Results 11 to 20 of about 2,422 (38)
A robust quantum receiver for phase shift keyed signals
New Journal of Physics, 2015 The impossibility of perfectly discriminating non-orthogonal quantum states imposes far-reaching consequences both on quantum and classical communication schemes.
C R Müller, Ch Marquardt
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Atmospheric continuous-variable quantum communication
New Journal of Physics, 2014 We present a quantum communication experiment conducted over a point-to-point free-space link of 1.6 km in urban conditions. We study atmospheric influences on the capability of the link to act as a continuous-variable (CV) quantum channel.
B Heim +6 more
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Preserving information from the beginning to the end of time in a Robertson–Walker spacetime
New Journal of Physics, 2014 Preserving information stored in a physical system subjected to noise can be modeled in a communication-theoretic paradigm, in which storage and retrieval correspond to an input encoding and output decoding, respectively.
Stefano Mancini +2 more
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Improving the capacity of the ping-pong protocol
, 2003 We present a quantum communication protocol which keeps all the properties of the ping-pong protocol [Phys. Rev. Lett. 89, 187902 (2002)] but improves the capacity doubly as the ping-pong protocol.
A. Beige +4 more
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Noise effects on One-Pauli Channels [PDF]
, 1999 The possibility of stochastic resonance of a quantum channel and hence the noise enhanced quantum channel capacity is explored by considering one-Pauli channels which are more classical like.
Barnum +13 more
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New Journal of Physics, 2014 We describe a procedure by which a long ( $\gtrsim 1\,\text{km}$ ) optical path through atmospheric turbulence can be experimentally simulated in a controlled fashion and scaled down to distances easily accessible in a laboratory setting.
Brandon Rodenburg +8 more
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Information Erasure and Recover in Quantum Memory
, 2004 We show that information in quantum memory can be erased and recovered perfectly if it is necessary. That the final states of environment are completely determined by the initial states of the system allows that an easure operation can be realized by a ...
Bennett C H +10 more
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The Unitary Transformation in Quantum Teleportation [PDF]
, 2006 In the well known treatment of quantum teleportation, the receiver should convert the state of his EPR particle into the replica of the unknown quantum state by one of four possible unitary transformations.
Wang, Zheng-Chuan
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Comment on "Secure direct communication with a quantum one-time pad"
, 2004 In the paper [Phys. Rev. A \textbf{69}, 052319 (2004)], a quantum direct communication protocol is proposed which is claimed to be unconditionally secure even for the case of a noisy channel.
Bostroem, K. +2 more
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Reply to "Comment on 'Semiquantum-key distribution using less than four quantum states' "
, 2010 Recently Boyer and Mor pointed out the first conclusion of Lemma 1 in our original paper is not correct, and therefore, the proof of Theorem 5 based on Lemma 1 is wrong.
C. H. Bennett, Daowen Qiu, Xiangfu Zou
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