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Research Highlight | Center for Nanoscale Materials

Being exceptional in higher dimensions

In a study published in Physical Review Letters, researchers experimentally observed a continuous three-dimensional surface of exceptional points by constructing a four-dimensional synthetic space using magnon polaritons.

Scientific Achievement

An exceptional surface — a continuous three-dimensional surface of exceptional points — is experimentally observed for the first time by constructing a four-dimensional synthetic space using magnon polaritons.

Significance and Impact

This work provides a pathway to engineer new quantum mechanical systems and new opportunities for magnon-based quantum information processing such as robust mode conversion and high-sensitivity sensing.

Research Details

  • The magnon-photon coupling was characterized at the Center for Nanoscale Materials (CNM) by measuring reflection spectra in the microwave frequency range with a polariton system consisting of a specially designed microwave cavity and a magnon cavity.

Work was performed in part at the CNM.

DOI10.1103/PhysRevLett.123.237202

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About Argonne’s Center for Nanoscale Materials
The Center for Nanoscale Materials is one of the five DOE Nanoscale Science Research Centers, premier national user facilities for interdisciplinary research at the nanoscale supported by the DOE Office of Science. Together the NSRCs comprise a suite of complementary facilities that provide researchers with state-of-the-art capabilities to fabricate, process, characterize and model nanoscale materials, and constitute the largest infrastructure investment of the National Nanotechnology Initiative. The NSRCs are located at DOE’s Argonne, Brookhaven, Lawrence Berkeley, Oak Ridge, Sandia and Los Alamos National Laboratories. For more information about the DOE NSRCs, please visit https://​sci​ence​.osti​.gov/​U​s​e​r​-​F​a​c​i​l​i​t​i​e​s​/​U​s​e​r​-​F​a​c​i​l​i​t​i​e​s​-​a​t​-​a​-​G​lance.

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