Dynamical Decoupling of a single electron spin at room temperature

By B. Naydenov, F. Dolde, L. T. Hall, C. Shin, H. Fedder, Lloyd Christopher L. Hollenberg, Fedor Jelezko, J. Wrachtrup. 2010

238 citations recorded by the source corpus.

Here we report the increase of the coherence time T$_2$ of a single electron spin at room temperature by using dynamical decoupling. We show that the Carr-Purcell-Meiboom-Gill (CPMG) pulse sequence can prolong the T$_2$ of a single Nitrogen-Vacancy center in diamond up to 2.44 ms compared to the Hahn echo measurement where T$_2 = 390 \mu$s. Moreover, by performing spin locking experiments we demonstrate that with CPMG the maximum possible $T_2$ is reached. On the other hand, we do not observe strong increase of the coherence time in nanodiamonds, possibly due to the short spin lattice relaxation time $T_1=100 \mu$s (compared to T$_1$ = 5.93 ms in bulk). An application for detecting low magnetic field is demonstrated, where we show that the sensitivity using the CPMG method is improved by about a factor of two compared to the Hahn echo method.

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

View Paper: https://www.semanticscholar.org/paper/03e47c6b71b463a620a12a9be72074dc8b9689a1

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. R. Walsworth
2. Fedor Jelezko
3. J. Wrachtrup
4. L. Pham
5. P. Neumann
6. Martin Bodo Plenio
7. Dmitry Budker
8. Fernando G. S. L. Brandão

In Geophysics

1. R. Walsworth
2. L. Pham
3. M. Turner
4. Á. Gali
5. J. Schloss
6. J. Barry

In Materials Chemistry

1. R. Walsworth
2. L. Pham
3. Fedor Jelezko
4. J. Wrachtrup
5. P. Neumann
6. Thomas Wolf
7. M. Turner
8. Á. Gali

Citations in the corpus

• Subpicotesla Diamond Magnetometry (2014, background): “Note that this filter is different from (1) filter functions implemented with microwave pulses with the intention to shape the response of NV centers towards a certain band of magnetic signal frequencies [40,41] and (2) filter functions related to data (post-)processing (e.”
• Solid-state electronic spin coherence time approaching one second (2012, methodology): “At T1⁄4 77K with n1⁄4 4,096 pulses, we obtained a coherence time of T21⁄4 50(9)ms, with a scaling of the coherence time with the number of pulses of T2(n)1⁄4 n0.”
• Robust dynamical decoupling with concatenated continuous driving (2011, background): “Thus this relatively slow bath is both practically important and at the same time ideal for decoupling experiments [21] and thus for the demonstration of CCD.”