Video Experimental Relacionado

Updated: Feb 11, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

Fieldoscopia en el límite cuántico

Dmitry A Zimin^1,2, Arjun Ashoka³, Florentin Reiter^4,5

¹Cavendish Laboratory, Department of Physics, Cambridge University, CB3 0HF, Cambridge, United Kingdom. dzimin@ethz.ch.

Light, science & applications

|February 9, 2026

Abstract:

We demonstrate a novel concept for measuring time-varying electric field transients of petahertz-scale photons down to a single-photon regime. We observe a clear breakdown of the classical regime consistent with our Monte Carlo model. We reach unprecedented yoctojoule-level (10⁻²⁴ J) sensitivity and a dynamic range exceeding 90 decibels. We utilize this capability to measure intrapulse light coherence - a regime inaccessible to conventional, time-averaged spectroscopy. This opens new avenues for quantum information, cryptography, and quantum light-matter interactions on sub-cycle time scales with attosecond precision.

Palabras clave:

campo eléctrico fotones yoctojulio espectroscopia óptica cuántica física de attosegundos información cuántica

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