701 research outputs found
Lorentz-invariant, retrocausal, and deterministic hidden variables
We review several no-go theorems attributed to Gisin and Hardy, Conway and
Kochen purporting the impossibility of Lorentz-invariant deterministic
hidden-variable model for explaining quantum nonlocality. Those theorems claim
that the only known solution to escape the conclusions is either to accept a
preferred reference frame or to abandon the hidden-variable program altogether.
Here we present a different alternative based on a foliation dependent
framework adapted to deterministic hidden variables. We analyse the impact of
such an approach on Bohmian mechanics and show that retrocausation (that is
future influencing the past) necessarily comes out without time-loop paradox
Description of spontaneous photon emission and local density of states in presence of a lossy polaritonic inhomogenous medium
We provide a description of spontaneous emission in a dispersive and
dissipative linear inhomogeneous medium based on the generalized
Huttner-Barnett model [Phys. Rev. A 46, 4306 (1992)]. Our discussion considers
on an equal footing both the photonic and material fluctuations which are
necessary to preserve unitarity of the quantum evolution. Within this approach
we justify the results obtained in the past using the Langevin noise method
that neglects the removal of photonic fluctuations. We finally discuss the
concept of local density of states (LDOS) in a lossy and dispersive
inhomogeneous environment that provides a basis for theoretical studies of
fluorescent emitters near plasmonic and polaritonic antennas.Comment: Submitted : comments are welcom
Should the wave-function be a part of the quantum ontological state?
We analyze the recent no go theorem by Pusey, Barrett and Rudolph (PBR)
concerning ontic and epistemic hidden variables. We define two fundamental
requirements for the validity of the result. We finally compare the models
satisfying the theorem with the historical hidden variable approach proposed by
de Broglie and Bohm.Comment: Progress in Physics, vol 4 (October 2012
A dual-Lagrangian description adapted to quantum optics in dispersive and dissipative dielectric media
We develop a dual description of quantum optics adapted to dielectric systems
without magnetic property. Our formalism, which is shown to be equivalent to
the standard one within some dipolar approximations discussed in the article,
is applied to the description of polaritons in dielectric media. We show that
the dual formalism leads to the Huttner-Barnett equations [B. Huttner, S. M.
Barnett, Phys. Rev. A \textbf{46}, 4306 (1992)] for QED in dielectric systems.
More generally, we discuss the role of electromagnetic duality in the
quantization procedure for optical systems and derive the structure of the
dynamical laws in the various representations
Brownian motion in the pilot wave interpretation of de Broglie and relaxation to quantum equilibrium
The pilot wave interpretation proposed by de Broglie and later by Bohm
contains not only a dynamical ontology but also relies on a statistical
assumption known as quantum equilibrium. In this work which follows our recent
article [1] we develop a Langevin force description of the relaxation process
which leads to quantum equilibrium. Based on a application of the
Caldera-Leggett model for a thermal bath we show how a Brownian motion leads
naturally to quantum relaxation.Comment: to appear in Annales de la Fondation de Broglie (2018
Surface Plasmon Polariton microscope with Parabolic Reflectors
We report the realization of a two--dimensional optical microscope for
surface plasmons polaritons (SPPs) based on parabolic Bragg mirrors. These
mirrors are built from lithographically fabricated gold nanostructures on gold
thin films. We show by direct imaging by leakage radiation microscopy that the
magnification power of the SPP microscope follows basic predictions of
geometrical optics. Spatial resolution down to the value set by the diffraction
limit is demonstrated.Comment: Opt.Lett.32, 2414 (2007
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