Remotely sensing an object’s rotational orientation using the orbital angular momentum of light (Invited Paper)

Milione, Giovanni; Wang, Ting; Han, Jing; Bai, Lianfa

doi:10.3788/col201715.030012

Cited by 27 publications

(2 citation statements)

References 38 publications

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“…Recently, spatially structured beams of light have been used extensively for multiple applications, such as 3D surface imaging, quantum cryptography, remote sensing, and correlated imaging [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. Among them, the Laguerre–Gauss (LG) modes are particularly important, as they possess orbital angular momentum (OAM) [ 22 , 23 ] and allow the construction of OAM modes of light.…”

Section: Introductionmentioning

confidence: 99%

Experimental Guesswork with Quantum Side Information Using Twisted Light

Katariya

Bhusal

You

2023

Sensors

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Guesswork is an information–theoretic quantity which can be seen as an alternate security criterion to entropy. Recent work has established the theoretical framework for guesswork in the presence of quantum side information, which we extend both theoretically and experimentally. We consider guesswork when the side information consists of the BB84 states and their higher-dimensional generalizations. With this side information, we compute the guesswork for two different scenarios for each dimension. We then performed a proof-of-principle experiment using Laguerre–Gauss modes to experimentally compute the guesswork for higher-dimensional generalizations of the BB84 states. We find that our experimental results agree closely with our theoretical predictions. This work shows that guesswork can be a viable security criterion in cryptographic tasks and is experimentally accessible in a number of optical setups.

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Section: Introductionmentioning

confidence: 99%

Experimental Guesswork with Quantum Side Information Using Twisted Light

Katariya

Bhusal

You

2023

Sensors

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“…The recent interest in optical vortex light is due to the large number of potential, and realised, applications. For example: detecting the rotary or lateral motion of particles in the beam cross-section [19][20][21], the masking of parent stars with an OV coronograph to allow direct imaging of companion objects [22,23], or imposing one form of optical torque on a nano-or micro-scale particle [24]. The interest in the information content of OV photons stems from the assumption that, since |l forms a countably infinite set of basis states, the number of bits encoded in a photon is only bounded by experimental effects.…”

Section: Introductionmentioning

confidence: 99%

An upper bound on the rate of information transfer in optical vortex beams

Coles¹

2018

Laser Phys. Lett.

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Light endowed with orbital angular momentum, commonly termed optical vortex light, has an azimuthal phase indexed by the orbital quantum number l. In contrast to the two basis states of the optical spin angular momentum, the interest in the information content of optical vortex beams is centred on the assumption that |l forms a countably infinite set of basis states. The recent experimental observation that group velocity is inversely proportional to l provides a theoretical basis for a practical measure of information transfer. This Letter sets an upper bound on that measure.

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Spatial Mode Correction of Single Photons Using Machine Learning

et al. 2021

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Spatial modes of light constitute valuable resources for a variety of quantum technologies ranging from quantum communication and quantum imaging to remote sensing. Nevertheless, their vulnerabilities to phase distortions, induced by random media, impose significant limitations on the realistic implementation of numerous quantum‐photonic technologies. Unfortunately, this problem is exacerbated at the single‐photon level. Over the last two decades, this challenging problem has been tackled through conventional schemes that utilize optical nonlinearities, quantum correlations, and adaptive optics. In this article, the self‐learning and self‐evolving features of artificial neural networks are exploited to correct the complex spatial profile of distorted Laguerre–Gaussian modes at the single‐photon level. Furthermore, the potential of this technique is used to improve the channel capacity of an optical communication protocol that relies on structured single photons. The results have important implications for real‐time turbulence correction of structured photons and single‐photon images.

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Remotely sensing an object’s rotational orientation using the orbital angular momentum of light (Invited Paper)

Cited by 27 publications

References 38 publications

Experimental Guesswork with Quantum Side Information Using Twisted Light

Experimental Guesswork with Quantum Side Information Using Twisted Light

An upper bound on the rate of information transfer in optical vortex beams

Spatial Mode Correction of Single Photons Using Machine Learning

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