Control and Dynamic Approach to Robust Quantum Computing
Final rept. 12 May 2003-31 Dec 2006
CALIFORNIA INST OF TECH PASADENA OFFICE OF SPONSORED RESEARCH
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During the entire performance period, from 12 May 2003 through 31 December 2006, we have conducted theoretical and computational research on quantum control problems central to quantum computation. In particular we completed a thorough and rigorous analysis of feedback-stabilization of entangled state preparation with atomic hyperfine spins, based on continuous Faraday rotation measurement and feedback via global magnetic fields. We connected three distinct layers of modeling, from Hamiltonian dynamics quantum field theory to quantum trajectory models to nonlinear stochastic control theory. We also initiated work on a control-theoretic description of quantum memories based on stabilizer coding and continuous syndrome measurement.
- Quantum Theory and Relativity