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- W2893821361 abstract "The negatively charged nitrogen vacancy ($mathrm{N}{mathrm{V}}^{ensuremath{-}}$) defect in diamond serves as a popular platform for manipulating and exploiting long-lived coherent spin dynamics at room temperature combined with optical readout. The required spin polarization of the spin triplet $^{3}A_{2}$ electronic ground state occurs through a cycle of repetitious optical photoexcitation events to the $^{3}E$ electronic excited state that is accompanied by a series of electronic transitions to a $^{1}A_{1}$ and a $^{1}E$ electronic state, and back to the $^{3}A_{2}$ state. The timescales of these transitions are largely known, yet for the relaxation time of the $^{1}A_{1}ensuremath{rightarrow}^{1}E$ infrared transition, which predominantly occurs via nonradiative recombination, only an upper limit of 1 ns could be determined so far. Here, we employ ultrafast transient absorption spectroscopy to probe the dynamics of the nonradiative relaxation from the $^{1}A_{1}$ to the $^{1}E$ state after photoexcitation of the $^{3}E$ state and find a relaxation time of 100 ps at a temperature of 78 K." @default.
- W2893821361 created "2018-10-05" @default.
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- W2893821361 creator A5080475869 @default.
- W2893821361 date "2018-09-28" @default.
- W2893821361 modified "2023-10-17" @default.
- W2893821361 title "Excited-state lifetime of the <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi mathvariant=normal>N</mml:mi><mml:msup><mml:mrow><mml:mi mathvariant=normal>V</mml:mi></mml:mrow><mml:mo>−</mml:mo></mml:msup></mml:mrow></mml:math> infrared transition in diamond" @default.
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- W2893821361 doi "https://doi.org/10.1103/physrevb.98.094309" @default.
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