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Trapped Ion Quantum Computing
Quantum Filtering of Optical Coherent States
arXiv
Authors: C. Wittmann, D. Elser, U. L. Andersen, R. Filip, P. Marek, G. Leuchs
Year
2007
Paper ID
50561
Status
Preprint
Abstract Read
~2 min
Abstract Words
85
Citations
N/A
Abstract
We propose and experimentally demonstrate non-destructive and noiseless removal (filtering) of vacuum states from an arbitrary set of coherent states of continuous variable systems. Errors i.e. vacuum states in the quantum information are diagnosed through a weak measurement, and on that basis, probabilistically filtered out. We consider three different filters based on on/off detection phase stabilized and phase randomized homodyne detection. We find that on/off etection, optimal in the ideal theoretical setting, is superior to the homodyne strategy in a practical setting.
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- We propose and experimentally demonstrate non-destructive and noiseless removal (filtering) of vacuum states from an arbitrary set of coherent states of continuous variable...
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