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Lock-in detection of single photons after two-step frequency conversion

Andreas Lenhard1, Sebastian Zaske, Christoph Becher

  • 1Fachrichtung 7.2 (Experimentalphysik), Universität des Saarlandes, Saarbrücken 66123, Germany.

Optics Letters
|October 18, 2012
PubMed

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Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
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