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A single-crystal source of path-polarization entangled photons at non-degenerate wavelengths
S. Sauge, M. Swillo, M. Tengner +1
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…
Robust quantum cryptography with a heralded single-photon source based on the decoy-state method
Qin Wang, Wei Chen, Guilherme Xavier +7
In this paper, we describe a robust quantum cryptography scheme with a heralded single photon source based on the decoy-state method, which has been shown by numerical simulations…
Entanglement-assisted local transformations between inequivalent classes of three-particle entangled states
Iulia Ghiu, Mohamed Bourennane, Anders Karlsson
We show that bipartite and tripartite entangled states cannot be used as catalysis states to enable local transformations inbetween inequivalent classes of three-particle entangled…
Experimental realization of optimal asymmetric cloning and telecloning via partial teleportation
Zhi Zhao, An-Ning Zhang, Xiao-Qi Zhou +4
We report an experimental realization of both optimal asymmetric cloning and telecloning of single photons by making use of partial teleportation of an unknown state. In the experi…
Quantum and classical correlated imaging
J. Bogdanski, G. Bjork, A. Karlsson
We outline the potential gains of quantum correlated imaging and compare it to classical correlated imaging. As shown earlier by A. Gatti, E. Bambilla, M. Bache, and L. A. Lugiato,…
Security of quantum key distribution using d-level systems
Nicolas J. Cerf, Mohamed Bourennane, Anders Karlsson +1
We consider two quantum cryptographic schemes relying on encoding the key into qudits, i.e. quantum states in a d-dimensional Hilbert space. The first cryptosystem uses two mutuall…