Two-level System coupled to Phonons: Full Analytical Solution.
We propose an analytical procedure to fully solve a two-level system coupled to phonons. Instead of using the common formulation in terms of linear and quadratic system-phonon couplings, we introduce different phonons depending on the system electronic level. We use this approach to recover known results for the linear-coupling limit in a simple way. More importantly, we derive results for the quadratic coupling induced by a phonon frequency change, a problem considered up to now as not analytically solvable.
Publisher URL: http://arxiv.org/abs/1812.09043
DOI: arXiv:1812.09043v2
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