English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Flat-optics generation of broadband photon pairs with tunable polarization entanglement

MPS-Authors
/persons/resource/persons276625

Sultanov,  Vitaliy
Friedrich-Alexander Universität Erlangen-Nürnberg;
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons231249

Santiago-Cruz,  José Tomás
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander Universität Erlangen-Nürnberg;

/persons/resource/persons201034

Chekhova,  Maria V.
Friedrich-Alexander Universität Erlangen-Nürnberg;
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

ol-47-15-3872.pdf
(Publisher version), 3MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Sultanov, V., Santiago-Cruz, J. T., & Chekhova, M. V. (2022). Flat-optics generation of broadband photon pairs with tunable polarization entanglement. Optics Letters, 47(15), 3872-3875. doi:10.1364/OL.458133.


Cite as: https://hdl.handle.net/21.11116/0000-000A-CDCE-8
Abstract
The concept of “flat optics” is quickly conquering different fields of photonics, but its implementation in quantum optics is still in its infancy. In particular, polarization entanglement, strongly required in quantum photonics, is so far not realized on “flat” platforms. Meanwhile, relaxed phase matching of “flat” nonlinear optical sources enables enormous freedom in tailoring their polarization properties. Here we use this freedom to generate photon pairs with tunable polarization entanglement via spontaneous parametric downconversion (SPDC) in a 400 nm GaP film. By changing the pump polarization, we tune the polarization state of photon pairs from maximally entangled to almost disentangled, which is impossible in a single bulk SPDC source. Polarization entanglement, together with the broadband frequency spectrum, results in an ultranarrow (12 fs) Hong–Ou–Mandel effect and promises extensions to hyperentanglement.