Toward Generation of Spatially-Entangled Photon Pairs in a Few-Mode Fiber

Shamsshooli, Afshin; Guo, Chunyu; Parmigiani, Francesca; Li, Xiaoying; Vasilyev, Michael

doi:10.1364/cleo_at.2020.jth2a.27

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…Similar spatially-entangled photon pairs can also be generated directly in the FMF [26], but, in contrast to PPLN, this requires a different set of two IM-FWM processes, as we have shown for both (LP01, LP11a) [27,28] and orbital-angularmomentum-compatible (LP11a, LP11b) [29] two-mode signal spaces. Using classical-level input signals, we have observed high signal-idler mode selectivity for these two individual processes, and demonstrated that, when combined, these two processes couple the input two-mode seed signal to an orthogonal two-mode idler for various signal-mode superpositions [28,30].…”

Section: Progress On Spatially-entangled Photon-pair Generation In Gu...mentioning

confidence: 83%

Devices for quantum communication over mode-division-multiplexing systems

Shamsshooli

Kwon

Guo

et al. 2023

Quantum Computing, Communication, and Simulation III

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In the absence of quantum repeaters, the only way to increase the quantum communication capacity at a given reach is to employ more modes for encoding and transmitting information. While frequency, temporal, and polarization modes have already been exploited for this purpose, the use of many spatial modes over long distances has only recently become possible owing to the development of low-loss few-mode fibers (FMFs).We will discuss the development of two key enablers of quantum communication over FMF spatial modes: 1) spatiallyentangled photon-pair generator and 2) dynamically-reconfigurable spatial-mode de-multiplexer that can perform projective measurements alternating between two sets of mutually unbiased bases in a given spatial mode space. Both devices are based on the spatial-mode-selective quantum frequency conversion process, implemented in either χ (2) (multimode LiNbO3 waveguide) or χ (3) (custom-made FMF) nonlinear medium.

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Section: Progress On Spatially-entangled Photon-pair Generation In Gu...mentioning

confidence: 83%

Devices for quantum communication over mode-division-multiplexing systems

Shamsshooli

Kwon

Guo

et al. 2023

Quantum Computing, Communication, and Simulation III

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show abstract

“…Gener-ating photon pairs in a superposition of multiple fibers modes requires precise analysis of the phase matching conditions that will allow multiple SFWM processes in the same spectral channel [26,27,28,29]. Experimentally, such phase matching conditions were recently studied for parametric amplification of weak signals [30], but not in the spontaneous regime. Hence correlations between pairs of photons generated in multiple fiber modes were not measured to date.…”

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confidence: 99%

All-Fiber Source and Sorter for Multimode Correlated Photons

Sulimany,

Bromberg

2020

Preprint

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Photons occupying multiple spatial modes hold a great promise for implementing high-dimensional quantum communication. We use spontaneous four wave mixing to generate multimode photon pairs in a few mode fiber. We show the photons are correlated in the fiber mode basis using an all-fiber mode sorter. Our demonstration paves the way to realization of high-dimensional quantum protocols based on standard, commercially available, fibers in an all-fiber configuration.High-dimensional quantum bits hold great potential for quantum communication owing to their robustness to a realistic noisy environment [1,2]. Implementations based on encoding information in the transverse spatial modes of photons are especially promising due to the large Hilbert space they span [3,4]. In recent years, such implementations were successfully demonstrated in freespace [5,6]. Meanwhile, efforts for multimode fiber-based technologies are expected to achieve high-dimensional quantum communication without line of sight, based on the existing multimode fiber component and infrastructures [7,

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All-fiber source and sorter for multimode correlated photons

Sulimany

Bromberg

2022

npj Quantum Inf

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Photons occupying multiple spatial modes hold a great promise for implementing high-dimensional quantum communication. We use spontaneous four-wave mixing to generate multimode photon pairs in a few-mode fiber. We show the photons are correlated in the fiber mode basis using an all-fiber mode sorter. Our demonstration offers an essential building block for realizing high-dimensional quantum protocols based on standard, commercially available fibers, in an all-fiber configuration.

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Toward Generation of Spatially-Entangled Photon Pairs in a Few-Mode Fiber

Abstract: We describe a novel scheme for spatial-mode-entangled photon-pair generation in a few-mode fiber. We experimentally verify the underlying inter-modal parametric processes with two-mode classical signal input and demonstrate high mode purity of the generated idler.

Cited by 3 publications

References 6 publications

Devices for quantum communication over mode-division-multiplexing systems

Devices for quantum communication over mode-division-multiplexing systems

All-Fiber Source and Sorter for Multimode Correlated Photons

All-fiber source and sorter for multimode correlated photons

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