Orthogonal measurements are {\it almost} sufficient for quantum discord of two qubits

Orthogonal polynomial solutions to the non-central modified Kratzer potential

Orthogonal polynomials defined by hypergeometric type equations with application to quantum mechanics

Orthogonal polynomials induced by discrete-time quantum walks in one dimension

Orthogonality and Boundary Conditions in Quantum Mechanics

Orthogonality And Distinguishability: Criterion For Local Distinguishability of Arbitrary Orthogonal States

Orthogonality catastrophe as a consequence of qubit embedding in an ultra-cold Fermi gas

Orthogonality of Biphoton Polarization States

Orthogonality relations in Quantum Tomography

Orthomodular Lattices and a Quantum Algebra

Orthomodular-valued models for quantum set theory

Orthopositronium: "On the possible relation of gravity to electricity"

Orthopositronium: Annihilation of positron in gaseous neon

Oscillating decay of an unstable system

Oscillation dynamics of multi-well condensates

Oscillation structures in the spontaneous emission rate of an atom in a medium with refractive index n between mirrors: a solvable model

Oscillations in Quantum Entanglement During Rescattering

Oscillations of the purity in the repeated-measurement-based generation of quantum states

Oscillator model for dissipative QED in an inhomogeneous dielectric

Oscillator model for the relativistic fermion-boson system