Improved quantum sensing with a single solid-state spin via spin-to-charge conversion
| Autor: | Mikhail D. Lukin, Ronald L. Walsworth, Jean-Christophe Jaskula, Erik Bauch, Alexei Trifonov, Brendan Shields |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Coherence time
Materials science Physics::Instrumentation and Detectors General Physics and Astronomy FOS: Physical sciences 02 engineering and technology engineering.material 01 natural sciences Noise (electronics) 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum system Sensitivity (control systems) 010306 general physics Spin-½ Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics business.industry Quantum sensor Diamond 021001 nanoscience & nanotechnology Coherent control engineering Optoelectronics 0210 nano-technology business Quantum Physics (quant-ph) |
| Popis: | Efficient optical readout of a single, solid-state electronic spin at room temperature is a key challenge for nanoscale quantum sensing. Here we apply the technique of spin-to-charge conversion to enhance the optical spin-state readout of a single Nitrogen-Vacancy (NV) color center in room temperature diamond, with no degradation in the NV spin coherence time. We demonstrate an order-of-magnitude improvement in spin readout noise per shot and about a factor of five improvement in AC magnetometry sensitivity, compared to the conventional NV spin-state optical readout method. This improvement is realized in a widely-applicable bulk diamond system. We show that selecting for successful charge state initialization leads to possible further improvement in sensitivity. This technique is well suited to sensing applications involving low duty cycle pulsed signals, e.g., in biomagnetometry, where long deadtimes demand optimized sensitivity per shot. 11 pages |
| Databáze: | OpenAIRE |
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