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Superconducting microwave cavity towards controlling the motion of polar molecules

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Abstract

We propose the use of superconducting microwave cavities for the focusing and deceleration of cold polar molecular beams. A superconducting cavity with a high quality factor produces a large ac Stark shift in polar molecules, which allow us to efficiently control molecular motion. Our discussion is based on the experimental characterization of a prototype cavity: a lead–tin-coated cylindrical copper cavity, which has a quality factor of 106 and tolerates several watts of input power. Such a microwave device provides a powerful way to control molecules not only in low-field-seeking states, but also in high-field-seeking states such as the ground rotational state.

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Acknowledgments

We acknowledge D. DeMille and G. Meijer for their helpful advice and M. Schnell, A. Simon, H. Odashima, M. Kajita, F. Matsushima, and K. Kobayashi for their fruitful discussion. We also thank B. Ramshaw and D. Bonn for helping us perform the electroplating. This work is supported by an NSERC Discovery Grant and funds from CFI to CRUCS at UBC. This work is also partially supported by Grant-in-Aid for Scientific Research of JSPS (19840021, 21740300, 22104504), Matsuo foundation, Inamori foundation. K.E. acknowledges support from the Excellent Young Researchers Overseas Visit Program of JSPS for allowing him to visit UBC to perform this research.

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Authors and Affiliations

  1. Department of Physics, University of Toyama, 3190 Gofuku, Toyama, 930-8555, Japan

    Katsunari Enomoto & Yoshiki Moriwaki

  2. Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada

    Pavle Djuricanin, Ilja Gerhardt & Takamasa Momose

  3. Department of Physics and Astronomy, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada

    Omid Nourbakhsh, Walter Hardy & Takamasa Momose

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  1. Katsunari Enomoto
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  2. Pavle Djuricanin
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  3. Ilja Gerhardt
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  4. Omid Nourbakhsh
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  5. Yoshiki Moriwaki
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  6. Walter Hardy
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  7. Takamasa Momose
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Correspondence to Katsunari Enomoto.

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Enomoto, K., Djuricanin, P., Gerhardt, I. et al. Superconducting microwave cavity towards controlling the motion of polar molecules. Appl. Phys. B 109, 149–157 (2012). https://doi.org/10.1007/s00340-012-5192-5

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  • DOI: https://doi.org/10.1007/s00340-012-5192-5

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