Conversions of Quantum Dynamics Trajectory into Audio files
An alternative way to perceive quantum dynamics simulations is generation of sound-based density matrix oscillations of populations of excited states (implemented in the “qd” module). This may be of help for outreach activities and for visually impaired users.PyAudio 33 and SciPy 34libraries are used. The user specifies a particular excited state. Then, excited state population changes along the trajectory are automatically slowed down to the audible frequency range (20- 20,000 Hz). For example, a trajectory of 50 ps is slowed down by a factor of 2x1010 and converted into 1 s of a sound track. Moreover, nearly resonant energy levels of pigments are audibly distinguishable as they lead to low frequency beats (See supporting information for samples.)