Excitation spectra of a quantum ring embedded in a photon cavity

Abstract

We explore the response of a quantum ring system coupled to a photon cavity with a single mode when excited by a classical dipole field. We find that the energy oscillates between the electronic and photonic components of the system. The contribution of the linear and the quadratic terms in the vector potential to the electron-photon interaction energy are of similar magnitude, but opposite signs stressing the importance of retaining both in the model. Furthermore, we find different Fourier spectra for the oscillations of the center of charge and the oscillations of the mean photon number in time. The Fourier spectra are compared to the spectrum of the many-body states and selection rules discussed. In case of the center of charge oscillations, the dipole matrix elements preselect the allowed Bohr frequencies of the transitions, while for the oscillations of the mean photon number, the difference of the photon content of the many-body states influences the selection rules.

arXiv commentRevTeX, 9 pages with 10 embedded eps-figures

References in corpus (18)

• Photon-assisted transport in semiconductor nanostructures
• Polariton quantum blockade in a photonic dot
• Non-Markovian reduced dynamics and entanglement evolution of two coupled spins in a quantum spin environment
• Superradiant terahertz emission by dipolaritons
• Electric dipole moment oscillations in Aharonov-Bohm quantum rings
• Influence of shape of quantum dots on their far-infrared absorption
• Non-adiabatic current generation in a finite width semiconductor ring
• Aharonov-Bohm quantum rings in high-Q microcavities
• Asymmetry of localised states in a single quantum ring: polarization dependence of excitons and biexcitons
• Nonadiabatic quantum pumping in mesoscopic nanostructures
• Magnetic-field influenced non-equilibrium transport through a quantum ring with correlated electrons in a photon cavity
• Quantum magneto-electrodynamics of electrons embedded in a photon cavity
• Non-adiabatic generation of a pure spin current in a 1D quantum ring with spin-orbit interaction
• Persistent charge and spin currents in a 1D ring with Rashba and Dresselhaus spin-orbit interactions by excitation with a terahertz pulse
• Geometry and linearly polarized cavity photon effects on the charge and spin currents of spin-orbit interacting electrons in a quantum ring
• Impact of a circularly polarized cavity photon field on the charge and spin flow through an Aharonov-Casher ring
• Excitation of radial collective modes in a quantum dot: Beyond linear response
• Symmetric excitation and de-excitation of a cavity QED system

Cited by in corpus (8)

• Cavity-photon contribution to the effective interaction of electrons in parallel quantum dots
• Optical switching of electron transport in a waveguide-QED system
• Manifestation of the Purcell effect in current transport through a dot-cavity-QED system
• The photocurrent generated by photon replica states of an off-resonantly coupled dot-cavity system
• The interplay of electron-photon and cavity-environment coupling on the electron transport through a quantum dot system
• Generalized Master Equation Approach to Time-Dependent Many-Body Transport
• Competition of static magnetic and dynamic photon forces in electronic transport through a quantum dot
• Thermoelectric inversion in a resonant quantum dot-cavity system in the steady-state regime