期刊
PHYSICAL REVIEW B
卷 91, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.91.201404
关键词
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资金
- Packard Foundation
- Institute for Quantum Information and Matter
- NSF Physics Frontiers Center
- USDOE through LANL/LDRD program
- NSERC
- CIfAR
- Max Planck-UBC Centre for Quantum Materials
- Helmholtz Virtual Institute New states of matter and their excitations
- Deutsche Forschungsgemeinschaft [SPP1285]
- Gordon and Betty Moore Foundation [GBMF1250]
Braiding of Majorana zero modes provides a promising platform for quantum information processing, which is topologically protected against errors. Strictly speaking, however, the scheme relies on infinite braiding times as it utilizes the adiabatic limit. Here we show how to minimize nonadiabatic errors for finite braiding times by finding an optimal protocol for the Majorana movement. Interestingly, these protocols are characterized by sharp transitions between Majorana motion at maximal and minimal velocities. We find that these so-called bang-bang protocols can minimize the nonadiabatic transitions of the system by orders of magnitude in comparison with naive protocols.
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