Friday 06 Mar 2015One-dimensional cavity QED: quantum technology with solid-state photonics and artificial atoms

Dr. Ruth Oulton - University of Bristol

Newman Red 12:00-13:00

Quantum dots are semiconductor artificial atoms. They are nanoscale structures that trap single electrons and holes, and their quantized energy level structure results in atomic-like transitions and single photon emission. These quantum dots act as a solid-state interface that is useful for quantum information applications, and for the past decade, semiconductor physicists have been attempting to replicate atomic cavity quantum electrodynamics in a practical semiconductor form. One can embed quantum dots into micron-sized photonic structures to capture and control the light emission, in order to use the single photon emission in quantum communication and quantum circuits. I will discuss our latest research into how quantum dots and photons interact, in particular discussing how "one-dimensional photonics" - structures that waveguide light with no scattering losses - may replace high Q-factor cavities for semiconductor cavity quantum electrodynamics, even when "deterministic" light-matter interactions are required. I will finish by discussing the future prospects for creating quantum dot deterministic, indistinguishable photon sources and long-term quantum memories.

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