Manipulating the symmetry of transverse momentum entangled biphoton states

Bell states are a fundamental resource in photonic quantum information processing. These states have been generated successfully in many photonic degrees of freedom. Their manipulation, however, in the momentum space remains challenging. Here, we present a scheme for engineering the symmetry of two-...

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Bibliographic Details
Published in:Optics express 2022-06, Vol.30 (12), p.21276-21281
Main Authors: Gao, Xiaoqin, Zhang, Yingwen, D’Errico, Alessio, Hufnagel, Felix, Heshami, Khabat, Karimi, Ebrahim
Format: Article
Language:English
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Summary:Bell states are a fundamental resource in photonic quantum information processing. These states have been generated successfully in many photonic degrees of freedom. Their manipulation, however, in the momentum space remains challenging. Here, we present a scheme for engineering the symmetry of two-photon states entangled in the transverse momentum degree of freedom through the use of a spatially variable phase object. We demonstrate how a Hong-Ou-Mandel interferometer must be constructed to verify the symmetry in momentum entanglement via photon “bunching/anti-bunching” observation. We also show how this approach allows generating states that acquire an arbitrary phase under the exchange operation.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.458776