Engineering quantum states from a spatially structured quantum eraser
Year: 2024
Authors: Schiano C., Sephton B., Aiello R., Graffitti F., Lal N., Chiuri A., Santoro S., Amato L.S., Marrucci L., De Lisio C., D’Ambrosio V.
Autors Affiliation: Univ Napoli Federico II, Complesso Univ Monte S Angelo, Dipartimento Fis, Via Cintia, I-80126 Naples, Italy; Heriot Watt Univ, Inst Photon & Quantum Sci, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Scotland; Enea Ctr Ric Frascati, Via E Fermi 45, I-00044 Frascati, Italy; Italian Space Agcy ASI, Ctr Geodesia Spaziale Giuseppe Colombo, I-75100 Matera, Italy; Inst Appl Sci & Intelligent Syst, CNR, ISASI, Via Campi Flegrei 34, I-80078 Pozzuoli, NA, Italy.
Abstract: Quantum interference is a central resource in many quantum-enhanced tasks, from computation to communication. While usually occurring between identical photons, it can also be enabled by performing projective measurements that render the photons indistinguishable, a process known as quantum erasing. Structured light forms another hallmark of photonics, achieved by manipulating the degrees of freedom of light, and enables a multitude of applications in both classical and quantum regimes. By combining these ideas, we design and experimentally demonstrate a simple and robust scheme that tailors quantum interference to engineer photonic states with spatially structured coalescence along the transverse profile, a type of quantum mode with no classical counterpart. To achieve this, we locally tune the distinguishability of a photon pair by spatially structuring the polarization and creating a structured quantum eraser. We believe that these spatially engineered multiphoton quantum states may be of significance in fields such as quantum metrology, microscopy, and communication.
Journal/Review: SCIENCE ADVANCES
Volume: 10 (30) Pages from: eadm9278-1 to: eadm9278-8
More Information: Acknowledgments: We thank R. Giordano for help with the coincidence counting electronics and acknowledge support from Amsterdam Scientific instruments for code assisting with the use of the timePix3. Funding: this work was supported by the italian Ministry of Research (MUR) with PRin 2017 project \u201Cinteracting photons in polariton circuits\u201D(inPhoPOl) (R.A., n.l., and v.d.), PnRR project Pe0000023-nQSti (l.M., c.d.l., and v.d.), nAtO through SPS Project hAdeS\u2013MYP G5839 (A.c. and S.S.), and the italian Space Agency (ASi) with \u201Chigh dimensional quantum information\u201D(hdQi) project (B.S., c.d.l., and v.d.). Author contributions: conceptualization: F.G. and v.d. Methodology: c.S., F.G., l.M., and v.d. experiment: c.S., B.S., R.A., n.l., A.c., S.S., c.d.l., and v.d. Formal Analysis: c.S., B.S., and l.M. visualization: c.S., B.S., and c.d.l. Supervision: v.d. Writing, review, and editing: All authors. Competing interests: the authors declare that they have no competing interests. Data and materials availability: All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials.KeyWords: 2-photon Interference; Entanglement; PhotonsDOI: 10.1126/sciadv.adm9278Citations: 1data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2025-01-12References taken from IsiWeb of Knowledge: (subscribers only)