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A: Fachverband Atomphysik

A 8: Precision measurements and metrology II (with Q)

A 8.3: Vortrag

Montag, 18. März 2013, 14:45–15:00, F 128

High sensitivity temperature measuerements on the nanometer scale — •Philipp Neumann¹, Florian Dolde¹, Ingmar Jakobi¹, Gerald Waldherr¹, Rolf Reuter¹, Junichi Isoya², and Jörg Wrachtrup¹ — ¹3. Physikalisches Institut, Universität Stuttgart — ²Graduate School of Library, Information and Media Studies, University of Tsukuba, Japan

Here we demonstrate a novel method to measure temperatures with a sensitivity of ∼ 10 mK/√Hz and nanometer spatial resolution. Its temperature application range is at least from 120 K to 600 K and includes ambient conditions. It is therefore interesting for material and lifescience. We employ a single optically active paramagnetic defect in a nanometer size diamond, namely the nitrogen-vacancy center. More precisely the spin state can be read out optically and its energy levels depends on temperature among others. We have developed a novel technique to circumvent the main detrimental effects to achieve the stated sensitivity.