Related papers: Sensing Single Photon in a Cat State

Sensing Single Photon in a Cat State

URL: http://arxiv.org/abs/2011.00990v1
Date: Fri, 30 Oct 2020 17:55:44 GMT
Title: Sensing Single Photon in a Cat State
Authors: Arman, Gargi Tyagi and Prasanta K. Panigrahi
Abstract summary: Photon addition leads to a $pi $ phase shift at origin in the observed phase space interference of the Wigner function. Photon addition to Yurke-Stoler state characterized by Poissonian statistics leads to a sub-Poissonian distribution.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The cat state is shown to `store' a single photon through the superposition of its orthogonal counterpart with itself, and an excited oscillator state. Photon addition leads to a $\pi $ phase shift at origin in the observed phase space interference of the Wigner function, which also displays negativity, controlled by the average photon number ($|\alpha|^2$) of coherent states comprising the cat state. The maxima and minima of the sub-Planck tiles in the phase space of the kitten state are interchanged after photon addition, leading to their orthogonality. Interestingly, photon addition to Yurke-Stoler state characterized by Poissonian statistics leads to a sub-Poissonian distribution.

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