Post-quantum steering is a stronger-than-quantum resource for information processing

Stronger-Than-Quantum Correlations

After an elementary derivation of Bell’ s inequality, classical, quantum mechanical , and stronger-than-quantum correlation functions for 2-particle-systems are discussed. Special functions are investigated which give rise to an extreme violation of Bell’ s inequality by the value of 4. Referring to a specific quantum system it is shown that under certain conditions such an extreme violation wo...

Quantum One-Way Communication is Exponentially Stronger Than Classical Communication

In STOC 1999, Raz presented a (partial) function for which there is a quantum protocol communicating only O(log n) qubits, but for which any classical (randomized, bounded-error) protocol requires poly(n) bits of communication. That quantum protocol requires two rounds of communication. Ever since Raz’s paper it was open whether the same exponential separation can be achieved with a quantum pro...

Possibilities for Quantum Information Processing

This tutorial introduces quantum information science, a quickly developing area of multidisciplinary research. The basic idea of the field is to study physical systems obeying the laws of quantum mechanics to obtain promising possibilities for computation, image processing, data transfer and/or high precision detection. Quantum information science is an intersection of mathematics, physics and ...

Quantum Games Seminar in Quantum Information Processing

Quantum-information processing with circuit quantum electrodynamics

Alexandre Blais, Jay Gambetta, A. Wallraff, D. I. Schuster, S. M. Girvin, M. H. Devoret, and R. J. Schoelkopf Departments of Applied Physics and Physics, Yale University, New Haven, Connecticut 06520, USA Département de Physique et Regroupement Québécois sur les Matériaux de Pointe, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1 Department of Physics, ETH Zurich, CH-8093 Zürich, S...