Quantum Trajectory Theory
= Quantum Trajectory Theory
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= Quantum-trajectory unravelling
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A quantum-trajectory unravelling represents a <Lindblad equation> as an ensemble of stochastic pure-state histories. In one jump unravelling, a state evolves between jumps under the non-Hermitian effective Hamiltonian $H_{\rm eff}=H-\frac i2\sum_\alpha L_\alpha^\dagger L_\alpha$, while a jump of type $\alpha$ sends it to a normalized multiple of $L_\alpha|\psi\rangle$.