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Geometric Phases and Topological Quantum Computation
Vlatko Vedral
In the first part of this review we introduce the basics theory behind geometric phases and emphasize their importance in quantum theory. The subject is presented in a general way…
Eavesdropping on practical quantum cryptography
Mark Williamson, Vlatko Vedral
Practical implementations of quantum cryptography use attenuated laser pulses as the signal source rather than single photons. The channels used to transmit are also lossy. Here we…
Classicality of spin-coherent states via entanglement and distinguishability
D. Markham, V. Vedral
We investigate the classical nature of the spin coherent states. In addition to being minimum uncertainty states, as the size of the spin, S, increases, the classical nature is see…
Energy Requirements for Quantum Data Compression and 1-1 Coding
Luke Rallan, Vlatko Vedral
By looking at quantum data compression in the second quantisation, we present a new model for the efficient generation and use of variable length codes. In this picture lossless da…
Classical Correlations and Entanglement in Quantum Measurements
V. Vedral
We analyze a quantum measurement where the apparatus is initially in a mixed state. We show that the amount of information gained in a measurement is not equal to the amount of ent…
Berry's phase in Cavity QED: proposal for observing an effect of field quantization
A. Carollo, M. Franca Santos, V. Vedral
Geometric phases are well known in classical electromagnetism and quantum mechanics since the early works of Pantcharatnam and Berry. Their origin relies on the geometric nature of…