Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 24: Quantum Information (Solid State Systems)

Q 24.3: Talk

Monday, March 5, 2018, 16:45–17:00, K 1.020

Thin vacancy as a novel candidate for quantum information processing — •Mathias H. Metsch¹, Petr Siyushev¹, Takayuki Iwasaki², Mutsuko Hatano², Shinobu Onoda³, Junichi Isoya⁴, and Fedor Jelezko¹ — ¹Institute for Quantum Optics, Ulm University, D-89081 Germany — ²Department of Electrical and Electronic Engineering, Tokyo Institute of Technology , Meguro, Tokyo 152 - 8552, Japan — ³Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan — ⁴Research Centre for Knowledge Communities, University of Tsukuba, Tsukuba, Ibaraki 305-8550, Japan

The negatively charged thin vacancy (SnV) center in diamond is another color center formed by an impurity of the fourth group of chemical elements. Along with silicon and germanium it forms defect centers of D3d symmetry that show good optical properties in combination with a spin 1/2 qubit. Due to the much larger ground state splitting undesirable phonon interaction is reduced at higher temperatures which should lead to longer electron spin coherence comparable with silicon vacancy at mK temperatures. The combination of a potentially long lived spin 1/2 qubit with a bright and narrow optical transition turns the SnV into an interesting candidate light matter interface applications.