Influence of electron-acoustic phonon scattering on off-resonant cavity feeding within a strongly coupled quantum-dot cavity system

Abstract

We present a medium-dependent quantum optics approach to describe the influence of electron-acoustic phonon coupling on the emission spectra of a strongly coupled quantum-dot cavity system. Using a canonical Hamiltonian for light quantization and a photon Green function formalism, phonons are included to all orders through the dot polarizability function obtained within the independent Boson model. We derive simple user-friendly analytical expressions for the linear quantum light spectrum, including the influence from both exciton and cavity-emission decay channels. In the regime of semiconductor cavity-QED, we study cavity emission for various exciton-cavity detunings and demonstrate rich spectral asymmetries as well as cavity-mode suppression and enhancement effects. Our technique is nonperturbative, and non-Markovian, and can be applied to study photon emission from a wide range of semiconductor quantum dot structures, including waveguides and coupled cavity arrays. We compare our theory directly to recent and apparently puzzling experimental data for a single site-controlled quantum dot in a photonic crystal cavity and show good agreement as a function of cavity-dot detuning and as a function of temperature.

Regular Paper, Submitted to PRB, Dec, 2010

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• Non-Markovian features in semiconductor quantum optics: Quantifying the role of phonons in experiment and theory
• Phonon impact on optical control schemes of quantum dots: The role of quantum dot geometry and symmetry
• Radiative coupling of quantum dots in photonic crystal structures
• Decoherence in semiconductor cavity QED systems due to phonon scattering
• On-demand generation of higher-order Fock states in quantum-dot--cavity systems
• Influence of phonons on solid-state cavity-QED investigated using nonequilibrium Green's functions
• Quenching of phonon-induced processes in quantum dots due to electron-hole asymmetries
• Semiclassical modeling of coupled quantum dot-cavity systems: From polariton-like dynamics to Rabi oscillations
• An analytic expression for the optical exciton transition rates in the polaron frame
• Impact of the phonon environment on the nonlinear quantum-dot-cavity QED. I. Path-integral approach
• Giant Purcell broadening and Lamb shift for DNA-assembled near-infrared quantum emitters
• Non-Markovian effects in long-range polariton-mediated energy transfer
• Unidirectional Quantum Transport in Optically Driven $V$-type Quantum Dot Chains
• Arbitrary vector beam generation in semiconductor quantum dots
• Using the Autler-Townes and ac Stark effects to optically tune the frequency of indistinguishable single-photons from an on-demand source