Informationally complete orbital-angular-momentum tomography with intensity measurements

Autor(es)

de Oliveira, M. Gil ; Santos Junior, A. L. S. ; Lima, P. M. R. ; Barbosa, A. C. ; Silva, B. Pinheiro da ; Padua, S. ; Khoury, A. Z.

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW APPLIED; v. 24, n. 2, p. 11-pg., 2025-08-13.

Resumo

In this work, we study the tomography of the spatial structure of light. We develop a simple technique that allows one to perform tomography over the space of fixed-order modes. The technique is based on two spatially resolved intensity measurements, the second of which is performed after the light field has undergone an astigmatic transformation implemented by a tilted lens. We demonstrate that this method is informationally complete within the considered subspaces, and this is experimentally verified in both the intense and photocount regimes. We also study the effect of obstructions on our ability to reconstruct the states. The work presented is expected to help the development of characterization techniques in the field of structured light and in its application to both classical and quantum information protocols. (AU)

• Processo FAPESP: 21/06823-5 - Rede Rio quântica
• Beneficiário: Antonio Zelaquett Khoury
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 22/15035-3 - Comunicação ótica com luz estruturada
• Beneficiário: Altilano Cristino Barbosa
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 22/15036-0 - Interação de luz estruturada com meios não lineares
• Beneficiário: André Luiz da Silva Santos Junior
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto