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Quantum secret sharing
This work shows how GHZ states can be used to split quantum information into two parts so that both parts are necessary to reconstruct the original qubit.
Distribution functions in physics: Fundamentals
Universal state inversion and concurrence in arbitrary dimensions
Wootters [Phys. Rev. Lett. 80, 2245 (1998)] has given an explicit formula for the entanglement of formation of two qubits in terms of what he calls the concurrence of the joint density operator.…
Programmable Quantum Gate Arrays
The processor presented can perform any operation on a single qubit with a certain probability and if the operation is unitary, the probability is in general 1/4, but for more restricted sets of operators the probability can be higher.
The Quantum Theory of Nonlinear Optics
1. Classical nonlinear optics 2. Field quantization 3. Quantized fields in dielectric media 4. Microscopic description of media 5. Coherence and quantum dynamics in simple system 6. Decoherence and…
Entanglement conditions for two-mode states.
This work provides a class of inequalities whose violation shows the presence of entanglement in two-mode systems and shows how the methods used here can be extended to find entangling in systems of more than two modes.
Towards quantum-based privacy and voting
UNIVERSAL OPTIMAL CLONING OF ARBITRARY QUANTUM STATES : FROM QUBITS TO QUANTUM REGISTERS
We present the universal cloning transformation of states in arbitrary-dimensional Hilbert spaces. This unitary transformation attains the optimal fidelity of cloning as specified by Werner [Phys.…
Relations between Coherence and Path Information.
Two relations between coherence and path information in a multipath interferometer are found, an entropic relation in which the path information is characterized by the mutual information between the detector states and the outcome of the measurement performed on them, and the coherence measure is one based on relative entropy.