Robust Weak Measurements with Certified Single Photons
Abstract Since their introduction, weak measurements and weak values have served as a cornerstone for investigating quantum measurement theory, as well as a significant tool for quantum metrology and sensing. Here, it is shown how (anomalous) weak values can be reliably obtained with single quantum systems even without averaging over multiple experimental runs, thanks to a measurement protocol dubbed robust weak measurement . Specifically, robust weak measurements are exploited to extract the weak value of the polarization of heralded single photons, certifying the true single‐particle, nonclassical nature of weak values.
Authors
- Lev Vaidman (ORCID: https://orcid.org/0000-0001-5907-7553)
- Federica Villa (ORCID: https://orcid.org/0000-0002-9840-0269)
- Enrico Rebufello (ORCID: https://orcid.org/0000-0002-8374-1976)
- Marco Genovese (ORCID: https://orcid.org/0000-0001-9186-8849)
- Jan Dziewior (ORCID: https://orcid.org/0000-0001-8887-181X)
- Marco Gramegna (ORCID: https://orcid.org/0000-0002-5725-0444)
- Ivo Pietro Degiovanni (ORCID: https://orcid.org/0000-0003-0332-3115)
- Alessio Avella (ORCID: https://orcid.org/0000-0002-2148-6228)
- Rudi Lussana (ORCID: https://orcid.org/0000-0001-5704-0343)
- Eliahu Cohen (ORCID: https://orcid.org/0000-0001-6198-0725)
- Fabrizio Piacentini (ORCID: https://orcid.org/0000-0002-8098-5692)
- Muriel A. de Souza (ORCID: https://orcid.org/0000-0003-2049-9577)
Institutions
- Bar-Ilan University (IL)
- Tel Aviv University (IL)
- Chapman University (US)
- Instituto Nacional de Metrologia, Qualidade e Tecnologia (BR)
- Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT)
- Max Planck Institute of Quantum Optics (DE)
- Istituto Nazionale di Ricerca Metrologica (IT)
- Ludwig-Maximilians-Universität München (DE)
- Politecnico di Milano (IT)
Publication Details
- Journal
- Advanced Quantum Technologies
- Published
- 2025-04-29
- DOI
- https://doi.org/10.1002/qute.202400482
- Citations
- 1
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 2.48
Funders
- Compagnia di San Paolo
- European Partnership on Metrology
- European Commission
- Ministero dell'Università e della Ricerca
- HORIZON EUROPE Framework Programme
- HORIZON EUROPE Excellent Science
- HORIZON EUROPE Digital, Industry and Space