218 citations · 359 across the 11 of their papers we have counts for
11 papers
QUICK -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space
Najme Ahmadi, Sven Schwertfeger, Philipp Werner +19
Modern quantum technologies have matured such that they can now be used in space applications, e.g., long-distance quantum communication. Here, we present the design of a compact t…
Realizing quantum nodes in space for cost-effective, global quantum communication: in-orbit results and next steps
Chithrabhanu Perumangatt, Tom Vergoossen, Alexander Lohrmann +6
Quantum sources and receivers operating on-board satellites are an essential building block for global quantumnetworks. SpooQy-1 is a satellite developed at the Centre for Quantum…
Thermo-mechanical design for a miniaturized quantum light source on board the SpooQy-1 CubeSat
Huai Ying Lim, Tom Vergoossen, Robert Bedington +8
This paper presents the thermo-mechanical design of the quantum light source on board SpooQy-1, a 3U CubeSat that was deployed from the International Space Station on 17th June 201…
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…
Enhancing SPDC brightness using elliptical pump shapes
Aitor Villar, Arian Stolk, Alexander Lohrmann +1
We report on the use of elliptical pump spatial modes to increase the observed brightness of spontaneous parametric downconversion in critically phase matched crystals. Simulations…
Generating entangled photon pairs in a parallel crystal geometry
Alexander Lohrmann, Aitor Villar, Alexander Ling
We present recent findings towards developing brighter entangled photon sources in critically phase matched (CPM) nonlinear crystals. Specifically, we use type-I collinear phase ma…
High fidelity field stop collection for polarization-entangled photon pair sources
Alexander Lohrmann, Aitor Villar, Arian Stolk +1
We present an experimental demonstration of a bright and high fidelity polarization entangled photon pair source. The source is constructed using two critically phase matched -B…
Experimental entangled photon pair generation using crystals with parallel optical axes
Aitor Villar, Alexander Lohrmann, Alexander Ling
We present an optical design where polarization-entangled photon pairs are generated within two -Barium Borate crystals whose optical axes are parallel. This design increases th…
Single-photon emitting diode in silicon carbide
A. Lohrmann, N. Iwamoto, Z. Bodrog +7
Electrically driven single-photon emitting devices have immediate applications in quantum cryptography, quantum computation and single-photon metrology. Mature device fabrication p…