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arXiv · 1709.08580

Generating Grid States From Schr\"odinger Cat States without Post-Selection

Daniel J. Weigand·Barbara M. Terhal
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Abstract

Grid (or comb) states are an interesting class of bosonic states introduced by Gottesman, Kitaev and Preskill to encode a qubit into an oscillator. A method to generate or `breed' a grid state from Schr\"odinger cat states using beam splitters and homodyne measurements is known, but this method requires post-selection. In this paper we show how post-processing of the measurement data can be used to entirely remove the need for post-selection, making the scheme much more viable. We bound the asymptotic behavior of the breeding procedure and demonstrate the efficacy of the method numerically.

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Daniel J. Weigand, Barbara M. Terhal. 2017-09-25. Generating Grid States From Schr\"odinger Cat States without Post-Selection. https://doi.org/10.1103/physreva.97.022341

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