6 papers
Entanglement demonstration on board a nano-satellite
Aitor Villar, Alexander Lohrmann, Xueliang Bai +14
Global quantum networks for secure communication can be realised using large fleets of satellites distributing entangled photon-pairs between ground-based nodes. Because the cost o…
Experimental conversion of position correlation into polarization entanglement
Chithrabhanu Perumangatt, Alexander Lohrmann, Alexander Ling
This manuscript presents a method to convert position correlation of photon-pairs into polarization entanglement. This is achieved by individually manipulating the polarization sta…
Broadband pumped polarization entangled photon-pair source in a linear beam displacement interferometer
Alexander Lohrmann, Chithrabhanu Perumangatt, Aitor Villar +1
We experimentally demonstrate a source of polarization entangled photon-pairs based on a single periodically-poled potassium titanyl phosphate (PPKTP) crystal pumped with a broadba…
Experimental comparison of tomography and self-testing in certifying entanglement
Koon Tong Goh, Chithrabhanu Perumangatt, Zhi Xian Lee +2
We assess the quality of a source of allegedly pure two-qubit states using both standard tomography and methods inspired by device-independent self-testing. Even when the detection…
Pancharatnam phase in non-separable states of light
Chithrabhanu Perumangatt, Salla Gangi Reddy, Nijil Lal +3
We generate the non-separable state of polarization and orbital angular momentum (OAM) using a laser beam. The generated state undergoes a cyclic polarization evolution which intro…
Scattering of non-separable states of light
P. Chithrabhanu, Salla Gangi Reddy, Ali Anwar +3
We experimentally show that the non-separability of polarization and orbital angular momentum present in a light beam remains preserved under scattering through a random medium lik…