Universal enhancement of the optical readout fidelity of single electron spins at nitrogen-vacancy c

By M. Steiner, P. Neumann, J. Beck, F. Jelezko, J. Wrachtrup. 2009

167 citations recorded by the source corpus.

Precise readout of spin states is crucial for any approach toward physical realization of a spin-based quantum computer and for magnetometry with single spins. Here, we report a method to strongly improve the optical readout fidelity of electron spin states associated with single nitrogen-vacancy (NV) centers in diamond. The signal-to-noise ratio is enhanced significantly by performing conditional flip-flop processes between the electron spin and the nuclear spin of the NV center's nitrogen atom. The enhanced readout procedure is triggered by a short preparatory pulse sequence. As the nitrogen nuclear spin is intrinsically present in the system, this method is universally applicable to any nitrogen-vacancy center. Besides the readout method, our studies included coherent control over a single nitrogen nuclear spin for the first time.

Subfields: Electrical and Electronic Engineering, Geophysics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/18157953ab3ccdfa2f43fd168ed5b8bb61a0d79b

How researchers see this paper

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

In Electrical and Electronic Engineering

1. Á. Gali

In Geophysics

1. M. Turner
2. J. Schloss
3. J. Barry
4. R. Walsworth
5. C. Hart
6. L. Pham
7. Á. Gali
8. L. Childress

In Materials Chemistry

1. M. Turner
2. R. Walsworth
3. C. Hart
4. J. Schloss
5. J. Barry
6. L. Pham
7. E. Bauch
8. Á. Gali

Citations in the corpus

• 13C hyperfine interactions in the nitrogen-vacancy centre in diamond (2011, methodology): “The nitrogen hyperfine tensor AN has been extracted from both ensemble [11] and single-NV [12, 13] measurements, and causes a splitting of −2.16 MHz between ESR transition frequencies for different I Nz projections.”
• Sensitivity optimization for NV-diamond magnetometry (2019, methodology): “(Steiner et al., 2010) assert that microsecond-scale RF nuclear spin π-pulses are attainable, achieving such nuclear Rabi fre- quencies over large ensemble volumes ∼ (100 µm)3 may prove very difficult, making this method impractical for NV- ensembles with T ∗2 .”