Spin-resolved quantum-dot resonance fluorescence
By A. N. Vamivakas, Yong-Jie Zhao, Chaoyang Lu, M. Atature. 2008
242 citations recorded by the source corpus.
Two experiments observe the so-called ‘Mollow triplet’ in the emission spectrum of a quantum dot—originating from resonantly driving a dot transition—and demonstrate the potential of these systems to act as single-photon sources and as a readout modality for electron-spin states. Confined spins in self-assembled semiconductor quantum dots promise to serve both as probes for studying mesoscopic physics in the solid state and as stationary qubits for quantum-information science1,2,3,4,5,6,7. Moreover, the excitations of self-assembled quantum dots can interact with near-infrared photons, providing an interface between stationary and ‘flying’ qubits. Here, we report the observation of spin-selective photon emission from a resonantly driven quantum-dot transition. The Mollow triplet8 in the scattered photon spectrum—the hallmark of resonance fluorescence when an optical transition is driven resonantly—is presented as a natural way to spectrally isolate the photons of interest from the original driving field. We also demonstrate that the relative frequencies of the two spin-tagged photon states can be tuned independent of an applied magnetic field through the spin-selective dynamic Stark effect, induced by the same driving laser. This demonstration should be a step towards the realization of challenging tasks such as electron-spin readout, heralded single-photon generation for linear-optics quantum computing and spin–photon entanglement.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/6b7411662893c5ff8ab859c3ccbb3b944f0304a8
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Nuclear spin physics in quantum dots: an optical investigation (2012, background): “More recently resonant fluorescence experiments where the excitation laser is resonant with the energy necessary for absorption from the highest lying valence level to the lowest lying conduction level (Muller et al., 2007) have shown beautiful analogies to atomic physics (Vamivakas et al., 2009).”
- Cascaded single-photon emission from the Mollow triplet sidebands of a quantum dot (2011, background): “teristic emission spectra in the frequency domain [21], and oscillations of the second-order photon correlation function [2] were all measured directly on the resonance emission from the QD.”