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Description
A neutron whispering gallery state is a quantum state localized on the surface of a material bound by centrifugal force and material potential. Precise measurement of this quantum state makes it possible to verify quantum mechanics in non-inertial systems, determine the shape of the material surface potential, and search for hypothetical short-range interactions on the nm scale. We observed neutron whispering gallery states using the J-PARC pulsed cold neutron source. Comparing the results of the measurements with theoretical calculations, there were some differences larger than the systematic error, but the agreement was within 2% for the centrifugal acceleration of 7 × 10^7 m/s^2. In addition, by comparing the interference fringes appearing in the wavelength distribution with the theoretical curve, it was shown that the sensitivity could be improved by two orders of magnitude.
