68 citations · 274 across the 26 of their papers we have counts for
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The onset time of Fermi's golden rule
V. Debierre, E. Lassalle
Fermi's golden rule describes the decay dynamics of unstable quantum systems coupled to a reservoir, and predicts a linear decay in time. Although it arises at relatively short tim…
Non-classical properties of the e.m. near field of an atom in spontaneous light emission
Vincent Debierre, Brian Stout, Thomas Durt
We use Glauber's correlation function as well as the Green functions formalism to investigate, in the case of a dipolar atomic transition, the causal behaviour of the spontaneously…
Conditions for anti-Zeno effect observation in free-space atomic radiative decay
Emmanuel Lassalle, Caroline Champenois, Brian Stout +2
Frequent measurements can modify the decay of an unstable quantum state with respect to the free dynamics given by Fermi's golden rule. In a landmark article, Nature 405, 546 (2000…
Photon position eigenvectors, Wigner's little group and Berry's phase
Margaret Hawton, Vincent Debierre
We show that the cylindrical symmetry of the eigenvectors of the photon position operator with commuting components, x, reflects the E(2) symmetry of the photon little group. The e…
Resonance fluorescence in the resolvent operator formalism
V. Debierre, Z. Harman
The Mollow spectrum for the light scattered by a driven two-level atom is derived in the resolvent operator formalism. The derivation is based on the construction of a master equat…
Long-Range Tails in van der Waals Interactions of Excited-State and Ground-State Atoms
U. D. Jentschura, V. Debierre
A quantum electrodynamic calculation of the interaction of an excited-state atom with a ground-state atom is performed. For an excited reference state and a lower-lying virtual sta…
Virtual Resonant Emission and Oscillatory Long-Range Tails in van der Waals Interactions of Excited States: QED Treatment and Applications
U. D. Jentschura, C. M. Adhikari, V. Debierre
We report on a quantum electrodynamic (QED) investigation of the interaction between a ground state atom with another atom in an excited state. General expressions, applicable to a…
Adjacency Graphs and Long-Range Interactions of Atoms in Quasi-Degenerate States: Applied Graph Theory
C. M. Adhikari, V. Debierre, U. D. Jentschura
We analyze, in general terms, the evolution of energy levels in quantum mechanics, as a function of a coupling parameter, and demonstrate the possibility of level crossings in syst…
Maxwell meets Reeh-Schlieder: the quantum mechanics of neutral bosons
Margaret Hawton, Vincent Debierre
We find that biorthogonal quantum mechanics with a scalar product that counts both absorbed and emitted particles leads to covariant position operators with localized eigenvectors.…
Photon position observable
Margaret Hawton, Vincent Debierre
In biorthogonal quantum mechanics, the eigenvectors of a quasi-Hermitian operator and those of its adjoint are biorthogonal and complete and the probability for a transition from a…
Mid- and far-field deviations from causality in spontaneous light emission by atomic Hydrogen
Vincent Debierre, Thomas Durt
We investigate, in the case of the transition in atomic Hydrogen, the behaviour of the spontaneously emitted electromagnetic field in spacetime. We focus…
Spontaneous light emission by atomic Hydrogen: Fermi's golden rule without cheating
V. Debierre, T. Durt, A. Nicolet +1
Focusing on the transition in atomic Hydrogen, we investigate through first order perturbation theory the time evolution of the survival probability of an…
Fermi golden rule beyond the Zeno regime
Vincent Debierre, Isabelle Goessens, Édouard Brainis +1
We reconsider the problem of the spontaneous emission of light by an excited atomic state. We scrutinize the survival probability of this excited state for very short times, in the…
Absorption in quantum electrodynamics cavities in terms of a quantum jump operator
V. Debierre, G. Demésy, T. Durt +3
We describe the absorption by the walls of a quantum electrodynamics cavity as a process during which the elementary excitations (photons) of an internal mode of the cavity exit by…
Coherent states and the classical-quantum limit considered from the point of view of entanglement
Thomas Durt, Vincent Debierre
Three paradigms commonly used in classical, pre-quantum physics to describe particles (that is: the material point, the test-particle and the diluted particle (droplet model)) can…