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Abstract |
Optically active spins in solids offer exciting opportunities as scalable and
feasible quantum-optical devices. Numerous material platforms including
diamond, semiconductors, and atomically thin 2d materials are under
investigation, where each platform brings some advantages of control and
feasibility along with other challenges. The inherently mesoscopic nature of
solid-state platforms leads to a multitude of dynamics between spins, charges,
vibrations and light. Implementing a high level of control on these
constituents and their interactions with each other creates exciting
opportunities for realizing stationary and flying qubits within the context of
spin-based quantum information science, as well as investigating mesoscopic
quantum systems. Quantum optics, developed originally for atomic systems,
provides a very valuable toolbox for this endeavour. In this talk, I will
provide a snapshot of the progress and challenges for two contrasting examples
for spin-photon interfaces, namely semiconductor quantum dots and confined
excitons in atomically thin materials. For the former, I will focus on a
method to suppress the magnetic noise of the nuclear ensemble by an effective
cooling mechanism. This method yields access to the nuclear sideband resolved
regime and coherent coupling between a single electron spin and the nuclear
ensemble. For the latter, I will discuss ways to deterministically trap long-
lasting confined excitons acting as artificial atoms, as well as their
integration into opto-electronic devices. |
