Quantum information entropies of the eigenstates and the coherent state of the Pöschl-Teller potential

Details Quantum information entropies of the eigenstates and the coherent state of the Pöschl-Teller potential Quantum information entropies of the eigenstates and the coherent state of the Pöschl-Teller potential

2003-12-10

arxiv.org/abs/quant-ph/0312095v1

Phys. Rev. A 69, 052107 (2004)

Physics

Quantum Physics

Revtex4, 11 pages, 11 eps figures and a table

Scientific paper

10.1103/PhysRevA.69.052107

The position and momentum space information entropies, of the ground state of the P\"oschl-Teller potential, are exactly evaluated and are found to satisfy the bound, obtained by Beckner, Bialynicki-Birula and Mycielski. These entropies for the first excited state, for different strengths of the potential well, are then numerically obtained. Interesting features of the entropy densities, owing their origin to the excited nature of the wave functions, are graphically demonstrated. We then compute the position space entropies of the coherent state of the P\"oschl-Teller potential, which is known to show revival and fractional revival. Time evolution of the coherent state reveals many interesting patterns in the space-time flow of information entropy.

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