Talbot self-imaging and two-photon interference in ring-core fibers
Eriksson, Matias; Stickler, Benjamin A.; Kopf, Lea; Hiekkamäki, Markus; Gumenyuk, Regina; Chamorovskiy, Yuri; Ramelow, Sven; Fickler, Robert (2021-12)
Eriksson, Matias
Stickler, Benjamin A.
Kopf, Lea
Hiekkamäki, Markus
Gumenyuk, Regina
Chamorovskiy, Yuri
Ramelow, Sven
Fickler, Robert
12 / 2021
063512
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202201211495
https://urn.fi/URN:NBN:fi:tuni-202201211495
Kuvaus
Peer reviewed
Tiivistelmä
Wave propagation on the surface of cylinders exhibits interferometric self-imaging, much like the Talbot effect in the near-field diffraction at periodic gratings. We report the experimental observation of the cylindrical Talbot carpet in weakly guiding ring-core fibers for classical light fields. We further show that the ring-core fiber acts as a higher-order optical beamsplitter for single photons, whose output can be controlled by the relative phase between the input light fields. By also demonstrating high-quality two-photon interference between indistinguishable photons sent into the ring-core fiber, our findings open the door to applications in optical telecommunications as a compact beam multiplexer as well as in quantum information processing tasks as a scalable realization of a linear optical network.
Kokoelmat
- TUNICRIS-julkaisut [16929]