Experimental quantum noise sensing via quantum Zeno and anti-Zeno effects

S. Virzì; L. T. Knoll; A. Avella; F. Piacentini; S. Gherardini; T. Opatrný; A. G. Kofman; G. Kurizki; M. Gramegna; F. Caruso; I. P. Degiovanni; M. Genovese

doi:10.1117/12.3022199

11 June 2024 Experimental quantum noise sensing via quantum Zeno and anti-Zeno effects

S. Virzì, L. T. Knoll, A. Avella, F. Piacentini, S. Gherardini, T. Opatrný, A. G. Kofman, G. Kurizki, M. Gramegna, F. Caruso, I. P. Degiovanni, M. Genovese

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Proceedings Volume PC12993, Quantum Technologies 2024; PC129930H (2024) https://doi.org/10.1117/12.3022199
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Fundamental phenomena like Quantum Zeno effect (QZE) and Anti-Zeno Effect (AZE) have been recognized as relevant tools for quantum control. Along this line, here we present two experiments in which we demonstrate the capability to extract information on noise events by exploiting QZE and AZE. In the first experiment, we realize noise diagnostics by frequent measurement, showing how a single photon undergoing a noise process (e.g., random polarization fluctuations) can diagnose non-Markovian temporal correlations within such a noise. In the second one, instead, we show how, by protecting via QZE a photonic qubit in a noisy quantum channel, it is possible to estimate the statistical distribution of the microscopic noise (decoherence) events by using the qubit itself as a probe. These techniques can become indispensable under extremely faint illumination, when traditional interferometric methods are usually ineffective.

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Citation Download Citation

S. Virzì, L. T. Knoll, A. Avella, F. Piacentini, S. Gherardini, T. Opatrný, A. G. Kofman, G. Kurizki, M. Gramegna, F. Caruso, I. P. Degiovanni, and M. Genovese "Experimental quantum noise sensing via quantum Zeno and anti-Zeno effects", Proc. SPIE PC12993, Quantum Technologies 2024, PC129930H (11 June 2024); https://doi.org/10.1117/12.3022199

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