Výsledky vyhledávání - "Christensen, Bradley"

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Experimentally Generated Randomness Certified by the Impossibility of Superluminal Signals

Autor: Bierhorst, Peter, Knill, Emanuel, Glancy, Scott, Zhang, Yanbao, Mink, Alan, Jordan, Stephen, Rommal, Andrea, Liu, Yi-Kai, Christensen, Bradley, Nam, Sae Woo, Stevens, Martin J., Shalm, Lynden K.

Publikováno v: Nature 556:223-226 (2018)

From dice to modern complex circuits, there have been many attempts to build increasingly better devices to generate random numbers. Today, randomness is fundamental to security and cryptographic systems, as well as safeguarding privacy. A key challe

Externí odkaz: http://arxiv.org/abs/1803.06219

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An advanced active quenching circuit for ultra-fast quantum cryptography

Autor: Stipčević, Mario, Christensen, Bradley G., Kwiat, Paul G., Gauthier, Daniel J.

Publikováno v: Opt. Express 25, 21861-21876 (2017)

Commercial photon-counting modules based on actively quenched solid-state avalanche photodiode sensors are used in a wide variety of applications. Manufacturers characterize their detectors by specifying a small set of parameters, such as detection e

Externí odkaz: http://arxiv.org/abs/1706.06628

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Experimentally Generated Random Numbers Certified by the Impossibility of Superluminal Signaling

Autor: Bierhorst, Peter, Knill, Emanuel, Glancy, Scott, Mink, Alan, Jordan, Stephen, Rommal, Andrea, Liu, Yi-Kai, Christensen, Bradley, Nam, Sae Woo, Shalm, Lynden K.

Random numbers are an important resource for applications such as numerical simulation and secure communication. However, it is difficult to certify whether a physical random number generator is truly unpredictable. Here, we exploit the phenomenon of

Externí odkaz: http://arxiv.org/abs/1702.05178

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A strong loophole-free test of local realism

Publikováno v: Phys. Rev. Lett. 115, 250402 (2015)

We present a loophole-free violation of local realism using entangled photon pairs. We ensure that all relevant events in our Bell test are spacelike separated by placing the parties far enough apart and by using fast random number generators and hig

Externí odkaz: http://arxiv.org/abs/1511.03189

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A Time-Multiplexed Heralded Single-Photon Source

Autor: Kaneda, Fumihiro, Christensen, Bradley G., Wong, Jia Jun, McCusker, Kevin T., Park, Hee Su, Kwiat, Paul G.

Photons have proven to be excellent carriers of quantum information, and play essential roles in numerous quantum information processing (QIP) applications. In particular, heralded single- photon sources via spontaneous parametric-down conversion (SP

Externí odkaz: http://arxiv.org/abs/1507.06052

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Exploring the limits of quantum nonlocality with entangled photons

Autor: Christensen, Bradley G., Liang, Yeong-Cherng, Brunner, Nicolas, Gisin, Nicolas, Kwiat, Paul G.

Publikováno v: Phys. Rev. X 5, 041052 (2015)

Quantum nonlocality is arguably among the most counter-intuitive phenomena predicted by quantum theory. In recent years, the development of an abstract theory of nonlocality has brought a much deeper understanding of the subject. In parallel, experim

Externí odkaz: http://arxiv.org/abs/1506.01649

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