Quantum pathways for resonance energy transfer

Jenkins, Robert D.; Daniels, Gareth J.; Andrews, Davıd L.

doi:10.1063/1.1742697

Cited by 37 publications

(36 citation statements)

References 23 publications

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“…[The latter assertion has been explicitly proven for the case of resonance energy transfer (RET) -see ref 27 and the V tensor that appears in that connection is of precisely the same form as arises here.] The apparent paradox is resolved on recall of the time-energy uncertainty principle, and the ultrafast timescale associated with virtual photon propagation over nanoscale distances.…”

Section: Limitations Of the Classical Interpretationmentioning

confidence: 71%

Optomechanical forces and electrostriction in laser optical materials

Andrews

Crisp

2006

SPIE Proceedings

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With optical tweezer methods now firmly established and the nature of optical forces on individual particles well understood, one of the separate but related issues that has only recently come to the fore concerns the effects of intense optical radiation on inter-particle forces. It has already been established that such forces, which are not dependent on optical field gradients, can effect a weak binding between particles leading in some cases to optical clustering and in others to pattern formation. In this presentation it is shown by quantum electrodynamical analysis that a variety of other optomechanical effects can be produced in materials or systems subjected to the throughput of intense, non-resonant laser radiation. In particular, an optical electrostriction phenomenon is identified and shown to be widely operative in laser optical materials. Although a classical electrodynamical interpretation (in terms of interactions between induced dipoles) comfortably predicts the sign of the resulting mechanical force, it is shown that such a picture has significant limitations in addressing this fundamentally photonic phenomenon. The key parameters that determine the size and character of optical electrostriction are delineated and its significance is quantitatively assessed. The experimental challenges involved in characterizing such phenomena are also given a detailed appraisal.

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Section: Limitations Of the Classical Interpretationmentioning

confidence: 71%

Optomechanical forces and electrostriction in laser optical materials

Andrews

Crisp

2006

SPIE Proceedings

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“…Its retarded characteristic applies over all distances, accommodating readily identifiable short-range (near-field, 1 kR  ) and long-range (wave-zone, 1 kR  ) asymptotes. The former behavior is identified with virtual photon coupling (resonance energy transfer) -the latter, real photon propagation (radiative transfer) [11]. Thus, as the detector is moved outwards, away from the near-field, a progressively radiative character to the energy transfer emerges.…”

Section: ( )mentioning

confidence: 99%

“…This, however, is an interpretation whose extension to higher multipoles has a potential pitfall. For example, it is not widely understood that electric quadrupole decay produces radiation that is detectable not only by quadrupole detectors, but also by a dipole detector -yet a clearly non zero result [9,[11][12][13] emerges for the latter case of E2-E1 coupling. This and other processes are both fully allowed and addressed by the general QED theory; in all cases the source-detector coupling is achieved by regular spin-1 photon [14].…”

Section: ( )mentioning

confidence: 99%

Configuring the cancellation of optical near-fields

2008

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The characteristic near-field behavior of electromagnetic fields is open to a variety of interpretations. In a classical sense the term 'near-field' can be taken to signify a region, sufficiently close to some primary or secondary source, that the onset of retardation features is insignificant; a quantum theoretic explanation might focus more on the large momentum uncertainty that operates at small distances. Together, both near-field and wave-zone (radiative) features are fully accommodated in a retarded resonance propagation tensor, within which each component individually represents one asymptotic limit -alongside a third term that is distinctly operative at distances comparable to the optical wavelength. The propagation tensor takes different forms according to the level of multipole involved in the signal production and detection. In this presentation the nature and symmetry properties of the retarded propagation tensor are explored with reference to various forms of electric interaction, and it is shown how a suitable arrangement of optical beams can lead to the complete cancellation of near-fields. The conditions for such behavior are fully determined and some important optical trapping applications are discussed.

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“…This radiative term manifests the long-range emergence of the coupling photon into a real character. Revisiting the underlying QED theory in order to disentangle the quantum pathways, recent work 34 has also shown that this long-range behaviour is completely identifiable with the physically more intuitive sense of propagation for the virtual photon-case (a) in Fig. 14.3, or the lower pathway in Fig.…”

Section: Features Of the Pair Transfer Ratementioning

confidence: 99%

Resonance Energy Transfer: Theoretical Foundations and Developing Applications

Andrews¹

Tutorials in Complex Photonic Media

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Quantum pathways for resonance energy transfer

Cited by 37 publications

References 23 publications

Optomechanical forces and electrostriction in laser optical materials

Optomechanical forces and electrostriction in laser optical materials

Configuring the cancellation of optical near-fields

Resonance Energy Transfer: Theoretical Foundations and Developing Applications

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