Coherent population trapping (CPT) versus electromagnetically induced transparency (EIT)
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- Khan, S., Kumar, M.P., Bharti, V. et al. Eur. Phys. J. D (2017) 71: 38. doi:10.1140/epjd/e2017-70676-x
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We discuss the differences between two well-studied and related phenomena – coherent population trapping (CPT) and electromagnetically induced transparency (EIT). Many differences between the two – such as the effect of power in the beams, detuning of the beams from resonance, and the use of vapor cells filled with buffer gas – are demonstrated experimentally. The experiments are done using magnetic sublevels of the 1 → 1 transition in the D2 line of 87Rb.