Quantum controlled phase gate based on two nonresonant quantum dots trapped in two coupled photonic crystal cavities

Details Quantum controlled phase gate based on two nonresonant quantum dots trapped in two coupled photonic crystal cavities Quantum controlled phase gate based on two nonresonant quantum dots trapped in two coupled photonic crystal cavities

2010-12-04

arxiv.org/abs/1012.0928v3

Physics

Quantum Physics

5 pages,1 figure The realizability in the experiment is complemented

Scientific paper

We propose a scheme for realizing two-qubit quantum phase gates with two nonidentical quantum dots trapped in two coupled photonic crystal cavities and driven by classical laser fields. During the gate operation, neither the cavity modes nor the quantum dots are excited, so the decoherence can be suppressed. The system can acquire a phase conditional upon the states of the quantum dots, which can be used to realize the controlled phase gate.

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