Zobrazeno 1 - 10
of 6 066
pro vyhledávání: '"Vogel, W."'
Publikováno v:
Phys. Rev. A 109, 033712 (2024)
Efficient transfer of quantum information between remote parties is a crucial challenge for quantum communication over atmospheric channels. Random fluctuations of the channel transmittance are a major disturbing factor for its practical implementati
Externí odkaz:
http://arxiv.org/abs/2311.07730
Publikováno v:
Phys. Rev. A 109, 013701 (2024)
The widely used experimental technique of continuous-wave detection assumes counting pulses of photocurrent from a click-type detector inside a given measurement time window. With such a procedure we miss out the photons detected after each photocurr
Externí odkaz:
http://arxiv.org/abs/2303.14246
Publikováno v:
Phys. Rev. A 105, 063722 (2022)
We analyze nonclassical correlations between outcomes of measurements conducted on two spatial radiation modes. These correlations cannot be simulated with statistical mixtures of coherent states or, more generally, with non-negative phase-space func
Externí odkaz:
http://arxiv.org/abs/2112.07021
Publikováno v:
Phys. Rev. Lett. 126, 170404 (2021)
Dissimilar notions of quantum correlations have been established, each being motivated through particular applications in quantum information science and each competing for being recognized as the most relevant measure of quantumness. In this contrib
Externí odkaz:
http://arxiv.org/abs/2010.03490
Autor:
Sperling, J., Vogel, W.
Publikováno v:
Phys. Scr. 95, 034007 (2020)
We study the quasiprobability representation of quantum light, as introduced by Glauber and Sudarshan, for the unified characterization of quantum phenomena. We begin with reviewing the past and current impact of this technique. Regularization and co
Externí odkaz:
http://arxiv.org/abs/1907.12427
Autor:
Sperling, J., Phillips, D. S., Bulmer, J. F. F., Thekkadath, G. S., Eckstein, A., Wolterink, T. A. W., Lugani, J., Nam, S. W., Lita, A., Gerrits, T., Vogel, W., Agarwal, G. S., Silberhorn, C., Walmsley, I. A.
Publikováno v:
Phys. Rev. Lett. 124, 013605 (2020)
The representation of quantum states via phase-space functions constitutes an intuitive technique to characterize light. However, the reconstruction of such distributions is challenging as it demands specific types of detectors and detailed models th
Externí odkaz:
http://arxiv.org/abs/1904.10893
Publikováno v:
Phys. Scr. 94 125104 (2019)
We study the Kimble-Braunstein continuous-variable quantum teleportation with the quantum channel physically realized in the turbulent atmosphere. In this context, we examine the applicability of different strategies preserving the Gaussian entanglem
Externí odkaz:
http://arxiv.org/abs/1901.07794
Publikováno v:
Phys. Rev. A 99, 053830 (2019)
The establishment of quantum communication links over a global scale is enabled by satellite nodes. We examine the influence of Earth's atmosphere on the performance of quantum optical communication channels with emphasis on the downlink scenario. We
Externí odkaz:
http://arxiv.org/abs/1901.07452
Akademický článek
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Publikováno v:
Proc. of SPIE 10771, 107710V (2018)
Many fundamental and applied experiments in quantum optics require transferring nonclassical states of light through large distances. In this context the free-space channels are a very promising alternative to optical fibers as they are mobile and en
Externí odkaz:
http://arxiv.org/abs/1810.05700