Excitonic Coupling and Photon Antibunching in Venus Yellow Fluorescent Protein Dimers: A Lindblad Master Equation Approach

• URL: http://arxiv.org/abs/2508.14233v5
• Date: Wed, 05 Nov 2025 09:58:35 GMT
• Title: Excitonic Coupling and Photon Antibunching in Venus Yellow Fluorescent Protein Dimers: A Lindblad Master Equation Approach
• Abstract summary: Strong excitonic coupling and photon antibunching (AB) have been observed together in Venus yellow fluorescent protein dimers.<n>To investigate the implications of this coexistence, Venus yellow fluorescent protein (YFP) dimer population dynamics are modeled within a Lindblad master equation framework.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Strong excitonic coupling and photon antibunching (AB) have been observed together in Venus yellow fluorescent protein dimers and currently lack a cohesive theoretical explanation. In 2019, Kim et al. demonstrated Davydov splitting in circular dichroism spectra, revealing strong J-like coupling, while antibunched fluorescence emission was confirmed by combined antibunching--fluorescence correlation spectroscopy (AB/FCS fingerprinting). To investigate the implications of this coexistence, Venus yellow fluorescent protein (YFP) dimer population dynamics are modeled within a Lindblad master equation framework, testing its ability to cope with typical, data-informed, Venus YFP dimer time and energy values. Simulations predict multiple-femtosecond (fs) decoherence, yielding bright/dark state mixtures consistent with antibunched fluorescence emission at room temperature. Thus, excitonic coupling and photon AB in Venus YFP dimers are reconciled without invoking long-lived quantum coherence. However, clear violations of several Lindblad approximation validity conditions appear imminent, calling for careful modifications to choices of standard system and bath definitions and parameter values.

