Generating arbitrary photon-number entangled states for continuous-variable quantum informatics.
We propose two experimental schemes that can produce an arbitrary photon-number entangled state (PNES) in a finite dimension. This class of entangled states naturally includes non-Gaussian continuous-variable (CV) states that may provide some practical advantages over the Gaussian counterparts (two-mode squeezed states). We particularly compare the entanglement characteristics of the Gaussian and the non-Gaussian states in view of the degree of entanglement and the Einstein-Podolsky-Rosen correlation, and further discuss their applications to the CV teleportation and the nonlocality test. The experimental imperfection due to the on-off photodetectors with nonideal efficiency is also considered in our analysis to show the feasibility of our schemes within existing technologies.
Department of Physics, Texas A&M University at Qatar, Education City, P.O.Box 23874, Doha, Qatar.
Su-Yong
SY
Lee
Jiyong
J
Park
Hai-Woong
HW
Lee
Hyunchul
H
Nha
D003198:Computer Simulation; D016247:Information Storage and Retrieval / Q000379:methods*; D007257:Information Theory; D015233:Models, Statistical; D017785:Photons; D011789:Quantum Theory