Optimal Controlled teleportation via several kinds of three-qubit states

Optimal conversion of non--local unitary operations

Optimal cooling of a driven artificial atom in dissipative environment

Optimal copying of entangled two-qubit states

Optimal Copying of One Quantum Bit

Optimal correction of concatenated fault-tolerant quantum codes

Optimal correlations in many-body quantum systems

Optimal counterfeiting attacks and generalizations for Wiesner's quantum money

Optimal coupling of entangled photons into single-mode optical fibers

Optimal Covariant Measurement of Momentum on a Half Line in Quantum Mechanics

Optimal covariant measurements: the case of a compact symmetry group and phase observables

Optimal covariant quantum networks

Optimal Creation of Entanglement Using a Two--Qubit Gate

Optimal data processing for quantum measurements

Optimal Database Search: Waves and Catalysis

Optimal Decoherence Control in non-Markovian Open, Dissipative Quantum Systems

Optimal decomposable witnesses without the spanning property

Optimal dense coding with arbitrary pure entangled states

Optimal dense coding with mixed state entanglement

Optimal Detection of Entanglement in GHZ States