Orbital Angular Momentum in Quantum Communication and Information

Franke‐Arnold, Sonja; Jeffers, John

doi:10.1016/b978-0-12-374027-4.00011-6

Cited by 8 publications

(7 citation statements)

References 52 publications

(59 reference statements)

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“…The phase properties of the electromagnetic fields emitted by the arrays in each case map all-optical switching devices -and potentially even an all-optical transistor [54]. Equally, with advances in nanofabrication paving the way for the batch production of tailored nanoemitter arrays, the potential of materials that can directly generate optical vortex light is also becoming enticing, particularly in view of the associated capacity to convey significantly more information per photon [110,111]. In other areas, too, the science is still advancing apace.…”

Section: Multi-emitter Systems: Generators Of Vortex Lightmentioning

confidence: 99%

Reviews in Fluorescence 2015

Geddes¹

2016

Reviews in Fluorescence

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Conventional fluorescence commonly arises when excited molecules relax to their ground electronic state, and most of the surplus energy dissipates in the form of photon emission. The consolidation and full development of theory based on this concept has paved the way for the discovery of several mechanistic variants that can come into play with the involvement of laser input-most notably the phenomenon of multiphoton-induced fluorescence. However, other effects can become apparent when off-resonant laser input is applied during the lifetime of the initial excited state. Examples include a recently identified scheme for laser-controlled fluorescence. Other systems of interest are those in which fluorescence is emitted from a set of two or more coupled nanoemitters. This chapter develops a quantum theoretical outlook to identify and describe these processes, leading to a discussion of potential applications ranging from all-optical switching to the generation of optical vortices.

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Section: Multi-emitter Systems: Generators Of Vortex Lightmentioning

confidence: 99%

Reviews in Fluorescence 2015

Geddes¹

2016

Reviews in Fluorescence

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“…Specifically, when each term is coupled (by tensor index contraction) with the input polarization component e i in equation (8), the associated relevant irreducible representation products are: for ( )…”

Section: Fi R I F S I F T I F I T I S I R F H T T H R S H R R H I M Ementioning

confidence: 99%

“…These and many other such studies have prompted wide-ranging propositions for methods that might deploy individual photons to encode information on beam structure -particularly orbital angular momentum -and these are schemes that promise a variety of new quantum communication and data handling applications. [5][6][7][8] However, it is not yet clear how far it is practicable to operate such concepts at the single-photon level; in most experimental measurements the perceived status of the observed field as comprising individual photons is a retrospective inference; the reported observations are not being made at the singlephoton level. Of course, the experimental difficulties are compounded at low intensity levels -yet in many of the published schemes, operation at precisely this level of data communication is the aim.…”

Section: Introductionmentioning

confidence: 99%

Structured light, transmission, and scattering

Andrews

2011

SPIE Proceedings

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Numerous theoretical and experimental studies have established the principle that beams conveying orbital angular momentum offer a rich scope for information transfer. However, it is not clear how far it is practicable to operate such a concept at the single-photon level -especially when such a beam propagates through a system in which scattering can occur. In cases where scattering leads to photon deflection, it produces losses; however in terms of the retention of information content, there should be more concern over forward scattering. Based on a quantum electrodynamical formulation of theory, this paper aims to frame and resolve the key issues. A quantum amplitude is constructed for the representation of single and multiple scattering events in the propagation an individual photon, from a suitably structured beam. The analysis identifies potential limitations of principle, undermining complete fidelity of quantum information transmission.

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“…A variety of clever schemes have been envisaged for the transmission of quantum information using light endowed with orbital angular momentum [11]. Generally, such approaches focus upon states of the radiation field, rather than the electrodynamics of their interactions with matter.…”

Section: Photon Interactions In Quantum Optical Information Transfermentioning

confidence: 99%

“…It is a little surprising that this principle, which is particularly relevant to low-number states, has seemingly received very little consideration in the literature to date. Certainly, there are numerous other practical issues to consider alongside this fundamental limitation; a very useful survey has recently been provided by Franke-Arnold and Jeffers [11].…”

Section: Introductionmentioning

confidence: 99%

On the nanoscale transmission of quantum angular momentum

Andrews

2010

Metamaterials: Fundamentals and Applications III

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The electromagnetic propagation of angular momentum associated with photon spin has evolved into a subject of much broader remit, following the theoretical and experimental realization of optical beams that can convey quantized orbital angular momentum. The possibility of transmitting such information over nanoscale distances raises numerous issues. For example, it is known that electron spin can be relayed by near-field communication between exciton states in quantum dot assemblies; the question arises, can orbital angular momentum be conveyed in a similar way? There are fundamentally important technicalities surrounding such a prospect, representing potentially serious constraints on the viability of angular momentum transfer between electronically distinct components in structured nanomaterials. To resolve these issues it is necessary to interrogate the detailed form of near-field electromagnetic coupling of the relevant transition multipoles. The emerging results exhibit novel connections between angular momentum content in the nearfield. The analysis leads to a conclusion that there are specific limitations on the nanoscale transmission of quantum angular momentum, with challenging implications for quantum optical data transmission.

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Orbital Angular Momentum in Quantum Communication and Information

Cited by 8 publications

References 52 publications

Reviews in Fluorescence 2015

Reviews in Fluorescence 2015

Structured light, transmission, and scattering

On the nanoscale transmission of quantum angular momentum

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