Passive PT dimer experiment using superconducting qubits.

From the article:

Probing Sensitivity Near a Quantum Exceptional Point Using Waveguide Quantum Electrodynamics
Aziza Almanakly, Réouven Assouly, Harry Hanlim Kang, Michael Gingras, Bethany M. Niedzielski, Hannah Stickler, Mollie E. Schwartz, Kyle Serniak, Max Hays, Jeffrey A. Grover, and William D. Oliver
Phys. Rev. Lett. 136, 183601 (2026)

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