No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Quantum dynamics of incoherently driven V-type systems: Analytic solutions beyond the secular approximation
R. E. Blankenship, Molecular Mechanisms of Photosynthesis (Blackwell Science, Oxford, 2002).
P. Würfel, Physics of Solar Cells: From Principles to New Concepts (Wiley-VCH, Weinheim, 2005).
G. S. Engel, T. R. Calhoun, E. L. Read, T. K. Ahn, T. Mancal, Y. C. Cheng, R. E. Blankenship, and G. R. Fleming, Nature (London) 446, 782 (2007).
V. Tiwari, W. K. Peters, and D. M. Jonas, Proc. Natl. Acad. Sci. U. S. A. 110, 1203 (2013);
L. Mandel and E. Wolf, Optical Coherence and Quantum Optics (Cambridge University Press, Cambridge, UK, 1995), Chap. 13.
C. Cohen-Tannoudji, J. Dupont-Roc, and G. Grynberg, Atom-Photon Interactions: Basic Process and Applications (Wiley-VCH, Weinheim, 2004).
R. Loudon, The Quantum Theory of Light, 3rd ed. (Oxford University Press, Oxford, 2000).
G. S. Agarwal, Quantum Statistical Theories of Spontaneous Emission and their Relation to Other Approaches (Springer-Verlag, Berlin, 1974).
M. O. Scully and M. S. Zubairy, Quantum Optics (Cambridge University Press, Cambridge, UK, 1997).
A. Dodin, T. V. Tscherbul, and P. Brumer, “Coherent dynamics of V-type systems driven by time dependent incoherent radiation” (unpublished).
Note that while Fig. 3 of Ref. 40 shows the absolute magnitude of the coherence vs. time, the time evolution is not discussed in that paper, which focuses on the coherences in the long-time limit.
W. E. Boyce and R. C. DiPrima, Elementary Differential Equations, 9th ed. (Wiley, NY, 2008).
D. Morin, Introduction to Classical Mechanics (Cambridge University Press, UK, 2008).
Article metrics loading...
Closed-form analytic solutions to non-secular Bloch-Redfield master equations for quantum dynamics of a V-type system driven by weak coupling to a thermal bath, relevant to light harvesting processes, are obtained and discussed. We focus on noise-induced Fano coherences among the excited states induced by incoherent driving of the V-system initially in the ground state. For suddenly turned-on incoherent driving, the time evolution of the coherences is determined by the damping parameter , where γi are the radiative decay rates of the excited levels i = 1, 2, and depends on the excited-state level splitting Δ > 0 and the angle between the transition dipole moments in the energy basis. The coherences oscillate as a function of time in the underdamped limit (ζ ≫ 1), approach a long-lived quasi-steady state in the overdamped limit (ζ ≪ 1), and display an intermediate behavior at critical damping (ζ = 1). The sudden incoherent turn-on is shown to generate a mixture of excited eigenstates |e
1〉 and |e
2〉 and their in-phase coherent superposition
, which is remarkably long-lived in the overdamped limit (where r
1 and r
2 are the incoherent pumping rates). Formation of this coherent superposition enhances the decay rate from the excited states to the ground state. In the strongly asymmetric V-system where the coupling strengths between the ground state and the excited states differ significantly, additional asymptotic quasistationary coherences are identified, which arise due to slow equilibration of one of the excited states. Finally, we demonstrate that noise-induced Fano coherences are maximized with respect to populations when r
1 = r
2 and the transition dipole moments are fully aligned.
Full text loading...
Most read this month