Abstract
We theoretically study the bichromatic driving of a solid-state cavity quantum electrodynamics (QED) system as a means of probing cavity dressed state transitions and observing the coherent interaction between the system and the light field. We show that this method can enable the observation of the higher order cavity dressed states, supersplitting and ac-Stark shift in a solid-state system comprised of a quantum dot (QD) strongly coupled to a photonic crystal cavity for the on- and far off-resonant cases. For the off-resonant case, phonons mediate off-resonant coupling between the QD and the photonic resonator, a phenomenon unique to solid-state cavity QED.
Highlights
Many proposed methods in quantum information processing employ the strong optical nonlinearity created by a single quantum emitter coupled to an optical resonator [1], as for example a quantum dot (QD) coupled to an optical microcavity [2]
Such solid state cavity quantum electrodynamics (QED) systems can be used for the scalable implementation of quantum information processing devices, but in order to do that it is important to observe the coherent interaction between the quantum dot and a laser field
The observation of the Mollow absorption spectrum is a classic example of bichromatic driving where a strong pump is used to dress the QD, whose absorption spectrum is observed via a weak probe [6]
Summary
Many proposed methods in quantum information processing employ the strong optical nonlinearity created by a single quantum emitter coupled to an optical resonator [1], as for example a quantum dot (QD) coupled to an optical microcavity [2] Such solid state cavity quantum electrodynamics (QED) systems can be used for the scalable implementation of quantum information processing devices, but in order to do that it is important to observe the coherent interaction between the quantum dot and a laser field. In this paper we show that in addition to QD dressing, such bichromatic driving can be used to observe several coherent effects in a dressed cavity QED system, including higher order dressed states, supersplitting of the polariton states, and the AC stark shift of the dressed states for a resonant cavityQD system These observations are made by measuring changes in the cavity emission intensity as a function of the probe frequency
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