Demonstrating an element of measurement-based quantum error correction
Quantum Physics
2014-11-13 v2
Abstract
In measurement-based quantum computing an algorithm is performed by measurements on highly-entangled resource states. To date, several implementations were demonstrated, all of them assuming perfect noise-free environments. Here we consider measurement-based information processing in the presence of noise and demonstrate quantum error detection. We implement the protocol using a four-qubit photonic cluster state, where we first encode a general qubit non-locally such that phase errors can be detected. We then read out the error syndrome and analyze the output states after decoding. Our demonstration shows a building block for measurement-based quantum computing which is crucial for realistic scenarios.
Cite
@article{arxiv.1308.5209,
title = {Demonstrating an element of measurement-based quantum error correction},
author = {Stefanie Barz and Rui Vasconcelos and Chiara Greganti and Michael Zwerger and Wolfgang Dür and Hans J. Briegel and Philip Walther},
journal= {arXiv preprint arXiv:1308.5209},
year = {2014}
}