Quantum holograms can send messages that disappear
Polarised light can make messages encoded in a quantum hologram disappearHong Liang, Wai Chun Wong, Tailin An, Jensen Li 2024 A quantum disappearing act could make it possible to embed…
Doughnut-shaped swirls of laser light can be used to transmit images
Smoke rings are similar to the vortices created in laser lightYevhen Rychko / Alamy Stock Photo Short pulses from a laser can be twisted into a series of doughnut-like vortices,…
