Ptychographic reconstruction of pure quantum states
| dc.creator | Mário Foganholi Fernandes | |
| dc.creator | Miguel Ángel Solís Prosser | |
| dc.creator | Leonardo Teixeira Neves | |
| dc.date.accessioned | 2025-02-26T15:32:53Z | |
| dc.date.accessioned | 2025-09-09T00:35:07Z | |
| dc.date.available | 2025-02-26T15:32:53Z | |
| dc.date.issued | 2020 | |
| dc.identifier.doi | https://doi.org/10.1364/OL.401832 | |
| dc.identifier.issn | 1539-4794 | |
| dc.identifier.uri | https://hdl.handle.net/1843/80460 | |
| dc.language | eng | |
| dc.publisher | Universidade Federal de Minas Gerais | |
| dc.relation.ispartof | Optics Letters | |
| dc.rights | Acesso Restrito | |
| dc.subject | Luz | |
| dc.subject | Microscópio | |
| dc.subject.other | Ptychographic reconstruction | |
| dc.subject.other | Quantum states | |
| dc.title | Ptychographic reconstruction of pure quantum states | |
| dc.type | Artigo de periódico | |
| local.citation.epage | 6005 | |
| local.citation.issue | 21 | |
| local.citation.spage | 6002 | |
| local.citation.volume | 45 | |
| local.description.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. | |
| local.identifier.orcid | https://orcid.org/0000-0002-2856-441X | |
| local.identifier.orcid | https://orcid.org/0000-0002-9589-1939 | |
| local.publisher.country | Brasil | |
| local.publisher.department | ICX - DEPARTAMENTO DE FÍSICA | |
| local.publisher.initials | UFMG | |
| local.url.externa | https://opg.optica.org/ol/abstract.cfm?uri=ol-45-21-6002 |
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