ABSTRACT
As discussed in Section 4.4 the strong coupling regime of cavity QED
is reached when the emitter-cavity coupling rate gcav dominates over the cavity loss rate κ and other decay modes of the emitter
γ , i.e., gcav > κ/2, γ . The strong coupling regime is not only ideal to test the field quantization formalism and the resulting Jaynes-
Cummings model [56, 344], but also the basis for many scalable
quantum computation and networking protocols [345-347]. Here,
the cavity mediates deterministic light-matter interaction on
the single-photon single-emitter level, allowing the realization of
quantum gates and interfaces between stationary and flying qubits.
In classical information processing, strong coupling can be used
to achieve ultrafast all-optical switches with ultralow switching
energies, reaching the one-photon level [348]. Thus, strongly
coupled solid state emitters promise to provide a scalable quantum
and classical optical information processing platform.
