Semiconductor Cavity Quantum Electrodynamics - download pdf or read online

By Y. Yamamoto, F. Tassone, H. Cao

ISBN-10: 3540455159

ISBN-13: 9783540455158

ISBN-10: 3540675205

ISBN-13: 9783540675204

Recent advances in semiconductor know-how have made it attainable to manufacture microcavity buildings during which either photon fields and electron--hole pairs (or excitons) are limited in a small quantity equivalent to their wavelength. The radiative houses of the electron--hole pairs and excitons are changed because of the drastic swap within the constitution of the electromagnetic-field modes. This e-book is the 1st to provide a entire account of the idea of semiconductor hollow space quantum electrodynamics for such platforms within the weak-coupling and strong-coupling regimes. the $64000 strategies are provided, including proper, fresh experimental results.

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The semiclassical theory is convenient for the computation of reflectivity, transmission, and absorption. The quantum theory, on the other hand, is more appropriate for the computation of photoluminescence (PL). Y. Yamamoto, F. Tassone, and H. Cao: Semiconductor Cavity Quantum Electrodynamics, STMP 169, 25–48 (2000) c Springer-Verlag Berlin Heidelberg 2000 26 2. 1 Semiclassical Theory In the semiclassical theory of microcavity exciton polaritons, Maxwell’s equations are solved together with a constitutive relation between the electric field and displacement field.

The energy separation between the two polariton states increases as the exciton–photon coupling increases. This exciton–polariton normal-mode splitting is the solid-state analog of the vacuum Rabi splitting in the atom–cavity case. In the time domain, the strong exciton–photon coupling makes the spontaneous-emission process reversible; namely, the emission from the microcavity shows an oscillation, instead of the usual exponential decay. This is because photons emitted by excitons are reabsorbed and reemitted a number of times before exiting the cavity.

Maxwell’s equations, with the above constitutive relation and the appropriate boundary conditions at each interface, completely specify the electrodynamic problem to be solved. Maxwell’s equations decouple into TE (or S) and TM (or P) polarizations in this case. The electric field is polarized along the y axis for TE polarization, and along the x and z axes for TM polarization. The z polarization is not coupled to the heavy-hole exciton. For a layered system, it is useful to formulate Maxwell’s equations in a transfermatrix scheme [54].

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Semiconductor Cavity Quantum Electrodynamics by Y. Yamamoto, F. Tassone, H. Cao

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