155 citations · 1.1k across the 71 of their papers we have counts for
30 papers · 1 filter
From hybrid polariton to dipolariton using non-hermitian Hamiltonians to handle particle lifetimes
Aurélia Chenu, Shiue-Yuan Shiau, Ching-Hang Chien +1
We consider photons strongly coupled to the excitonic excitations of a coupled quantum well, in the presence of an electric field. We show how under a field increase, the hybrid po…
Photocreation of a dark electron-hole pair in a quantum dot
Shiue-Yuan Shiau, Benoit Eble, Valia Voliotis +1
Photon absorption in a semiconductor produces bright excitons that recombine very fast into photons. We here show that in a quantum dot set close to a p-doped reservoir, this absor…
Spin-orbit coupling: atom versus semiconductor crystal
Monique Combescot, Shiue-Yuan Shiau, Valia Voliotis
We reconsider a key point in semiconductor physics, the splitting of the valence band states induced by the spin-orbit interaction, through a novel approach which uses neither the…
Cross-over from trion-hole to exciton-polaron in n-doped semiconductor quantum wells
Yia-Chung Chang, Shiue-Yuan Shiau, Monique Combescot
We present a theoretical study of photo-absorption in n-doped two-dimensional (2D) and quasi-2D semiconductors that takes into account the interaction of the photocreated exciton w…
"Commutator formalism" for pairs correlated through Schmidt decomposition as used in Quantum Information
Monique Combescot
To easily calculate statistical properties of pairs correlated through Schmidt decomposition, as commonly used in Quantum Information, we propose a "commutator formalism" for these…
Fundamental collapse of the exciton-exciton effective scattering
Laura Pilozzi, Monique Combescot, Odile Betbeder-Matibet +1
The exciton-exciton effective scattering which rules the time evolution of two excitons is studied as a function of initial momentum difference, scattering angle and electron-to-ho…
Biexciton oscillator strength
M. Combescot, O. Betbeder-Matibet
Our goal is to provide a physical understanding of the elementary coupling between photon and biexciton and to derive the physical characteristics of the biexciton oscillator stren…
Shiva and Kali diagrams for composite quantum particle many-body effects
M. Combescot, O. Betbeder-Matibet
For half a century, Feynman diagrams have provided an enlightening way of representing many-body effects between elementary fermions and bosons. They however are quite inappropriat…
Ground state energy of N Frenkel excitons
W. V. Pogosov, M. Combescot
By using the composite many-body theory for Frenkel excitons we have recently developed, we here derive the ground state energy of Frenkel excitons in the Born approximation th…
Third order susceptibility: general formalism for photoinduced current density in semiconductors
M. Combescot, O. Betbeder-Matibet
This paper contains a detailed derivation of the photoinduced current density at third order in the coupling between a semiconductor and a multifrequency photon field, starting fro…
Exciton many-body effects through infinite series of composite-exciton operators
M. Combescot, O. Betbeder-Matibet
We revisit the approach proposed by Mukamel and coworkers to describe interacting excitons through infinite series of composite-boson operators for both, the system Hamiltonian and…
Effect of fermionic components on trion-electron scattering
M. Combescot, O. Betbeder-Matibet, M. A. Dupertuis
To test the validity of replacing a composite fermion by an elementary fermion, we here calculate the transition rate from a state made of one free electron and one trion to a simi…
Closure relations for composite bosons: difference between polaritons and Wannier or Frenkel excitons
M. Combescot, M. A. Dupertuis
We derive the closure relation for polaritons made of three different types of excitons: bosonized excitons, Frenkel or Wannier excitons. In the case of polaritons made of Wann…
A predicted "Faraday oscillation" in photoexcited semiconductors
M. Combescot, O. Betbeder-Matibet
While, for semiconductors photoexcited by a circularly polarized pump, the polarization plane of a linearly polarized probe has been shown to rotate, we here predict a spectacular…
Composite boson many-body theory for Frenkel excitons
M. Combescot, W. V. Pogosov
We present a many-body theory for Frenkel excitons which takes into account their composite nature exactly. Our approach is based on four commutators similar to the ones we previou…
Bose-Einstein condensation in semiconductors: the key role of dark excitons
Monique Combescot, Odile Betbeder-Matibet, Roland Combescot
The non elementary-boson nature of excitons controls Bose-Einstein condensation in semiconductors. Composite excitons interact predominantly through Pauli exclusion; this produces…
Polariton-polariton scattering: exact results through a novel approach
M. Combescot, M. -A. Dupertuis, O. Betbeder-Matibet
We present a fully microscopic approach to the transition rate of two exciton-photon polaritons. The non-trivial consequences of the polariton composite nature -- here treated exac…
Exciton-exciton scattering: Composite boson versus elementary boson
M. Combescot, O. Betbeder-Matibet, R. Combescot
This paper introduces a new quantum object, the ``coboson'', for composite particles, like the excitons, which are made of two fermions. Although commonly dealed with as elementary…
The exciton many-body theory extended to arbitrary composite bosons
M. Combescot, O. Betbeder-Matibet, F. Dubin
We have recently constructed a many-body theory for composite excitons, in which the possible carrier exchanges between excitons can be treated exactly through a set of dimensi…
Electron teleportation between quantum dots using virtual dark exciton
M. Combescot, O. Betbeder-Matibet, V. Voliotis
We here propose a mechanism to teleport electrons between quantum dots through the transformation of a virtual bright exciton into a dark exciton. This mechanism relies on the inte…
Faraday rotation in photoexcited semiconductors: an excitonic many-body effect
M. Combescot, O. Betbeder-Matibet
This letter assigns the Faraday rotation in photoexcited semiconductors to ``Pauli interactions'', \emph{i}. \emph{e}., carrier exchanges, between the real excitons present in the…
How composite bosons really interact
M. Combescot, O. Betbeder-Matibet
The aim of this paper is to clarify the conceptual difference which exists between the interactions of composite bosons and the interactions of elementary bosons. A special focus i…
Many-body effects between unbosonized excitons
M. Combescot, O. Betbeder-Matibet
We here give a brief survey of our new many-body theory for composite excitons, as well as some of the results we have already obtained using it. In view of them, we conclude that,…
Major difference between true bosons and "proteons"
M. Combescot, O. Betbeder-Matibet
We call "proteons" -- from the ever-changing greek sea-god -- composite particles made of two fermions. Among them, are the semiconductor excitons, but also variou…