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quant-ph2026
Optomechanical Detection of Individual Gas Collisions
Yu-Han Tseng, Clarke A. Hardy, T. W. Penny +4
We experimentally demonstrate the detection of momentum transfers from individual collisions of Kr, Xe, and SF with an optically levitated nanoparticle, finding good agreement…
physics.ins-det2026
Decay-Resolved Charge Changes from Radioactive Decays in Levitated Microparticles
Jiaxiang Wang, T. W. Penny, Yu-Han Tseng +2
We measure event-by-event discrete changes in the net electric charge of an optically levitated silica microsphere arising from individual radioactive decays within the sphere, in…