Abstract
We present an experimental proof-of-principle for the generation and detection of pure two-qubit states that have been encoded in degrees of freedom that are common to both classical-light beams and single photons. Our protocol requires performing polarization tomography on a single qubit from a qubit pair. The degree of entanglement in the qubit pair is measured by concurrence, which can be directly extracted from intensity measurements—or photon counting—entering single-qubit polarization tomography.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Ashutosh Singh, Ijaz Ahamed, Dipankar Home, and Urbasi Sinha
J. Opt. Soc. Am. B 37(1) 157-166 (2020)
Hua-ying Liu, Rong Zhang, Ping Xu, Zhen-da Xie, Yan-xiao Gong, and Shi-ning Zhu
Opt. Lett. 44(2) 239-242 (2019)
P. Sánchez, J. Gonzales, V. Avalos, F. Auccapuclla, E. Suarez, and F. De Zela
Opt. Lett. 44(4) 1052-1055 (2019)