Coherent population trapping in diamond N-V centers at zero magnetic field

Charles Santori*, David Fattal, Sean M. Spillane, Marco Fiorentino, Raymond G. Beausoleil, Andrew D. Greentree, Paolo Olivero, Martin Draganski, James R. Rabeau, Patrick Reichart, Brant C. Gibson, Sergey Rubanov, David N. Jamieson, Steven Prawer

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Coherent population trapping at zero magnetic field was observed for nitrogen-vacancy centers in diamond under optical excitation. This was measured as a reduction in photoluminescence when the detuning between two excitation lasers matched the 2.88 GHz crystal-field splitting of the color center ground states. This behavior is highly sensitive to strain, which modifies the excited states, and was unexpected following recent experiments demonstrating optical readout of single nitrogen-vacancy electron spins based on cycling transitions. These results demonstrate for the first time that three-level Lambda configurations suitable for proposed quantum information applications can be realized simultaneously for all four orientations of nitrogen-vacancy centers at zero magnetic field.

Original languageEnglish
Pages (from-to)7986-7994
Number of pages9
JournalOptics Express
Volume14
Issue number17
DOIs
Publication statusPublished - 2006
Externally publishedYes

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