期刊
PHYSICAL REVIEW A
卷 84, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.84.062311
关键词
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资金
- Open Research Center
- MEXT, Japan
- JSPS [23540470]
- Grants-in-Aid for Scientific Research [23540470] Funding Source: KAKEN
We propose a simple formalism to design unitary gates robust against given systematic errors. This formalism generalizes our previous observation [Y. Kondo and M. Bando, J. Phys. Soc. Jpn. 80, 054002 (2011)] that vanishing dynamical phase in some composite gates is essential to suppress pulse-length errors. By employing our formalism, we derive a composite unitary gate which can be seen as a concatenation of two known composite unitary operations. The obtained unitary gate has high fidelity over a wider range of error strengths compared to existing composite
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