Quantum harmonic oscillator state synthesis and analysis

@inproceedings{Itano1997QuantumHO,
  title={Quantum harmonic oscillator state synthesis and analysis},
  author={Wayne M. Itano and Christopher R. Monroe and D. M. Meekhof and Dietrich Leibfried and B. E. King and David J. Wineland},
  booktitle={Photonics West},
  year={1997}
}
We laser-cool single beryllium ions in a Paul trap to the ground (n equals 0) quantum harmonic oscillator state with greater than 90% probability. From this starting point, we can put the atom into various quantum states of motion by application of optical and rf electric fields. Some of these states resemble classical states (the coherent states), while others are intrinsically quantum, such as number states or squeezed states. We have created entangled position and spin superposition states… 

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