Year: 2024
Type: article
Abstract: We propose and experimentally demonstrate a general method allowing us to unravel microscopic noise events that affect a continuous quantum variable. Such unraveling is achieved by frequent measurements of a discrete variable coupled to the continuous one. The experimental realization involves photons traversing a noisy channel. There, their polarization, whose coupling to the photons' spatial wave packet is subjected to stochastic noise, is frequently measured in the quantum Zeno regime. The measurements not only preserve the polarization state, but also enable the recording of the full noise statistics from the spatially resolved detection of the photons emerging from the channel. This method proves the possibility of employing photons as quantum noise sensors and robust carriers of information.
Source: Physical Review Applied
Institutions: Istituto Nazionale di Ricerca Metrologica, Consejo Nacional de Investigaciones Científicas y Técnicas, Institute of Scientific and Technical Research for Defense, AREA Science Park, National Institute of Optics, National Research Council, Weizmann Institute of Science, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, European Laboratory for Non-Linear Spectroscopy, University of Florence
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4392599783