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Q: Fachverband Quantenoptik und Photonik

Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology

Q 16.12: Poster

Montag, 17. März 2014, 16:30–18:30, Spree-Palais

Quantum Error Correction for Optical Continuous-Variable Cluster Computation — •Alexander Roth and Peter van Loock — Institut für Physik, Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany

Quantum computing with optical continuous variables (CV) [1] shows high potential and the creation of an ultra-large cluster state [2] has now been demonstrated. Logical Qubits encoded in physical CV states enables quantum error correction. The finite squeezing of the CV-states acts like an amplitude-damping channel during teleportation [3], and makes quantum error correction even more necessary.

This work looks at efficient quantum error correction codes to protect the logical Qubits against the amplitude-damping channel to lower the required squeezing, and to make CV cluster computing experimentally more viable.

[1] N. C. Menicucci et al., Phys.Rev.Lett. 97, 110501 (2006)

[2] S. Yokoyama et al., arXiv 1306.3366 (2013)

[3] H. F. Hofmann et al., Phys.Rev.A 64, 040301 (2001)