Near-field optical tunneling emission enables atomic-scale ultrafast optical microscope

https://phys.org/news/2024-05-physicists-atomic-scale-telegraphy.html

"light oscillogram jumping between 2 atoms measured with temporal precision faster than single oscillation lightwave's cycle... lengthscales of single atoms, timescales faster than trillionth of second... sharp tip acting as antenna focuses light into tiny gap between tip apex/ near-field region sample surface... quantum wave-particle duality manifests...  oscillating electric light field flushes tunneling electrons... all-optical signal measurement... could spark revolution in information transfer. devices of tomorrow.

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