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Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 40: Quantum Information: Quantum Computing

Q 40.9: Vortrag

Mittwoch, 10. März 2010, 18:30–18:45, F 128

Go vs. no-go -- potential and limitations of continuous-variable quantum computing by measurements — •Matthias Ohliger, Konrad Kieling, and Jens Eisert — University of Potsdam, 14476 Potsdam, Germany

In this talk, we will explore the feasibility of quantum computation using continuous-variable systems by means of local measurements only. In the first part of the talk, we will identify crucial limitations that arise when starting from Gaussian cluster states. This will be done by resorting to a Gaussian projected entangled pair picture as well as to notions of continuous-variable quantum repeater networks. In the second part, we will look at instances in which these limitations can be overcome, and how suitable encodings of qubits in oscillators and feasible non-Gaussian resource states give rise to universal schemes for quantum computing.

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