article 38 Quantum theory 30 Quantum optics 26 Photons 18 TJ Mechanical engineering and machinery 18 Topology 18 Density functional theory 16 human 16 Electronic structure 15 Ground state 15 Quantum entanglement 15 Dynamics 14 Graphene 14 'current 13 Property 13 Hamiltonians 12 Humans 12 Measurements of 12 Qubits 12 Binary alloys 11 Calculations 11 Two-dimensional 11 Bosons 10 Condition 10 Electric fields 10 Electronic.structure 10 Energy 10 Hermitians 10 Monte Carlo methods 10 Quantum chemistry 10