Ptychographic reconstruction of pure quantum states
Carregando...
Data
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Minas Gerais
Descrição
Tipo
Artigo de periódico
Título alternativo
Primeiro orientador
Membros da banca
Resumo
The quantum analogue of ptychography, a powerful coherent diffractive imaging technique, is a simple method for reconstructing 𝑑-dimensional pure states. It relies on measuring partially overlapping parts of the input state in a single orthonormal basis and feeding the outcomes to an iterative phase retrieval algorithm for postprocessing. We provide a proof of concept demonstration of this method by determining pure states given by superpositions of 𝑑 transverse spatial modes of an optical field. A set of n rank-r projectors, diagonal in the spatial mode basis, is used to generate 𝑛 partially overlapping parts of the input, and each part is projectively measured in the Fourier transformed basis. For d up to 32, we successfully reconstructed hundreds of random states using n=5 and n=d rank-⌈d/2⌉ projectors. The extension of quantum ptychography for other types of photonic spatial modes is outlined.
Abstract
Assunto
Luz, Microscópio
Palavras-chave
Ptychographic reconstruction, Quantum states
Citação
Departamento
Curso
Endereço externo
https://opg.optica.org/ol/abstract.cfm?uri=ol-45-21-6002