Abdelali Sajia

Abdelali Sajia

Stevens Institute of Technology

H-index: 2

North America-United States

About Abdelali Sajia

Abdelali Sajia, With an exceptional h-index of 2 and a recent h-index of 2 (since 2020), a distinguished researcher at Stevens Institute of Technology, specializes in the field of Classically Entangled Optics, Quantum metrology, Super-resolution, Quantum retrodiction.

Abdelali Sajia Information

University

Stevens Institute of Technology

Position

PhD Candidate

Citations(all)

8

Citations(since 2020)

8

Cited By

3

hIndex(all)

2

hIndex(since 2020)

2

i10Index(all)

0

i10Index(since 2020)

0

Email

University Profile Page

Stevens Institute of Technology

Abdelali Sajia Skills & Research Interests

Classically Entangled Optics

Quantum metrology

Super-resolution

Quantum retrodiction

Top articles of Abdelali Sajia

Superresolution picks entanglement over coherence

Fundamental wave features of light play an important role in the realization of superresolution for two spatially separated point sources. It has been shown that (partial) coherence, which is an inevitable feature in practical light propagation, is harmful to measurement precision thus preventing superresolution. Here we study the quantitative effect of another fundamental feature, entanglement, on the quality of superresolution and compare it with that of coherence. Both single- and two-parameter estimations are analyzed in detail. Surprisingly, contrary to coherence, it is found that superresolution measurement precision (in terms of Fisher Information) can be enhanced as the amount of entanglement increases. More importantly, our analysis shows that non-zero entanglement always guarantees the non-vanishing of Fisher Information. Thus, while coherence is unwanted, entanglement is a favorable feature for superresolution.

Authors

Abdelali Sajia,X-F Qian

Journal

arXiv preprint arXiv:2302.04909

Published Date

2023/2/9

Quantification of Entanglement

Quantum entanglement, a fundamental concept in quantum physics, has been elucidated through the development of Bell’s inequalities. Recent advancements have enabled controlled manipulation and measurement of entangled quantum states. This chapter provides a concise overview of entanglement’s mathematical underpinnings, its manipulation, and quantification. Special attention is given to quantification methods and their implications in quantum information. Key principles and measures are presented to facilitate a foundational understanding. Readers are encouraged to supplement this overview with comprehensive review articles and primary literature for further insights.

Authors

Bilal Benzimoun,Abdelali Sajia

Published Date

2023/11/23

Super-resolution Enhanced by Entanglement

We study effects of entanglement on super-resolution of two spatially separated point-sources. It is found to be a key property that can greatly enhance the credibility of super-resolution.

Authors

Abdelali Sajia,Xiaofeng Qian

Published Date

2022/10/17

Super-resolution of two unbalanced point sources assisted by the entangled partner

Sub-diffraction-limit resolution, or superresolution, has been successfully demonstrated in recent theoretical and experimental studies for two equal-brightness and incoherent point sources. However, practical situations of either nonequal brightness (ie, unbalancedness) or partial coherence are shown to have fatal effects on such superresolution. As a step towards resolving such issues, we consider the effects of both unbalancedness and a form of partial coherence (ie, quantum state coherence) together by including an entangled degree of freedom of the two point sources. Unexpectedly, it is found that the two negative effects can counteraffect each other, thus permitting credible superresolution, when the measurement is analyzed in the entangled partner's rotated basis. The least resolvable non-zero two-source separation is also identified analytically. Our result represents useful guidance towards the …

Authors

Abdelali Sajia,X-F Qian

Journal

Phys. Rev. Research

Published Date

2022/9/29

Super-resolution of two unbalanced sources

Estimation of arbitrary separations between two unbalanced point sources is studied by including the spatial property’s entangled partner. Super-resolution is shown to be achievable with high accuracy through finite values of Fisher information.

Authors

Abdelali Sajia,Xiaofeng Qian

Published Date

2021/11/1

Quantum retrodiction made fully symmetric

Quantum retrodiction is a time-symmetric approach to quantum mechanics with applications in a number of important problems. One of the major challenges to its more widespread applicability is the restriction of its symmetric formalism to unbiased sources. The main result of this paper is to develop a general theory yielding a symmetric formalism for arbitrary sources. We then highlight on a specific example, by presenting the optimal solution to the retrodiction problem that is dual to unambiguous state discrimination, how the generalized approach works. We also show how this formalism leads to a symmetric formulation of the communication channel between Alice and Bob and point to the intrinsic connection between retrodiction and the no-signaling principle.

Authors

Dov Fields,Abdelali Sajia,János A Bergou

Journal

arXiv preprint arXiv:2006.15692

Published Date

2020/6/28

See List of Professors in Abdelali Sajia University(Stevens Institute of Technology)

Abdelali Sajia FAQs

What is Abdelali Sajia's h-index at Stevens Institute of Technology?

The h-index of Abdelali Sajia has been 2 since 2020 and 2 in total.

What are Abdelali Sajia's top articles?

The articles with the titles of

Superresolution picks entanglement over coherence

Quantification of Entanglement

Super-resolution Enhanced by Entanglement

Super-resolution of two unbalanced point sources assisted by the entangled partner

Super-resolution of two unbalanced sources

Quantum retrodiction made fully symmetric

are the top articles of Abdelali Sajia at Stevens Institute of Technology.

What are Abdelali Sajia's research interests?

The research interests of Abdelali Sajia are: Classically Entangled Optics, Quantum metrology, Super-resolution, Quantum retrodiction

What is Abdelali Sajia's total number of citations?

Abdelali Sajia has 8 citations in total.

What are the co-authors of Abdelali Sajia?

The co-authors of Abdelali Sajia are Xiao-Feng Qian.

    Co-Authors

    H-index: 16
    Xiao-Feng Qian

    Xiao-Feng Qian

    Stevens Institute of Technology

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