Maximal depth of nonclassicality of light

Marcelo A. Marchiolli, Vanderlei Salvador Bagnato, Y. Guimarães +1 more

Jungsang Kim, Seema Somani, Y. Yamamoto

Kisik Kim

We introduce marginal states of light which are barely classical and hence lie on the boundary between classical and nonclassical states. A marginal state may be obtained as an output of a beam splitter with vanishingly small transmission coefficient and a very intense nonclassical light as an input. We also point out that any marginal state can be made to be maximally nonclassical by adding a single photon. The close relation between nonclassicality and the particle nature of light is addressed.

Klemens Hammerer, Claudiu Genes, David Vitali +4 more

F Egbe, Kang Il Seo, Ching Tsung Lee

The photon-number distribution for the single-mode radiation, as the result of the number state reflected from a grey body, has been given by Bekenstein and Schiffer. This problem is extended to the case where the incident light is the binomial mixed state. The nonclassical effects of the reflected radiation are studied. The nonclassical depth is determined explicitly. As expected, the nonclassical depth of the state decreases as the absorptivity increases. The critical point in the transition from nonclassical state to classical one is located. It is shown that the state becomes the negative-binomial mixed state at this transition point.

Seokhyun Jang, Kisik Kim

We investigate the connection between the particle nature of light and its nonclassical character. When we can associate a precise number of photons, in some sense, to a particular state of light, the state possesses a full particle nature. We show that whenever a complete particle nature emerges in the state of light, the corresponding nonclassical measure becomes unity, and the state becomes maximally nonclassical.