Quantum cryptography Page 1 Quantum cryptography Nicolas Gisin, Grégoire Ribordy,
Wolfgang Tittel, and Hugo Zbinden Group of Applied Physics, University of Geneva, 1211 …

Richard Feynman's observation that certain quantum mechanical effects cannot be
simulated efficiently on a computer led to speculation that computation in general could be …

High-dimensional photon states (qudits) are pivotal to enhance the information capacity,
noise robustness, and data rates of quantum communications. Time-bin entangled qudits …

An unknown quantum state‖ φ> can be disassembled into, then later reconstructed from,
purely classical information and purely nonclassical Einstein-Podolsky-Rosen (EPR) …

As is well known, operations on one particle of an Einstein-Podolsky-Rosen (EPR) pair
cannot influence the marginal statistics of measurements on the other particle. We …

The counter-intuitive aspects of quantum physics have been for long illustrated by thought
experiments, from Einstein's photon box to Schrödinger's cat. These experiments have now …

The superposition principle plays the most central role in all considerations of quantum
information, and in most of the" gedanken" experiments and even the paradoxes of quantum …

This paper provides necessary and sufficient conditions for constructing a universal
quantum computer over continuous variables. As an example, it is shown how a universal …

We provide limits to practical quantum key distribution, taking into account channel losses, a
realistic detection process, and imperfections in the “qubits” sent from the sender to the …

Using the process of spontaneous parametric down-conversion in a two-crystal geometry,
we have generated a source of polarization-entangled photon pairs that is more than ten …