Parallelized projective measurements for spatial photonic qudits estimation.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-10-01 DOI:10.1364/OL.570564

Quimey Pears Stefano, Lorena Rebón, Claudio Iemmi

引用次数: 0

Abstract

We present a quantum state tomography method that enables the reconstruction of arbitraryd-dimensional quantum states encoded in the discretized transverse momentum of photons, by using onlyd+1 experimental settings. To this end, we identify a family of bases with the property that the outcomes of a projective measurement are spatially multiplexed on the interference pattern of the projected state. Using the proposed scheme, we performed, as a proof-of-principle, an experimental reconstruction of d=6-dimensional states, for which a complete set of mutually unbiased bases does not exist. We obtained fidelity values above 0.97 for both pure and mixed states, reducing the number of experimental settings from 42 to only 7.

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空间光子量纲估计的平行射影测量。

我们提出了一种量子态层析成像方法，通过只使用1 +1实验设置，可以重建在离散光子横向动量中编码的任意维量子态。为此，我们确定了一组基，其性质是投影测量的结果在投影状态的干涉模式上是空间复用的。使用该方案，作为原理证明，我们进行了d=6维状态的实验重建，其中不存在完整的互无偏基集。我们获得了纯态和混合态的保真度值都在0.97以上，将实验设置的数量从42个减少到只有7个。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.