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We report optoelectronic control of spin and pseduspins in atomically thin transition metal dichalcogenides, which are a new class of semiconductors at the two dimensional limit with strong spin-orbit coupling.
We present two-color pump-probe spectra of excitons and trions in monolayer MoSe2. Isolated spectral cross-peaks reveal coherent exciton-trion coupling due to many-body interactions. Density matrix calculations suggest the formation of a correlated exciton-trion state.
We report the suppression of nuclear spin fluctuations in a self assembled quantum dot via coherent dark state spectroscopy, resulting in a factor of 40 enhancement of the coherence time of a single electron spin.
We demonstrate the optical initialization and ultrafast coherent control of an electron spin in a self-assembled dot, showing a spin Rabi oscillation and time-resolved precession of the electron spin coherence.
We demonstrate, to our knowledge, the first coherent transient measurements of a single self-assembled InAs quantum dot charged with a single electron. The measurements show both trion Rabi oscillations and spin quantum beats.
Coherent ultrafast optically controlled rotation of electron spins in an ensemble of charged quantum dots is demonstrated, laying the ground work for spin initialization and Rabi oscillations.
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