Fieldoscopy at the Quantum Limit

• URL: http://arxiv.org/abs/2504.13121v1
• Date: Thu, 17 Apr 2025 17:38:46 GMT
• Title: Fieldoscopy at the Quantum Limit
• Authors: Dmitry A. Zimin, Arjun Ashoka, Florentin Reiter, Akshay Rao,
• Abstract summary: We observe a clear transition from classical to quantum nature of light.<n>We reach unprecedented yoctojoule-level sensitivity and a dynamic range exceeding 90 decibels.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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 transition from classical to quantum nature of light that agrees with our Monte Carlo model. We reach unprecedented yoctojoule-level sensitivity and a dynamic range exceeding 90 decibels. We utilize this capability to measure time-dependent 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.

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