Bell trajectories for revealing quantum control mechanisms

Eric Dennis, Herschel Rabitz

Research output: Contribution to journalArticlepeer-review


The dynamics induced while controlling quantum systems by optimally shaped laser pulses have often been difficult to understand in detail. A method is presented for quantifying the importance of specific sequences of quantum transitions involved in the control process. The method is based on a “beable” formulation of quantum mechanics due to John Bell that rigorously maps the quantum evolution onto an ensemble of stochastic trajectories over a classical state space. Detailed mechanism identification is illustrated with a model seven-level system. A general procedure is presented to extract mechanism information directly from closed-loop control experiments. Application to simulated experimental data for the model system proves robust with up to 25% noise.

Original languageEnglish (US)
Pages (from-to)10
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number3
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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