Controllable Non-Markovianity for a Spin Qubit in Diamond

We present a flexible scheme to realize 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-Ma...

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Bibliographic Details
Published in:Physical review letters 2018-08, Vol.121 (6), p.060401-060401, Article 060401
Main Authors: Haase, J F, Vetter, P J, Unden, T, Smirne, A, Rosskopf, J, Naydenov, B, Stacey, A, Jelezko, F, Plenio, M B, Huelga, S F
Format: Article
Language:English
Subjects:
Bayesian analysis
Data analysis
Data points
Diamonds
Electron spin
Markov processes
Nitrogen
Quantum theory
Spin dynamics
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Summary:We present a flexible scheme to realize 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 dynamics. 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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.121.060401