Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Jachura, Michał"'
Publikováno v:
Opt. Express 29, 43091-43103 (2021)
We analyze theoretically optimal operation of an optical key distribution (OKD) link based on fine intensity modulation of an optical signal transmitted over an attenuating channel to a direct detection receiver. With suitable digital postprocessing,
Externí odkaz:
http://arxiv.org/abs/2109.12335
Publikováno v:
J. Lightwave Technol. 38(10), 2741-2754 (2020)
This tutorial reviews the Holevo capacity limit as a universal tool to analyze the ultimate transmission rates in a variety of optical communication scenarios, ranging from conventional optically amplified fiber links to free-space communication with
Externí odkaz:
http://arxiv.org/abs/2002.05766
Publikováno v:
Proc. SPIE 10910, Free-Space Laser Communication and Atmospheric Propagation XXXI, 109100A (4 March 2019)
The information capacity of an optical channel under power constraints is ultimately limited by the quantum nature of transmitted signals. We discuss currently available and emerging photonic technologies whose combination can be shown theoretically
Externí odkaz:
http://arxiv.org/abs/1902.03654
Publikováno v:
Proc. SPIE 10524, Free-Space Laser Communication and Atmospheric Propagation XXX, 105240A (15 February 2018)
We investigate theoretically the efficiency of deep-space optical communication in the presence of background noise. With decreasing average signal power spectral density, a scaling gap opens up between optimized simple-decoded pulse position modulat
Externí odkaz:
http://arxiv.org/abs/1801.03947
Autor:
Banaszek, Konrad, Jachura, Michał
Publikováno v:
Proceedings of the 2017 IEEE International Conference on Space Optical Systems and Applications (ICSOS), Naha, Okinawa, Japan, pp. 34-37
We discuss conceptual designs for structured optical receivers that can alleviate the requirement for high peak-to-average power ratio in photon-starved optical communication. The basic idea is to transmit sequences of suitably modulated coherent lig
Externí odkaz:
http://arxiv.org/abs/1711.02521
Publikováno v:
Phys. Rev. Lett. 120, 110502 (2018)
Many quantum information protocols rely on optical interference to compare datasets with efficiency or security unattainable by classical means. Standard implementations exploit first-order coherence between signals whose preparation requires a share
Externí odkaz:
http://arxiv.org/abs/1710.04672
Publikováno v:
Optics Express, Vol. 25, Issue 22, pp. 27475-27487 (2017)
We present a quantum fingerprinting protocol relying on two-photon interference which does not require a shared phase reference between the parties preparing optical signals carrying data fingerprints. We show that the scaling of the protocol, in ter
Externí odkaz:
http://arxiv.org/abs/1710.02336
Publikováno v:
J. Mod. Opt. 65, 262--267 (2018)
We present an optical method to measure radio-frequency electro-optic phase modulation profiles by employing spectrum-to-time mapping realized by highly chirped optical pulses. We directly characterize temporal phase modulation profiles of up to 12.5
Externí odkaz:
http://arxiv.org/abs/1706.09881
Autor:
Jachura, Michał, Karpiński, Michał, Banaszek, Konrad, Bharadwaj, Divya, Lugani, Jasleen, Thyagarajan, K.
Publikováno v:
Phys. Rev. A 95, 032322 (2017)
We analyze theoretically spontaneous parametric down-conversion in a multimode nonlinear waveguide as a source of entangled pairs of spatial qubits, realized as superpositions of a photon in two orthogonal transverse modes of the waveguide. It is sho
Externí odkaz:
http://arxiv.org/abs/1701.05769
Akademický článek
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