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arXiv · 1011.6009

An unconventional geometric phase gate with two nonresonant quantum dots trapped in a photonic crystal cavity

Jian-Qi Zhang·Ya-Fei Yu·Zhi-Ming Zhang
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Abstract

We propose a scheme for realizing a two-qubit controlled phase gate via an unconventional geometric phase with two nonresonant quantum dots trapped in a photonic crystal cavity. In this system, the quantum dots simultaneously interact with a large detuned cavity mode and strong driving classical light fields. During the gate operation, the quantum dots undergo no transitions, while the cavity mode is displaced along a closed path in the phase space. In this way, the system can acquire geometric phases conditional upon the states of the quantum dots. After implementing single-qubit operations, a two-qubit controlled phase gate can be constructed.

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Jian-Qi Zhang, Ya-Fei Yu, Zhi-Ming Zhang. 2010-11-28. An unconventional geometric phase gate with two nonresonant quantum dots trapped in a photonic crystal cavity. https://doi.org/10.1364/josab.28.001959

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