Momentum-entangled two-photon interference for quantum-limited transverse-displacement estimation
The authors present a method for displacement estimation of two momentum-entangled photons interfering on a beam splitter using momentum-resolving detectors and coincidence measurements. Notably, they are able to achieve the ultimate quantum sensitivity, and the precision achieved with their scheme is independent of the value of the displacement. They also show that bucket detectors can be optimally employed for the estimation of small displacements.
Authors
- Danilo Triggiani (ORCID: https://orcid.org/0000-0001-8851-6391)
- Vincenzo Tamma (ORCID: https://orcid.org/0000-0002-1963-3057)
Institutions
- Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT)
- University of Portsmouth (GB)
- Polytechnic University of Bari (IT)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2025-03-07
- DOI
- https://doi.org/10.1103/physreva.111.032605
- Citations
- 4
- Primary Topic
- Advanced Optical Sensing Technologies
- Type
- article
- Field-Weighted Citation Impact
- 4.77
Funders
- Agenzia Spaziale Italiana
- Air Force Office of Scientific Research