Harmonic oscillator kicked by spin measurements: A Floquet-like system without a classical analog

  title={Harmonic oscillator kicked by spin measurements: A Floquet-like system without a classical analog},
  author={Bento Montenegro and Nadja K. Bernardes and Fernando Parisio},
  journal={Physical Review A},
We present a kicked harmonic oscillator where the impulsive driving is provided by stroboscopic measurements on an ancillary degree of freedom and not by the canonical quantization of a time-dependent Hamiltonian. The ancila is dynamically entangled with the oscillator position, while the background Hamiltonian remains static. The dynamics of this system is determined in closed analytical form, allowing for the evaluation of a properly defined Loschmidt echo, ensemble averages, and phase-space… 

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