Anisotropic interactions of a single spin and dark-spin spectroscopy in diamond

By R. Epstein, F. M. Mendoza, Y. Kato, David D. Awschalom. 2005

372 citations recorded by the source corpus.

Experiments on single nitrogen–vacancy (N–V) centres in diamond, which include electron spin resonance1, Rabi oscillations2, single-shot spin readout3 and two-qubit operations with a nearby13C nuclear spin4, show the potential of this spin system for solid-state quantum information processing. Moreover, N–V centre ensembles can have spin-coherence times exceeding 50 μs at room temperature5. We have developed an angle-resolved magneto-photoluminescence microscope apparatus to investigate the anisotropic electron-spin interactions of single N–V centres at room temperature. We observe negative peaks in the photoluminescence as a function of both magnetic-field magnitude and angle that are explained by coherent spin precession and anisotropic relaxation at spin-level anti-crossings. In addition, precise field alignment unmasks the resonant coupling to neighbouring ‘dark’ nitrogen spins, otherwise undetected by photoluminescence. These results demonstrate the capability of our spectroscopic technique for measuring small numbers of dark spins by means of a single bright spin under ambient conditions.

Subfields: Atomic and Molecular Physics, and Optics, Geophysics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/0daeb9253f79f05b1990deb484dd6f937bdcec52

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. David D. Awschalom
2. Fedor Jelezko
3. J. Wrachtrup
4. V. Jacques
5. J. Meijer
6. N. Manson
7. S. Pezzagna
8. C. Degen

In Geophysics

1. David D. Awschalom
2. N. Manson
3. J. Meijer
4. S. Pezzagna
5. Á. Gali
6. L. Childress

In Materials Chemistry

1. David D. Awschalom
2. Á. Gali
3. Fedor Jelezko
4. J. Wrachtrup
5. V. Jacques
6. J. Meijer
7. N. Manson
8. S. Pezzagna

Citations in the corpus

• Nitrogen-vacancy centers in diamond: nanoscale sensors for physics and biology. (2014, background): “Examples include magnetic moments (electron spins, nuclear spins) (25, 53–55), electric fields (56, 57), charge, voltage, current, orientation (37, 58), strain, temperature (59–63), and pressure (64), and yet more physical quantities can be envisioned.”
• Magnetic-field-dependent photodynamics of single NV defects in diamond: an application to qualitative all-optical magnetic imaging (2012, background): “a level anti-crossing within the excited and ground level, respectively [22, 25].”
• Quantum measurement and orientation tracking of fluorescent nanodiamonds inside living cells. (2011, methodology): “6 mT) was used to produce an orientation-dependent Zeeman shif”
• A diamond nanowire single-photon source. (2009, background): “Because the NV centre dipole is polarized in the (111) plane of a (100) diamond nanowir”
• Quantum register based on coupled electron spins in a room-temperature solid. (2010, background): “Recent experiments showing that nitrogen–vacancy defects can be coupled to spins of substitutional nitrogen have highlighted avenues for extending the scalability potential of the diamond quantum registe”
• Infrared emission of the NV centre in diamond: Zeeman and uniaxial stress studies (2008, background): “fields at 514 Gauss and 660 Gauss there is cross relaxation between the NV centre aligned with the field and other spin systems in the crystal (single substitutional nitrogen defects and nonaligned NV centres, respectively) [21, 22].”
• Diamond-based single-photon emitters (2011, result): “This is in contrast to NV− where the center geometry gives rise to orthogonal incoherent transition dipoles [34, 113], therefore the emitted light is not fully polarized.”