Distributed Quantum Computation over Noisy Channels
نویسندگان
چکیده
J. I. Cirac, A. K. Ekert, S. F. Huelga and C. Macchiavello Institut für Theoretische Physik, Universität Innsbruck, Technikerstrasse 25, A-6020, Innsbruck, Austria. Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, U. K. Optics Section, The Blackett Laboratory, Imperial College, London SW7 2BZ, U. K. Dipartimento di Fisica “A. Volta” and INFM Unità di Pavia, Via Bassi 6, 27100 Pavia, Italy.
منابع مشابه
Secret Sharing Through Noisy Quantum Channels
In a realistic situation, the secret sharing of classical or quantum information will involve the transmission of this information through noisy channels. We consider a three qubit pure state. This state becomes a mixed-state when the qubits are distributed over noisy channels. In the case of a specific noisy channel, the phase-damping channel, we show that the secret sharing of classical infor...
متن کاملSuper - quantum and quantum enhancements of two - sender channels
This thesis studies the consequences of 'super-quantum non-local correlations', which are hypothetical violations of Bell/CHSH inequalities that are stronger more nonlocal than quantum mechanics allows, yet weak enough to respect special relativity in prohibiting faster-than-light communication. Understanding the power of such correlations will yield insight into the non-locality of quantum mec...
متن کاملAlgorithmic Superactivation of Asymptotic Quantum Capacity of Zero-Capacity Quantum Channels
The superactivation of zero-capacity quantum channels makes it possible to use two zero-capacity quantum channels with a positive joint capacity for their output. Currently, we have no theoretical background to describe all possible combinations of superactive zero-capacity channels; hence, there may be many other possible combinations. In practice, to discover such superactive zero-capacity ch...
متن کاملInformation Geometric Superactivation of Asymptotic Quantum Capacity and Classical Zero-Error Capacity of Zero-Capacity Quantum Channels
The superactivation of zero-capacity quantum channels makes it possible to use two zerocapacity quantum channels with a positive joint capacity at the output. Currently, we have no theoretical background for describing all possible combinations of superactive zerocapacity channels; hence, there may be many other possible combinations. In this PhD Thesis I provide an algorithmic solution to the ...
متن کاملUnambiguous unitary quantum channels
Unambiguous unitary maps and unambiguous unitary quantum channels are introduced and some of their properties are derived. These properties ensure certain simple form for the measurements involved in realizing an unambiguous unitary quantum channel. Error correction and unambiguous error correction with nonzero probability are discussed in terms of unambiguous unitary quantum channels. We not o...
متن کامل