2015
DOI: 10.1103/physrevlett.114.017601
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Spectroscopy of Surface-Induced Noise Using Shallow Spins in Diamond

Abstract: We report on the noise spectrum experienced by few nanometer deep nitrogen-vacancy centers in diamond as a function of depth, surface coating, magnetic field and temperature. Analysis reveals a double-Lorentzian noise spectrum consistent with a surface electronic spin bath in the low frequency regime, along with a faster noise source attributed to surface-modified phononic coupling. These results shed new light on the mechanisms responsible for surface noise affecting shallow spins at semiconductor interfaces,… Show more

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Cited by 239 publications
(315 citation statements)
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“…These dynamics limit applications in sensing and quantum manybody physics, and can be overcome by using isotopically pure 12 C samples. Compared to typical coherence times of ∼ 5 µs for HPHT samples and ∼ 40 µs for an implanted sample (see supplementary material), potentially limited by surface effects [29], the standard grade sample exhibits the longest coherence time, which is the most challenging to preserve.…”
mentioning
confidence: 99%
“…These dynamics limit applications in sensing and quantum manybody physics, and can be overcome by using isotopically pure 12 C samples. Compared to typical coherence times of ∼ 5 µs for HPHT samples and ∼ 40 µs for an implanted sample (see supplementary material), potentially limited by surface effects [29], the standard grade sample exhibits the longest coherence time, which is the most challenging to preserve.…”
mentioning
confidence: 99%
“…Quantum systems, such as trapped ions (3), superconducting qubits (4,5), and spin defects (6,7) have been shown to perform as excellent spectrum analyzers and lock-in detectors for both classical and quantum fields (8)(9)(10). This sensing technique relies on modulation of the quantum probe during the interferometric detection of an external field.…”
mentioning
confidence: 99%
“…Generally, shallowly-implanted NV centers show reduced T 2 together with broadened ODMR lines [16,41,60,61]. Table 1 illustrates this reduction in comparison to deep, native centers.…”
Section: Photochromism Quantum Efficiencies and Coherence Timementioning
confidence: 99%