Enhancement of Stokes–anti-Stokes correlations by the classical incoherent incident light

Shishkov, V. Yu.; Andrianov, E. S.; Pukhov, A.; Виноградов, А. П.

doi:10.1103/physreva.103.013514

Cited by 4 publications

(11 citation statements)

References 64 publications

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“…St(m 1 )aSt(m 2 ) (τ ). We do this by using the microscopic description of the dynamics of molecules under the influence of an external field, following [31]. Consider M identical molecules that do not interact with each other, illuminated by an external light.…”

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

“…Consider M identical molecules that do not interact with each other, illuminated by an external light. The energy of the jth molecule is the sum of the energy of the electronic subsystem of the molecule, Ĥelj , the energy of the vibrational subsystem of the molecule, Ĥvibj , the energy of interaction of the electronic and vibrational subsystems of the molecule, Ĥintj , and the energy of interaction of the external electromagnetic field and the electronic subsystem of the molecule, Ĥexj [31,43,44]. Thus, the total energy of the molecules interacting with the external field is…”

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

“…Since the average dipole moment of the jth molecule is determined by d eg σj (t) , then the operator σj (t) is the dimensionless operator of the dipole moment of the jth molecule. The Heisenberg-Langevin equations for the system (9) allow us to find an approximate expression for σj (t) in the Heisenberg representation [31] σj (t) ≈ σRj (t) + σStj (t) + σaStj (t).…”

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

“…The operator σRj (t) is responsible for Rayleigh scattering, and the operators σStj (t) and σaStj (t) are responsible for Stokes and anti-Stokes scattering, respectively. For the jth molecule, these operators are [31]…”

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

“…For this system, ω qm /2π is equal to 44 THz, which made it possible to realize a single-photon source at room temperature. Recently, experimental [28,29,30] and theoretical [31,32,33,34,35,36] works have indicated that Stokes and anti-Stokes scattered light on molecular vibrations have strong mutual correlations. This makes it possible to consider such systems as the basis for heralded single-photon light sources.…”

Section: Introductionmentioning

confidence: 99%

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Heralded single-photon source based on ensemble of Raman active molecules

Panyukov,

Shishkov,

Andrianov

2022

Preprint

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Light with high mutual correlations at different frequencies can be used to create heralded single-photon sources, which may serve as the basic elements of existing quantum cryptography and quantum teleportation schemes. One of the important examples in natural systems of light with high mutual correlations is the light produced by spontaneous Raman scattering on an ensemble of molecules. In this paper, we investigate the possibility of using Raman light to create a heralded single-photon source. We show that when using Stokes scattered light for postselection of an anti-Stokes scattered light, the latter may posses the single-photon properties. We analyze the influence of the various negative factors on the characteristics of such a heralded single-photon source, which include a time delay between Stokes and anti-Stokes photons, the finiteness of the correlation radius of an external source, and background radiation. We show that the high purity of the single-photon source is preserved even when the flow of uncorrelated photons exceeds the flow of correlated photons in the scattered Raman light by an order of magnitude.

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Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

Section: Correlation Properties Of Raman Lightmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Heralded single-photon source based on ensemble of Raman active molecules

Panyukov,

Shishkov,

Andrianov

2022

Preprint

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Tip-Enhanced Stokes–Anti-Stokes Scattering from Carbyne

et al. 2022

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Carbyne, a linear chain of carbon atoms, is the truly one-dimensional allotrope of carbon and the strongest known Raman scatterer. Here, we use tip-enhanced Raman scattering (TERS) to further enhance the Raman response of a single carbyne chain confined inside a double-walled carbon nanotube. We observe an increase of the anti-Stokes scattering by a factor of 3290 and a 22-fold enhancement of the anti-Stokes/Stokes ratio relative to far-field measurements. The power dependence of the anti-Stokes/Stokes ratio under TERS conditions is indicative of coherent Stokes–anti-Stokes scattering mediated by an excited phonon. The role of resonance effects and laser-induced heating are discussed and potential opportunities are outlined.

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Heralded single-photon source based on an ensemble of Raman-active molecules

Panyukov¹,

Shishkov²,

Andrianov³

2022

J. Opt. Soc. Am. B

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Light with high mutual correlations at different frequencies can be used to create heralded single-photon sources, which may serve as the basic elements of existing quantum cryptography and quantum teleportation schemes. One of the important examples in natural systems of light with high mutual correlations is the light produced by spontaneous Raman scattering on an ensemble of molecules. In this paper, we investigate the possibility of using Raman light to create a heralded single-photon source. We show that when using Stokes scattered light for postselection of anti-Stokes scattered light, the latter may possess single-photon properties. We analyze the influence of various negative factors on the characteristics of such a heralded single-photon source, which include a time delay between Stokes and anti-Stokes photons, the finiteness of the correlation radius of an external source, and background radiation. We show that the low value of the second-order autocorrelation function of the single-photon source is preserved even when the flow of uncorrelated photons exceeds the flow of correlated photons in scattered Raman light by an order of magnitude.

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Enhancement of Stokes–anti-Stokes correlations by the classical incoherent incident light

Cited by 4 publications

References 64 publications

Heralded single-photon source based on ensemble of Raman active molecules

Heralded single-photon source based on ensemble of Raman active molecules

Tip-Enhanced Stokes–Anti-Stokes Scattering from Carbyne

Heralded single-photon source based on an ensemble of Raman-active molecules

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