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Q: Fachverband Quantenoptik und Photonik

Q 55: Precision measurements and metrology III

Q 55.5: Talk

Friday, March 21, 2014, 11:45–12:00, DO24 1.101

Detection of a single charge using the NV center in diamondFlorian Dolde1, Marcus Doherty2, Julia Michl1, •Ingmar Jakobi1, Philipp Neumann1, Neil Manson2, and Jörg Wrachtrup113. Physikalisches Institut und SCoPE Research Center, Universität Stuttgart, Germany — 2Laser Physics Centre, Australian National University, Canberra, Australia

Advancement towards the characterization of nanoscale systems is a matter of particular interest in metrology. A fundamental step in this progress is the sensing of single particles.

Using electric field sensing techniques with nitrogen-vacancy (NV) centers in diamond we are able to detect a single charge under ambient conditions [1].

We use a pair of NV centers for our studies. One NV center can be employed as a sensitive electrometer to detect changes in the electric field. The second NV is used as a source, where a single electron can be displaced by optically switching between its neutral and negative charge states. For this purpose the NV centers need to have a close distance which we show using super-resolution techniques. In consequence, our measurements provide direct insight into the charge dynamics inside the material on a nanoscopic scale.

[1] F.Dolde, et al., arXiv:1310.4240 (2013)

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