Third-order frequency-resolved photon correlations in resonance fluorescence

Nieves, Yamil; Müller, Andreas

doi:10.1103/physrevb.98.165432

Cited by 12 publications

(4 citation statements)

References 39 publications

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“…However, turning to more sophisticated models of the laser, e.g., the one-atom laser [48], one then reaches a thermalization in the limit → 0. The widely used approximation of the laser as a δ function has nevertheless been shown to be good to account for experimental observations several times and under different conditions: 023724-12 mapping the two-and three-photon correlation landscape of the 2LS [95,96] (in agreement with the theoretical predictions [91,97]) and recently by measuring the effect of the filter [46] in perturbing the balance between the quantum emission and the laser itself in a self-homodyning picture [98]. In this case, when the linewidth of the filtering is not vanishing but still remains below the natural linewidth of the 2LS, the correlations become bunched as the intensity of the driving increases.…”

Section: B Coherent Excitationmentioning

confidence: 99%

Loss of antibunching

et al. 2022

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We describe some of the main external mechanisms that lead to a loss of antibunching, i.e., that spoil the character of a given quantum light to deliver its photons separated from each other. Namely, we consider contamination by noise, a time jitter in the photon detection, and the effect of frequency filtering (or detection with finite bandwidth). The formalism to describe time jitter is derived and connected to the already existing one for frequency filtering. The emission from a two-level system under both incoherent and coherent driving is taken as a particular case of special interest. The coherent case is further separated into its vanishing-(Heitler) and high-(Mollow) driving regimes. We provide analytical solutions which, in the case of filtering, reveal an unsuspected structure in the transitions from perfect antibunching to thermal (incoherent case) or uncorrelated (coherent case) emission. The experimental observations of these basic and fundamental transitions would provide additional compelling evidence of the correctness and importance of the theory of frequency-resolved photon correlations.

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Section: B Coherent Excitationmentioning

confidence: 99%

Loss of antibunching

et al. 2022

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“…Cross-correlation measurements between the Rayleigh peak and either side peak exhibit antibunching [40] whilst a cross correlation between side peaks exhibits bunching [g ð2Þ ð0Þ > 1] [37,38]. In addition, filtering halfway between the central and side peaks has revealed the existence of weak "leapfrog" two-photon transitions that exhibit strong bunching [41,42]. The aforementioned studies were performed with broad filtering (Γ > γ), aside from Ref.…”

Section: Takedownmentioning

confidence: 99%

Photon Statistics of Filtered Resonance Fluorescence

et al. 2020

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Spectral filtering of resonance fluorescence is widely employed to improve single photon purity and indistinguishability by removing unwanted backgrounds. For filter bandwidths approaching the emitter linewidth, complex behavior is predicted due to preferential transmission of components with differing photon statistics. We probe this regime using a Purcell-enhanced quantum dot in both weak and strong excitation limits, finding excellent agreement with an extended sensor theory model. By changing only the filter width, the photon statistics can be transformed between antibunched, bunched, or Poissonian. Our results verify that strong antibunching and a subnatural linewidth cannot simultaneously be observed, providing new insight into the nature of coherent scattering.

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“…[57], the method of "two-level detectors" was proposed for calculating correlations of filtered light. This method is powerful, [47,49,52,[57][58][59][60][61][62] but applicable only for Lorentzian spectral filters. [57] Therefore, it does not allow giving an unambiguous answer to the question of the relation between the shape of the filter line and the statistical properties of the light transmitted through it.…”

Section: Introductionmentioning

confidence: 99%

Second‐Order Autocorrelation Function of Spectrally Filtered Light From an Incoherently Pumped Two‐Level System

2022

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Light with zero second-order autocorrelation function, g (2) (0), emitted by single-photon source (SPS), for example, two-level system (TLS), is usually considered as being in a Fock state with one photon in a certain electromagnetic mode of free space. However, real SPSs have finite linewidths and excite all modes lying within the linewidth. It is shown that the zero value of g (2) (0) of light emitted by an incoherently pumped TLS is a consequence of the quantum interference of electromagnetic modes lying within the linewidth. Applying the quantum regression theorem for out-of-time-ordered correlation functions, an analytical expression for g (2) (0) is obtained for the light emitted by a TLS and passed through a spectral filter. It is shown that narrowing the spectral width of the band-pass filter inevitably leads to an increase in g (2) (0). g (2) (𝝉) is found and it is demonstrated that certain spectral filters lead to its nonmonotonic time dependence. These results open up the possibility of controlling the statistics of the emitted light using a spectral filter, which can find applications in quantum communication and cryptography.

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Third-order frequency-resolved photon correlations in resonance fluorescence

Cited by 12 publications

References 39 publications

Loss of antibunching

Loss of antibunching

Photon Statistics of Filtered Resonance Fluorescence

Second‐Order Autocorrelation Function of Spectrally Filtered Light From an Incoherently Pumped Two‐Level System

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