Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Maria Tengner"'
Publikováno v:
Physical Review Letters. 111
Entanglement is essential to many quantum information applications, but it is easily destroyed by quantum decoherence arising from interaction with the environment. We report the first experimental demonstration of an entanglement-based protocol that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3fc7ef7ad68f6c328d44a05499259cf
https://doi.org/10.1103/physrevlett.111.010501
https://doi.org/10.1103/physrevlett.111.010501
Publikováno v:
CLEO:2011 - Laser Applications to Photonic Applications.
A two-way entanglement-based communication protocol resilient to high loss and noise is implemented. Even though the entanglement is lost during transmission, efficient communication that is secure against passive eavesdropping is possible.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5849ef06fd39eff342e6cc4085c9af03
https://doi.org/10.1364/qels.2011.qtht6
https://doi.org/10.1364/qels.2011.qtht6
We demonstrate a bright, narrowband, compact, quasi-phase-matched single-crystal source generating path-polarization-entangled photon pairs at 810 nm and 1550 nm at a maximum rate of 3 Mcounts/(s THz mW) after coupling to single-mode fiber, and with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb7edb2c6be6a446119ef0459eb4ed62
http://arxiv.org/abs/0806.2842
http://arxiv.org/abs/0806.2842
Autor:
Qin Wang, Zheng-Fu Han, Guang-Can Guo, Wei Chen, Guilherme B. Xavier, Sebastien Sauge, Anders Karlsson, Tao Zhang, Marcin Swillo, Maria Tengner
Publikováno v:
Physical Review Letters. 100
We have experimentally demonstrated a decoy-state quantum key distribution scheme (QKD) with a heralded single-photon source based on parametric down-conversion. We used a one-way Bennett-Brassard 1984 protocol with a four states and one-detector pha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef368db37497b6facfcc1da167dbb4e7
https://doi.org/10.1103/physrevlett.100.090501
https://doi.org/10.1103/physrevlett.100.090501
Autor:
J. Waldeback, Marcin Swillo, Guilherme B. Xavier, Sebastien Sauge, Sebastian Albert-Seifried, Daniel Ljunggren, Anders Karlsson, Q. Wang, Maria Tengner
Publikováno v:
2007 9th International Conference on Transparent Optical Networks.
We discuss recent work in quantum communication, and in some details present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm. We also show how the single-phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf31e21be93d6b209e4ee221a6937d8b
https://doi.org/10.1109/icton.2007.4296023
https://doi.org/10.1109/icton.2007.4296023
Publikováno v:
SPIE Proceedings.
We present two types of photon sources designed for secure quantum communication, e.g. for quantum cryptography. Both types are based on the creation of photon pairs by spontaneous parametric downconversion in nonlinear crystals. The first is a heral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddba73d56ec87cec0f9f62df22242819
https://doi.org/10.1117/12.689780
https://doi.org/10.1117/12.689780
Autor:
Daniel Ljunggren, Maria Tengner
Publikováno v:
Physical Review A. 72
We present a theoretical and experimental investigation of the emission characteristics and the flux of photon pairs generated by spontaneous parametric downconversion in quasi-phase matched bulk crystals for the use in quantum communication sources.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc43440624d6d459ee30093c6538253e
https://doi.org/10.1103/physreva.72.062301
https://doi.org/10.1103/physreva.72.062301
We report new results regarding a source of polarization entangled photon-pairs created by the process of spontaneous parametric downconversion in two orthogonally oriented, periodically poled, bulk KTiOPO4 crystals (PPKTP). The source emits light co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaac8d2aa95fe4bc2dd58274125c934a
http://arxiv.org/abs/quant-ph/0510218
http://arxiv.org/abs/quant-ph/0510218
Publikováno v:
AIP Conference Proceedings.
We extend our earlier results of a bright source of non‐degenerate polarization entangled photon‐pairs by making a thorough theoretical and experimental investigation of its single‐mode emission and state‐decoherence. Using two perpendicular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad117e89d8e3c8aa4f374c2c2f6e5ad3
https://doi.org/10.1063/1.1834452
https://doi.org/10.1063/1.1834452
Autor:
Anders Karlsson, Maria Tengner, P.A. Marsden, Matthew Pelton, Fredrik Laurell, Daniel Ljunggren, Carlota Canalias, Anna Fragemann
Publikováno v:
Optics Express. 12:3573
We use two perpendicular crystals of periodically-poled KTP to directly generate polarization-entangled photon pairs, the majority of which are emitted into a single Gaussian spatial mode. The signal and idler photons have wavelengths of 810 nm and 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d956ddcf6f3c81e20a5c82f7d08ef511
https://doi.org/10.1364/opex.12.003573
https://doi.org/10.1364/opex.12.003573