Upper Bounds on the Quantum Capacity of Some Two-Qubit Channels

Upper bounds on the relative energy difference of pure and mixed Gaussian states with a fixed fidelity

Upper Bounds on the Size of Quantum Codes

Upper quantum Lyapunov Exponent and Anosov relations for quantum systems driven by a classical flow

Use of a Quantum Computer and the Quick Medical Reference To Give an Approximate Diagnosis

Use of a Quantum Computer to do Importance and Metropolis-Hastings Sampling of a Classical Bayesian Network

Use of composite rotations to correct systematic errors in NMR quantum computation

Use of dynamical coupling for improved quantum state transfer

Use of Lambert's Theorem for the n-Dimensional Coulomb Problem

Use of Mathematical Logical Concepts in Quantum Mechanics: An Example

Use of non-adiabatic geometric phase for quantum computing by nuclear magnetic resonance

Use of Quadrupolar Nuclei for Quantum Information processing by Nuclear Magnetic Resonance: Implementation of a Quantum Algorithm

Use of Quantum Sampling to Calculate Mean Values of Observables and Partition Function of a Quantum System

Useful entanglement can be extracted from all nonseparable states

Useful entanglement from the Pauli principle

Useful Multiparticle Entanglement and Sub-Shot-Noise Sensitivity in Experimental Phase Estimation

Useful multipartite correlations from useless reduced states

Useful transformations: from ion-laser interactions to master equations

Usefulness classes of travelling entangled channels in noninertial frames

Usefulness of classical communication for local cloning of entangled states