Southwest Quantum Information and TechnologyEleventh Annual Meeting, February 19-22, 2009
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All Abstracts | Poster Abstracts | Talk Abstracts | Tutorial Abstracts Precision Metrology using Double-Pass Continuous Quantum MeasurementBen Baragiola, University of New Mexico (Session 5 : Friday from 5:00-7:00) Abstract. We summarize an ongoing study of continuously measured double-pass quantum systems relevant for quantum-limited metrology. Numerical calculations of the quantum Fisher information for the exact quantum filter indicate improved uncertainty scaling over single-pass geometry, yet quantum Kalman filters show no enhancement. We investigate other approximate filters which we hope will close this gap. |