Fast and noise-resistant implementation of quantum phase gates and creation of quantum entangled states

By Ye‐Hong Chen, Yan Xia, Qing-qin Chen, Jie Song. 2014

134 citations recorded by the source corpus.

The "Lewis-Riesenfeld phases" which plays a crucial role in constructing shortcuts to adiabaticity may be a resource for the implementation of quantum phase gates. By combining "Lewis-Riesenfeld invariant" with "quantum Zeno dynamics", we propose an effective scheme of rapidly implementing $\pi$ phase gates via constructing shortcuts to adiabatic passage in a two-distant-atom-cavity system. The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity is discussed. It is noted that this scheme is insensitive to both two error sources. Additionally, a creation of N-atom cluster states is put forward as a typical example of the applications of the fast and noise-resistant phase gates. The study results show that the shortcuts idea is not only applicable in other logic gates with different systems, but also propagable for many quantum information tasks.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/c4bd438d547939a87d095dbc6501234cbea51fcb

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Shortcuts to adiabaticity: Concepts, methods, and applications (2019, methodology): “For example, invariant-based inverse engineering was used to develop Toffoli gates (Song et al., 2014), phase gates (Chen et al., 2015a; Liang et al., 2015d), CNOT gates (Liang et al., 2015b), or SWAP gates (Liang et al., 2015a).”