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arXiv · 1802.00819

Controllable Non-Markovianity for a Spin Qubit in Diamond

Jan F. Haase·Philipp J. Vetter·Thomas Unden·Andrea Smirne·Joachim Rosskopf·Boris Naydenov·Alastair Stacey·Fedor Jelezko·Martin B. Plenio·Susana F. Huelga
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Abstract

We present a flexible scheme to realize non-artificial non-Markovian dynamics of an electronic spin qubit, using a nitrogen-vacancy center in diamond where the inherent nitrogen spin serves as a regulator of the dynamics. By changing the population of the nitrogen spin, we show that we can smoothly tune the non-Markovianity of the electron spin's dynamic. Furthermore, we examine the decoherence dynamics induced by the spin bath to exclude other sources of non-Markovianity. The amount of collected measurement data is kept at a minimum by employing Bayesian data analysis. This allows for a precise quantification of the parameters involved in the description of the dynamics and a prediction of so far unobserved data points.

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Jan F. Haase, Philipp J. Vetter, Thomas Unden, Andrea Smirne, Joachim Rosskopf, Boris Naydenov, Alastair Stacey, Fedor Jelezko, Martin B. Plenio, Susana F. Huelga. 2018-02-02. Controllable Non-Markovianity for a Spin Qubit in Diamond. https://doi.org/10.1103/physrevlett.121.060401

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