Continual Measurements in Quantum Mechanics and Quantum Stochastic Calculus

1 Introduction 31.1 Three approaches to continual measurements 31.2 Quantum stochastic calculus and quantum optics 31.3 Some notations: operator spaces 42 Unitary evolution and states 52.1 Quantum stochastic calculus 5The Fock space 5The Weyl operators and the Bose fields 6Quantum stochastic integrals 92.2 The unitary system–field evolution 13The Hudson–Parthasarathy equation 13The Hamiltonian evolution 152.3 The system–field state 192.4 The reduced dynamics 21System observables in the Heisenberg picture 21The master equation 222.5 Physical basis of the use of QSC 23The quasi–monochromatic paraxial approximation of theelectromagnetic field 23Approximations in the system–field interaction 243 Continual measurements 253.1 Indirect measurements on S

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