communications Physics
title Ultrastrong magnetic light-matter interaction with cavity mode engineering
title_full Ultrastrong magnetic light-matter interaction with cavity mode engineering
title_fullStr Ultrastrong magnetic light-matter interaction with cavity mode engineering
title_full_unstemmed Ultrastrong magnetic light-matter interaction with cavity mode engineering
title_short Ultrastrong magnetic light-matter interaction with cavity mode engineering
title_sort ultrastrong magnetic light matter interaction with cavity mode engineering
url https://doi.org/10.1038/s42005-023-01224-x
work_keys_str_mv AT hyeongrakchoi ultrastrongmagneticlightmatterinteractionwithcavitymodeengineering
AT dirkenglund ultrastrongmagneticlightmatterinteractionwithcavitymodeengineering