Negativity of the Wigner function as an indicator of non-classicality

Aug 24, 2004
Published in:
  • J.Opt.B 6 (2004) 10, 396
  • Published: Aug 24, 2004

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Abstract: (IOP)
A measure of non-classicality of quantum states based on the volume of the negative partof the Wigner function is proposed. We analyse this quantity for Fock states, squeezeddisplaced Fock states and cat-like states defined as coherent superposition of two Gaussianwavepackets.