scqubits.utils.spectrum_utils.emission_spectrum¶

scqubits.utils.spectrum_utils.emission_spectrum(spectrum_data)[source]¶

Takes spectral data of energy eigenvalues and returns the emission spectrum relative to a state of given index.

The resulting “upwards” transition frequencies are calculated by subtracting from eigenenergies the energy of the select state, and multiplying the result by -1. Resulting negative frequencies, corresponding to absorption instead, are omitted.