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SYDD: Defect centers in diamond for applications in quantum optics and nanophotonics
SYDD 2: Defect centers in diamond for applications in quantum optics and nanophotonics II
SYDD 2.2: Hauptvortrag
Freitag, 6. März 2009, 14:30–15:00, Audi-B
Photonic crystal cavities - A basic element for scalable quantum electrodynamics with diamond N-V centers — •Joseph Salzman and Igal Bayn — Technion, The Israel Institute of Technology, Haifa, Israel 32000
Impurity atoms in diamond (such as the N-V center), exhibit unique spin properties that can be turned into efficient units of quantum information technology. 2D Photonic Crystal Structures in diamond are being considered as an attractive architecture for the control and manipulation of atom-photon coupling. This implementation requires the capability to couple the optical emission of the impurity atom to a cavity with a sharp spectral resonance. In addition, the Photonic crystal (PC) architecture provides integral scalability, a very important property for quantum information applications. In this talk we review recent progress in diamond PC nanocavities. We discuss the challenges in reaching high Q values in diamond and in low-є materials in general. We present both semi-analytical and 3D Finite-Difference-Time-Domain (FDTD) computations, deriving the geometry of an ultra high-Q nanocavity with Q ≈ 1.3 · 106 with Vm=1.77 · (λ /n)3. Then, we describe photonic crystal cavity fabrication in mono-crystalline diamond using high energy Ion Implantation, and Focused-Ion-Beam (FIB) milling.