Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Boileau J.-P."'
Publikováno v:
EPJ Web of Conferences, Vol 6, p 30004 (2010)
The paper presents a two-color digital holographic interferometer. The set-up is devoted to the study of the fundamental dynamic of unconsolidated materials. Optical configuration and algorithms to recover the optical phase of two-color digitally enc
Externí odkaz:
https://doaj.org/article/bb8cacf3edc149229742cc4f0898d5ef
Publikováno v:
J. Math. Phys. 49, 032105 (2008)
We give a convenient representation for any map that is covariant with respect to an irreducible representation of SU(2), and use this representation to analyze the evolution of a quantum directional reference frame when it is exploited as a resource
Externí odkaz:
http://arxiv.org/abs/0709.0142
Publikováno v:
PRA 75, 012331 (2007)
Quantum error correcting codes have been shown to have the ability of making quantum information resilient against noise. Here we show that we can use quantum error correcting codes as diagnostics to characterise noise. The experiment is based on a t
Externí odkaz:
http://arxiv.org/abs/quant-ph/0610038
Autor:
Chen, Teng-Yun, Zhang, Jun, Boileau, J. -C., Jin, Xian-Min, Yang, Bin, Zhang, Qiang, Yang, Tao, Laflamme, R., Pan, Jian-Wei
Publikováno v:
Phys.Rev.Lett. 96, 150504 (2006)
We present an experimental realization of a robust quantum communication scheme [Phys. Rev. Lett. 93, 220501 (2004)] using pairs of photons entangled in polarization and time. Our method overcomes errors due to collective rotation of the polarization
Externí odkaz:
http://arxiv.org/abs/quant-ph/0605206
Publikováno v:
Physical Review A 72, 062317 (2005)
We present an experimental implementation of the coined discrete time quantum walk on a square using a three qubit liquid state nuclear magnetic resonance (NMR) quantum information processor (QIP). Contrary to its classical counterpart, we observe co
Externí odkaz:
http://arxiv.org/abs/quant-ph/0507267
Publikováno v:
Phys. Rev. A 72, 032321 (2005)
We discuss the potential of quantum key distribution (QKD) for long distance communication by proposing a new analysis of the errors caused by dark counts. We give sufficient conditions for a considerable improvement of the key generation rates and t
Externí odkaz:
http://arxiv.org/abs/quant-ph/0502140
Publikováno v:
Phys. Rev. Lett. 94 040503 (2005)
Quantum key distribution (QKD) protocols are cryptographic techniques with security based only on the laws of quantum mechanics. Two prominent QKD schemes are the BB84 and B92 protocols that use four and two quantum states, respectively. In 2000, Pho
Externí odkaz:
http://arxiv.org/abs/quant-ph/0408085
Publikováno v:
Phys. Rev. Lett. 93, 220501 (2004)
Noise and imperfection of realistic devices are major obstacles for implementing quantum cryptography. In particular birefringence in optical fibers leads to decoherence of qubits encoded in polarization of photon. We show how to overcome this proble
Externí odkaz:
http://arxiv.org/abs/quant-ph/0406118
Publikováno v:
Phys. Rev. Lett. 92, 17901 (2004)
We present two polarization-based protocols for quantum key distribution. The protocols encode key bits in noiseless subspaces or subsystems, and so can function over a quantum channel subjected to an arbitrary degree of collective noise, as occurs,
Externí odkaz:
http://arxiv.org/abs/quant-ph/0306199
Akademický článek
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