Coherent Population Trapping in Diamond N-V Centers at Zero Magnetic Field

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.

8 pages, 5 figures, new figure added

Cited by in corpus (7)

• Coherent Population Trapping of Single Spins in Diamond Under Optical Excitation
• Excited-state spectroscopy of single NV defects in diamond using optically detected magnetic resonance
• New infrared emission of the NV centre in diamond: Zeeman and uniaxial stress studies
• Creating diamond color centers for quantum optical applications
• Vertical distribution of nitrogen-vacancy centers in diamond formed by ion implantation and annealing
• Decoherence-free quantum-information processing using dipole-coupled qubits
• Single photon quantum non-demolition in the presence of inhomogeneous broadening