Diffraction-Induced Entanglement Loss of High-Dimensional Orbital Angular-Momentum States

Zhao-Qi-Zhi Han, Xiao-Hua Wang, Zhi-Yuan Zhou +10 more

Alois Mair, Alipasha Vaziri, Gregor Weihs +1 more

Kuntuo Zhu, Zhangdong Ye

Abstract The entanglement loss of high-dimensional entangled orbital angular-momentum states in far-field diffraction by a circular aperture was studied theoretically. A general expression for high-dimensional entanglement decay is provided. The results show that the loss depends on both the parity and the magnitude of the orbital angular-momentum index, and it is not affected by a small misalignment error of the aperture.

Giacomo Sorelli, Vyacheslav Shatokhin, Filippus Stefanus Roux +1 more

We provide an analytical expression for the entanglement decay of initially maximally entangled orbital-angular-momentum biphoton states, when scattered off an obstruction. We show that the decay is controlled by the diffraction-induced mutual overlap between the diffracted field modes, and quantify its dependence on the size and position of the obstruction.

Robert Fickler, Radek Łapkiewicz, Christoph Schaeff +4 more

Sonja Franke‐Arnold, Stephen Mark Barnett, Miles J. Padgett +1 more