Search Results - "Kurtsiefer, Christian"

Full-field implementation of a perfect eavesdropper on a quantum cryptography system by Gerhardt, Ilja, Liu, Qin, Lamas-Linares, Antía, Skaar, Johannes, Kurtsiefer, Christian, Makarov, Vadim

“…Quantum key distribution (QKD) allows two remote parties to grow a shared secret key. Its security is founded on the principles of quantum mechanics, but in…”
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Random numbers from vacuum fluctuations by Shi, Yicheng, Chng, Brenda, Kurtsiefer, Christian

“…We implement a quantum random number generator based on a balanced homodyne measurement of vacuum fluctuations of the electromagnetic field. The digitized…”
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Time-resolved scattering of a single photon by a single atom by Leong, Victor, Seidler, Mathias Alexander, Steiner, Matthias, Cerè, Alessandro, Kurtsiefer, Christian

“…Scattering of light by matter has been studied extensively in the past. Yet, the most fundamental process, the scattering of a single photon by a single atom,…”
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Nonlinear photon-atom coupling with 4Pi microscopy by Chin, Yue-Sum, Steiner, Matthias, Kurtsiefer, Christian

“…Implementing nonlinear interactions between single photons and single atoms is at the forefront of optical physics. Motivated by the prospects of deterministic…”
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High speed optical quantum random number generation by Fürst, Martin, Weier, Henning, Nauerth, Sebastian, Marangon, Davide G, Kurtsiefer, Christian, Weinfurter, Harald

“…We present a fully integrated, ready-for-use quantum random number generator (QRNG) whose stochastic model is based on the randomness of detecting single…”
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Strong interaction between light and a single trapped atom without the need for a cavity by Kurtsiefer, Christian, Tey, Meng Khoon, Chen, Zilong, Aljunid, Syed Abdullah, Chng, Brenda, Huber, Florian, Maslennikov, Gleb

“…Many quantum information processing protocols require efficient transfer of quantum information from a flying photon to a stationary quantum system. To…”
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Reversing the temporal envelope of a heralded single photon using a cavity by Srivathsan, Bharath, Gulati, Gurpreet Kaur, Cerè, Alessandro, Chng, Brenda, Kurtsiefer, Christian

“…We demonstrate a way to prepare single photons with a temporal envelope that resembles the time reversal of photons from the spontaneous decay process. We use…”
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Experimental demonstration of free-space decoy-state quantum key distribution over 144 km by Schmitt-Manderbach, Tobias, Weier, Henning, Fürst, Martin, Ursin, Rupert, Tiefenbacher, Felix, Scheidl, Thomas, Perdigues, Josep, Sodnik, Zoran, Kurtsiefer, Christian, Rarity, John G, Zeilinger, Anton, Weinfurter, Harald

“…We report on the experimental implementation of a Bennett-Brassard 1984 (BB84) protocol type quantum key distribution over a 144 km free-space link using weak…”
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Transmission spectroscopy of a single atom in the presence of tensor light shifts by Steiner, Matthias, Chin, Yue-Sum, Kurtsiefer, Christian

“…We investigate the interplay between Zeeman and light shifts in the transmission spectrum of an optically trapped, spin-polarized Rubidium atom. The spectral…”
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Stable solid-state source of single photons by Kurtsiefer, C, Mayer, S, Zarda, P, Weinfurter, H

“…Fluorescence light observed from a single nitrogen-vacancy center in diamond exhibits strong photon antibunching: The measured pair correlation function…”
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Experimental detection of multipartite entanglement using witness operators by Bourennane, Mohamed, Eibl, Manfred, Kurtsiefer, Christian, Gaertner, Sascha, Weinfurter, Harald, Gühne, Otfried, Hyllus, Philipp, Bruss, Dagmar, Lewenstein, Maciej, Sanpera, Anna

“…We present the experimental detection of genuine multipartite entanglement using entanglement witness operators. To this aim, we introduce a canonical way of…”
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Phase shift of a weak coherent beam induced by a single atom by Aljunid, Syed Abdullah, Tey, Meng Khoon, Chng, Brenda, Liew, Timothy, Maslennikov, Gleb, Scarani, Valerio, Kurtsiefer, Christian

“…We report on a direct measurement of a phase shift on a weak coherent beam by a single 87Rb atom in a Mach-Zehnder interferometer. By strongly focusing the…”
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Probing the quantum-classical boundary with compression software by Poh, Hou Shun, Markiewicz, Marcin, Kurzy ski, Pawe, Cerè, Alessandro, Kaszlikowski, Dagomir, Kurtsiefer, Christian

“…We adapt an algorithmic approach to the problem of local realism in a bipartite scenario. We assume that local outcomes are simulated by spatially separated…”
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Detection of single molecules illuminated by a light-emitting diode by Gerhardt, Ilja, Mai, Lijian, Lamas-Linares, Antía, Kurtsiefer, Christian

“…Optical detection and spectroscopy of single molecules has become an indispensable tool in biological imaging and sensing. Its success is based on fluorescence…”
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Joint spectrum mapping of polarization entanglement in spontaneous parametric down-conversion by Poh, Hou Shun, Lum, Chune Yang, Marcikic, Ivan, Lamas-Linares, Antía, Kurtsiefer, Christian

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The black paper of quantum cryptography: Real implementation problems by Scarani, Valerio, Kurtsiefer, Christian

“…The laws of physics play a crucial role in the security of quantum key distribution (QKD). This fact has often been misunderstood as if the security of QKD…”
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Generation of an exponentially rising single-photon field from parametric conversion in atoms by Gulati, Gurpreet Kaur, Srivathsan, Bharath, Chng, Brenda, Cerè, Alessandro, Matsukevich, Dzmitry, Kurtsiefer, Christian

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The breakdown flash of silicon avalanche photodiodes-back door for eavesdropper attacks? by Kurtsiefer, Christian, Zarda, Patrick, Mayer, Sonja, Weinfurter, Harald

“…Silicon avalanche photodiodes are the most sensitive photodetectors in the visible to near-infrared region for a wavelength <1000 nm. However, when they are…”
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Polarization entanglement and quantum beats of photon pairs from four-wave mixing in a cold 87Rb ensemble by Gulati, Gurpreet Kaur, Srivathsan, Bharath, Chng, Brenda, Cerè, Alessandro, Kurtsiefer, Christian

“…We characterize correlations in polarization and time of photon pairs generated from a cold cloud of 87Rb atoms via a four-wave mixing process in a cascade…”
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Fibre polarisation state compensation in entanglement-based quantum key distribution by Shi, Yicheng, Poh, Hou Shun, Ling, Alexander, Kurtsiefer, Christian

“…Quantum key distribution (QKD) using polarisation encoding can be hard to implement over deployed telecom fibres because the routing geometry and the…”
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