Optimal Pump Shaping for Entanglement Control in Any Countable Basis

Bornman, Nicholas; Buono, Wagner Tavares; Lovemore, Michael; Forbes, Andrew

doi:10.1002/qute.202100066

Cited by 13 publications

(3 citation statements)

References 55 publications

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“…Alternatively, an exciting and emerging approach is to use non-linear optics for high-dimensional state creation, control and detection. To this end, recent progress in classical pump shaping to control entanglement is gaining versatility 227 , and may be a simple future resource. This approach is based on non-linear optics at the source of the entanglement.…”

Section: Higher-dimensional and Multiple Dof Classically Structured L...mentioning

confidence: 99%

Towards higher-dimensional structured light

2022

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Structured light refers to the arbitrarily tailoring of optical fields in all their degrees of freedom (DoFs), from spatial to temporal. Although orbital angular momentum (OAM) is perhaps the most topical example, and celebrating 30 years since its connection to the spatial structure of light, control over other DoFs is slowly gaining traction, promising access to higher-dimensional forms of structured light. Nevertheless, harnessing these new DoFs in quantum and classical states remains challenging, with the toolkit still in its infancy. In this perspective, we discuss methods, challenges, and opportunities for the creation, detection, and control of multiple DoFs for higher-dimensional structured light. We present a roadmap for future development trends, from fundamental research to applications, concentrating on the potential for larger-capacity, higher-security information processing and communication, and beyond.

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Section: Higher-dimensional and Multiple Dof Classically Structured L...mentioning

confidence: 99%

Towards higher-dimensional structured light

2022

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“…While the assumptions we will make simplify the calculations that follow, in general, the two photon field amplitude of the SPDC state is determined by the phase matching conditions and pump photon profile [41]. This can have an impact on the spatial bandwidth of the SPDC state [42].…”

Section: Spatial-to-polarisation Mode Conversionmentioning

confidence: 99%

An all-digital approach for versatile hybrid entanglement generation

Nape¹,

Oliveira²,

Slabbert³

et al. 2022

J. Opt.

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Hybrid entangled states present non-local correlations between photons with independent degrees of freedom and are currently gaining much interest. In particular, hybrid entanglement between polarisation and spatial modes of two photons are promising candidates for future heterogeneous quantum channels, but their versatility is limited by current generation methods that rely on static elements. Here, we present a technique that exploits polarisation and spatial mode dependent phase modulation in an all-digital approach using spatial light modulators. We show that we can tailor hybrid entangled states using spatial modes with Cylindrical and Cartesian symmetry, making our approach flexible, dynamic, and adaptable.

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“…For example, spatial light modulators (SLMs) can be placed in the pump beam or the photon pairs path to manipulate their spatial properties. They enable tailoring of the spatial entanglement between photons propagating in free space by manipulating their orbital angular spectrum [14][15][16][17][18][19][20], by shaping momentum-position correlations [21][22][23] or by tuning the pump spatial coherence [24,25]. In addition, they can also be used to control photon pair propagation through complex media such as multimode fibers [26][27][28] and scattering layers [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Shaping the spatial correlations of entangled photon pairs

Cameron,

Courme,

Faccio

et al. 2024

J. Phys. Photonics

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Quantum imaging enhances imaging systems performance, potentially surpassing fundamentallimits such as noise and resolution. However, these schemes have limitations and are still a long wayfrom replacing classical techniques. Therefore, there is a strong focus on improving the practicalityof quantum imaging methods, with the goal of finding real-world applications. With this in mind,in this tutorial we describe how the concepts of classical light shaping can be applied to imagingschemes based on entangled photon pairs. We detail two basic experimental configurations in whicha spatial light modulator is used to shape the spatial correlations of a photon pair state and highlightthe key differences between this and classical shaping. We then showcase two recent examples thatexpand on these concepts to perform aberration and scattering correction with photon pairs. Weinclude specific details on the key steps of these experiments, with the goal that this can be used asa guide for building photon-pair-based imaging and shaping experiments.

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Optimal Pump Shaping for Entanglement Control in Any Countable Basis

Cited by 13 publications

References 55 publications

Towards higher-dimensional structured light

Towards higher-dimensional structured light

An all-digital approach for versatile hybrid entanglement generation

Shaping the spatial correlations of entangled photon pairs

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