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Gate sequence for continuous variable one-way quantum computation
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DOI：10.1038/ncomms3828.png)
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Abstract
En 中文
Measurement-based one-way quantum computation using cluster states as resources provides an efficient model to perform computation and information processing of quantum codes. Arbitrary Gaussian quantum computation can be implemented sufficiently by long single-mode and two-mode gate sequences. However, continuous variable gate sequences have not been realized so far due to an absence of cluster states larger than four submodes. Here we present the first continuous variable gate sequence consisting of a single-mode squeezing gate and a two-mode controlled-phase gate based on a six-mode cluster state. The quantum property of this gate sequence is confirmed by the fidelities and the quantum entanglement of two output modes, which depend on both the squeezing and controlled-phase gates. The experiment demonstrates the feasibility of implementing Gaussian quantum computation by means of accessible gate sequences.
Keywords:
EXPERIMENTAL GENERATION
TRAPPED IONS
PHASE
STATE
ENTANGLEMENT
MANIPULATION
COMPUTER
QUBITS
SPINS
LASER
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