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Trapped Ion Quantum Computing

Repeat-until-success cubic phase gate for universal continuous-variable quantum computation

arXiv
Authors: Kevin Marshall, Raphael Pooser, George Siopsis, Christian Weedbrook

Year

2014

Paper ID

46171

Status

Preprint

Abstract Read

~2 min

Abstract Words

90

Citations

N/A

Abstract

In order to achieve universal quantum computation using continuous variables, one needs to jump out of the set of Gaussian operations and have a non-Gaussian element, such as the cubic phase gate. However, such a gate is currently very difficult to implement in practice. Here we introduce an experimentally viable 'repeat-until-success' approach to generating the cubic phase gate, which is achieved using sequential photon subtractions and Gaussian operations. We find that our scheme offers benefits in terms of the expected time until success, although we require a primitive quantum memory.

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  • In order to achieve universal quantum computation using continuous variables, one needs to jump out of the set of Gaussian operations and have a non-Gaussian element, such as...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1412.0336 [2] arXiv https://arxiv.org/abs/1412.0336 [3] Publisher https://arxiv.org/abs/1412.0336

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