Preparation of polarization-entangled mixed states of two photons (3 pages)

Guo‐Yong Xiang

Chuanwei Zhang

We propose a scheme for preparing arbitrary two-photons polarization-entangled mixed states via controlled location decoherence. The scheme uses only linear optical devices and single-mode optical fibers, and may be feasible in experiment within current optical technology.

Li Dong, Yan-Fang Lin, Qingyang Li +3 more

Bao‐Sen Shi, Akihisa Tomita

Chuanwei Zhang

We propose a scheme for preparing an arbitrary polarization-entangled mixed state starting from a pure state with location decoherence owing to the path difference. The scheme, using linear optical devices (beam splitter, half wave plate, quarter wave plate) and single-mode optical fibers, is feasible in experiment within current optical technology. We also give a simplified scheme for a special case $\\rho =p|\\psi><\\psi| +(1-p) |\\phi><\\phi|$.

Antı́a Lamas-Linares, John C. Howell, Dirk Bouwmeester