Related papers

• Non-Equilibrium Dynamics of the Time-Dependent Excitonic Coupling in Fluorescent Protein Dimers [1.4449464910072918]
  We quantify the excitonic coupling in the homodimer of dimeric Venus fluorescent protein using a quantum-classical hybrid workflow.<n>This disparity highlights the critical role of near-field multipolar effects at the 27.6 chromophore centroid separation.
  arXiv  Detail & Related papers  (2026-04-22T14:54:26Z)
• Investigating Spectral Dynamics and Spin Signatures of a Mechanically Isolated Quantum Emitter in hBN [70.39382957795658]
  Mechanically isolated defect centers in hexagonal boron nitride are promising coherent quantum emitters.<n>We investigate a single mechanically isolated quantum emitter in hBN integrated onto a coplanar waveguide.
  arXiv  Detail & Related papers  (2026-04-16T13:24:11Z)
• Multi-Photon Quantum Rabi Models with Center-of-Mass Motion [45.73541813564926]
  We introduce a rigorous, second-quantized framework for describing multi-$Lambda$-atoms in a cavity.<n>A key feature of our approach is the systematic application of a Hamiltonian averaging theory to the atomic field operators.<n>A significant finding is the emergence of a particle-particle interaction mediated by ancillary states.
  arXiv  Detail & Related papers  (2025-07-07T09:50:48Z)
• Asymmetric Biphoton Generation under Ground-State Decoherence and Phase Mismatch in a Cold Atomic Ensemble [0.0]
  We investigate how ground-state decoherence and phase mismatch influence biphoton generation in spontaneous four-wave mixing.<n>Our results reveal significant asymmetry in the Stokes and anti-Stokes photon generation rates.<n>Although ground-state decoherence reduces the generation of temporally correlated photons, it paradoxically enhances biphoton purity.
  arXiv  Detail & Related papers  (2025-05-10T13:57:57Z)
• Emergent Kitaev materials in synthetic Fermi-Hubbard bilayers [49.1574468325115]
  Bond-directional spin-spin interactions in a Fermi-Hubbard bilayer can be realized with ultracold fermions in Raman optical lattices.<n>We analyze the Fermi-liquid and Mott-insulating phases, highlighting a correspondence between Dirac and Majorana quasi-particles.<n>Our results establish that cold-atom quantum simulators based on Raman optical lattices can be a playground for extended Kitaev models.
  arXiv  Detail & Related papers  (2025-04-22T10:07:56Z)
• Bi-self-trapping of excitons via the long-living phonon mode and their superfluorescent markers [0.0]
  We offer the two-step mechanism: formation of two self-trapped excitons entangled via the same long-living phonon mode, and their rearrangement into a superradiating mirror symmetric configuration.<n>Results indicate that the self-trapped excitons are described by the stable phase-locked steady-state solution of the equations of motion.<n>The bi-self-trapped exciton in the mirror-symmetric configuration can be described by the Dicke Hamiltonian and is responsible for superfluorescence.
  arXiv  Detail & Related papers  (2025-01-28T11:56:03Z)
• Photon correlation time-asymmetry and dynamical coherence in multichromophoric systems [44.99833362998488]
  We show that time-asymmetries in the cross-correlations of photons corresponding to different polarizations can be exploited to probe quantum coherent transport mechanisms and steady-state coherence properties. Our results put forward photon correlation asymmetry as a promising approach to investigate coherent contributions to excited-stated dynamics in molecular aggregates and other many-site quantum emitters.
  arXiv  Detail & Related papers  (2024-04-24T21:06:01Z)
• Engineering the impact of phonon dephasing on the coherence of a WSe$_{2}$ single-photon source via cavity quantum electrodynamics [36.88715167286119]
  Emitter dephasing is one of the key issues in the performance of solid-state single photon sources. We show that it is possible to tune and engineer the coherence of photons emitted from a single WSe$$ monolayer dot via selectively coupling it to a spectral cavity resonance.
  arXiv  Detail & Related papers  (2023-07-13T16:41:06Z)
• Correlated steady states and Raman lasing in continuously pumped and probed atomic ensembles [68.8204255655161]
  We consider an ensemble of Alkali atoms that are continuously optically pumped and probed. Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state. We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
  arXiv  Detail & Related papers  (2022-05-10T06:54:54Z)
• Dynamics of photosynthetic light harvesting systems interacting with N-photon Fock states [0.0]
  We develop a method to simulate the excitonic dynamics of realistic photosynthetic light harvesting systems under excitation by N-photon Fock state pulses. We derive expressions for the probability to absorb a single Fock state photon, with or without the influence of phonons.
  arXiv  Detail & Related papers  (2021-11-13T00:03:53Z)
• Observation of nonclassical correlations in biphotons generated from an ensemble of pure two-level atoms [0.0]
  We report the experimental verification of nonclassical correlations for a four-wave-mixing process in an ensemble of cold two-level atoms. Quantum correlations are observed in a nano-seconds timescale, in the interference between the central exciting frequency and sidebands dislocated by the detuning to the atomic resonance.
  arXiv  Detail & Related papers  (2021-08-11T18:51:02Z)
• Exciton-photon complexes and dynamics in the concurrent strong-weak coupling regime of singular site-controlled cavity quantum electrodynamics [13.810406780342314]
  We investigate the exciton complexes photoluminescence, dynamics and photon statistics in the concurrent strong weak coupling regime. We demonstrate the strong and weak coupling can coexist dynamically, as a form of intermediate regime mediated by phonon scattering. This study suggests our device has potential for new and subtle cavity quantum electrodynamical phenomena, cavity enhanced indistinguishable single photon generation, and cluster state generation via the exciton-photon complexes for quantum networks.
  arXiv  Detail & Related papers  (2021-07-14T07:21:57Z)
• Analysis of photon characteristics in anticorrelation of a Hong-Ou-Mandel dip for on-demand quantum correlation control [0.0]
  The Hong-Ou-Mandel (HOM) dip is the most important test tool for direct proof of entanglement between paired photons. This study sheds light on deterministic quantum correlation control and opens the door to potential applications of on-demand quantum information science.
  arXiv  Detail & Related papers  (2021-05-25T05:00:49Z)
• Observation-dependent suppression and enhancement of two-photon coincidences by tailored losses [68.8204255655161]
  Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter. In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement. Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
  arXiv  Detail & Related papers  (2021-05-12T06:47:35Z)
• Auto-heterodyne characterization of narrow-band photon pairs [68.8204255655161]
  We describe a technique to measure photon pair joint spectra by detecting the time-correlation beat note when non-degenerate photon pairs interfere at a beamsplitter. The technique is well suited to characterize pairs of photons, each of which can interact with a single atomic species.
  arXiv  Detail & Related papers  (2021-01-08T18:21:30Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)
• Parity-Symmetry-Protected Bundle Emission [11.798151369038557]
  We demonstrate symmetry protected bundle emission in the cavity QED system under the ultrastrong coupling regime. This work extends multi-photon bundle emission to the ultrastrong coupling regime, and offers the prospect of exploring symmetry-protected multi-quanta physics.
  arXiv  Detail & Related papers  (2020-12-20T13:42:41Z)
• Quantum Borrmann effect for dissipation-immune photon-photon correlations [137.6408511310322]
  We study theoretically the second-order correlation function $g(2)(t)$ for photons transmitted through a periodic Bragg-spaced array of superconducting qubits, coupled to a waveguide. We demonstrate that photon bunching and anti-bunching persist much longer than both radiative and non-radiative lifetimes of a single qubit.
  arXiv  Detail & Related papers  (2020-09-29T14:37:04Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.