TY - JOUR
T1 - Experimental Demonstration of Three-Photon Coherent Population Trapping in an Ion Cloud
AU - Collombon, M.
AU - Chatou, C.
AU - Hagel, G.
AU - Pedregosa-Gutierrez, J.
AU - Houssin, M.
AU - Knoop, M.
AU - Champenois, C.
PY - 2019/9/18
Y1 - 2019/9/18
N2 - An interrogation protocol based on coherent population trapping in an N-level scheme atomic system leads to dark resonances involving three different photons. An ensemble of several hundred radio-frequency-trapped Ca+ ions is probed by three lasers simultaneously locked onto the same optical frequency comb, resulting in high-contrast spectral lines referenced to an atomic transition in the terahertz domain. We discuss the cause of uncertainties and limitations of this method and show that reaching subkilohertz resolution is experimentally possible by this interrogation protocol.
AB - An interrogation protocol based on coherent population trapping in an N-level scheme atomic system leads to dark resonances involving three different photons. An ensemble of several hundred radio-frequency-trapped Ca+ ions is probed by three lasers simultaneously locked onto the same optical frequency comb, resulting in high-contrast spectral lines referenced to an atomic transition in the terahertz domain. We discuss the cause of uncertainties and limitations of this method and show that reaching subkilohertz resolution is experimentally possible by this interrogation protocol.
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U2 - 10.1103/PhysRevApplied.12.034035
DO - 10.1103/PhysRevApplied.12.034035
M3 - Article
AN - SCOPUS:85072811871
VL - 12
JO - Physical Review Applied
JF - Physical Review Applied
SN - 2331-7019
IS - 3
M1 - 034035
ER -