Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling

D. Farfurnik; A. Jarmola; L. M. Pham; Z. H. Wang; V. V. Dobrovitski; R. L. Walsworth; D. Budker; N. Bar-Gill

doi:10.1117/12.2227479

Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling

D. Farfurnik^*, A. Jarmola, L. M. Pham, Z. H. Wang, V. V. Dobrovitski, R. L. Walsworth, D. Budker, N. Bar-Gill

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

In this work, we optimize a dynamical decoupling (DD) protocol to improve the spin coherence properties of a dense ensemble of nitrogen-vacancy (NV) centers in diamond. Using liquid nitrogen-based cooling and DD microwave pulses, we increase the transverse coherence time T₂ from ∼ 0.7 ms up to ∼ 30 ms. We extend previous work of single-axis (Carr-Purcell-Meiboom-Gill) DD towards the preservation of arbitrary spin states. After performing a detailed analysis of pulse and detuning errors, we compare the performance of various DD protocols. We identify that the concatenated XY8 pulse sequences serves as the optimal control scheme for preserving an arbitrary spin state. Finally, we use the concatenated sequences to demonstrate an immediate improvement of the AC magnetic sensitivity up to a factor of two at 250 kHz. For future work, similar protocols may be used to increase coherence times up to NV-NV interaction time scales, a major step toward the creation of quantum collective NV spin states.

Original language	English
Title of host publication	Quantum Optics
Editors	Andrew J. Shields, Jurgen Stuhler
Publisher	SPIE
ISBN (Electronic)	9781510601451
DOIs	https://doi.org/10.1117/12.2227479
State	Published - 2016
Event	Quantum Optics - Brussels, Belgium Duration: 5 Apr 2016 → 7 Apr 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9900
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Quantum Optics
Country/Territory	Belgium
City	Brussels
Period	5/04/16 → 7/04/16

Bibliographical note

Publisher Copyright:
© 2016 COPYRIGHT SPIE.

Keywords

NV
XY8
coherence
concatenated
decoherence
dynamical decoupling
magnetometry
nitrogen vacancy

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10.1117/12.2227479

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Farfurnik, D., Jarmola, A., Pham, L. M., Wang, Z. H., Dobrovitski, V. V., Walsworth, R. L., Budker, D., & Bar-Gill, N. (2016). Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling. In A. J. Shields, & J. Stuhler (Eds.), Quantum Optics Article 99000N (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9900). SPIE. https://doi.org/10.1117/12.2227479

@inproceedings{8005f68494b3474e80440cfdbfed5f40,

title = "Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling",

abstract = "In this work, we optimize a dynamical decoupling (DD) protocol to improve the spin coherence properties of a dense ensemble of nitrogen-vacancy (NV) centers in diamond. Using liquid nitrogen-based cooling and DD microwave pulses, we increase the transverse coherence time T2 from ∼ 0.7 ms up to ∼ 30 ms. We extend previous work of single-axis (Carr-Purcell-Meiboom-Gill) DD towards the preservation of arbitrary spin states. After performing a detailed analysis of pulse and detuning errors, we compare the performance of various DD protocols. We identify that the concatenated XY8 pulse sequences serves as the optimal control scheme for preserving an arbitrary spin state. Finally, we use the concatenated sequences to demonstrate an immediate improvement of the AC magnetic sensitivity up to a factor of two at 250 kHz. For future work, similar protocols may be used to increase coherence times up to NV-NV interaction time scales, a major step toward the creation of quantum collective NV spin states.",

keywords = "NV, XY8, coherence, concatenated, decoherence, dynamical decoupling, magnetometry, nitrogen vacancy",

author = "D. Farfurnik and A. Jarmola and Pham, {L. M.} and Wang, {Z. H.} and Dobrovitski, {V. V.} and Walsworth, {R. L.} and D. Budker and N. Bar-Gill",

note = "Publisher Copyright: {\textcopyright} 2016 COPYRIGHT SPIE.; Quantum Optics ; Conference date: 05-04-2016 Through 07-04-2016",

year = "2016",

doi = "10.1117/12.2227479",

language = "אנגלית",

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Farfurnik, D, Jarmola, A, Pham, LM, Wang, ZH, Dobrovitski, VV, Walsworth, RL, Budker, D & Bar-Gill, N 2016, Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling. in AJ Shields & J Stuhler (eds), Quantum Optics., 99000N, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9900, SPIE, Quantum Optics, Brussels, Belgium, 5/04/16. https://doi.org/10.1117/12.2227479

Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling. / Farfurnik, D.; Jarmola, A.; Pham, L. M. et al.
Quantum Optics. ed. / Andrew J. Shields; Jurgen Stuhler. SPIE, 2016. 99000N (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9900).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Budker, D.

AU - Bar-Gill, N.

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N2 - In this work, we optimize a dynamical decoupling (DD) protocol to improve the spin coherence properties of a dense ensemble of nitrogen-vacancy (NV) centers in diamond. Using liquid nitrogen-based cooling and DD microwave pulses, we increase the transverse coherence time T2 from ∼ 0.7 ms up to ∼ 30 ms. We extend previous work of single-axis (Carr-Purcell-Meiboom-Gill) DD towards the preservation of arbitrary spin states. After performing a detailed analysis of pulse and detuning errors, we compare the performance of various DD protocols. We identify that the concatenated XY8 pulse sequences serves as the optimal control scheme for preserving an arbitrary spin state. Finally, we use the concatenated sequences to demonstrate an immediate improvement of the AC magnetic sensitivity up to a factor of two at 250 kHz. For future work, similar protocols may be used to increase coherence times up to NV-NV interaction time scales, a major step toward the creation of quantum collective NV spin states.

AB - In this work, we optimize a dynamical decoupling (DD) protocol to improve the spin coherence properties of a dense ensemble of nitrogen-vacancy (NV) centers in diamond. Using liquid nitrogen-based cooling and DD microwave pulses, we increase the transverse coherence time T2 from ∼ 0.7 ms up to ∼ 30 ms. We extend previous work of single-axis (Carr-Purcell-Meiboom-Gill) DD towards the preservation of arbitrary spin states. After performing a detailed analysis of pulse and detuning errors, we compare the performance of various DD protocols. We identify that the concatenated XY8 pulse sequences serves as the optimal control scheme for preserving an arbitrary spin state. Finally, we use the concatenated sequences to demonstrate an immediate improvement of the AC magnetic sensitivity up to a factor of two at 250 kHz. For future work, similar protocols may be used to increase coherence times up to NV-NV interaction time scales, a major step toward the creation of quantum collective NV spin states.

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ER -

Improving the coherence properties of solid-state spin ensembles via optimized dynamical decoupling

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