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A simple and robust method for characterization of afterpulsing in single photon detectors
Gerhard Humer, Momtchil Peev, Christoph Schaeff +3
Single photon detectors are important for a wide range of applications each with their own specific requirements, which makes necessary the precise characterization of detectors. H…
Quantum estimation of the Schwarzschild space-time parameters of the Earth
David Edward Bruschi, Animesh Datta, Rupert Ursin +2
We propose a quantum experiment to measure with high precision the Schwarzschild space-time parameters of the Earth. The scheme can also be applied to measure distances by taking i…
An On-Demand Optical Quantum Random Number Generator with In-Future Action and Ultra-Fast Response
Mario Stipčević, Rupert Ursin
Random numbers are essential for our modern information based society e.g. in cryptography. Unlike frequently used pseudo-random generators, physical random number generators do no…
Crossed crystal scheme for fs-pulsed entangled photon generation in ppKTP
Thomas Scheidl, Felix Tiefenbacher, Robert Prevedel +3
We demonstrate a novel scheme for femto-second pulsed spontaneous parametric down-conversion in periodically poled KTP crystals. Our scheme is based on a crossed crystal configurat…
On the equivalence of Clauser-Horne and Eberhard inequality based tests
Andrei Khrennikov, Sven Ramelow, Rupert Ursin +3
Recently, the results of the first experimental test for entangled photons closing the detection loophole (also referred to as the fair sampling loophole) were published (Vienna, 2…
Teleportation of entanglement over 143 km
Thomas Herbst, Thomas Scheidl, Matthias Fink +4
As a direct consequence of the no-cloning theorem, the deterministic amplification as in classical communication is impossible for quantum states. This calls for more advanced tech…