Chained Quantum Arnold Transformations
  We put forward the concatenation of Quantum Arnold Transformations as a tool to obtain the wave function of a particle subjected to a harmonic potential which is switched on and off successively. This simulates the capture and release process of an ion in a trap and provides a mathematical picture of this physical process. 
Francisco F. L\'opez-Ruiz, Julio Guerrero and Victor Aldaya
quant-ph