Nonclassicality of coherent states: Entanglement of joint statistics Articles uri icon

publication date

  • December 2017

issue

  • 6 - 063802

volume

  • 96

International Standard Serial Number (ISSN)

  • 2469-9926

Electronic International Standard Serial Number (EISSN)

  • 2469-9934

abstract

  • Simple joint measurements of pairs of observables reveal that states considered universally as classical-like, such as SU(2) spin coherent states, Glauber coherent states, and thermal states, are actually nonclassical. We show that this holds because we can find a joint measurement the statistics of which is not separable. Eventually this may be extended to all states different from the maximally mixed state.

subjects

  • Physics

keywords

  • quantum measurements; quantum optics; quantum states of light; quantum-to-classical transition