期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.190403
关键词
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资金
- ERC through the QGBE grant
- Autonomous Province of Trento, Call Grandi Progetti, project On silicon chip quantum optics for quantum computing and secure communications - SiQuro
The Berry curvature is a geometrical property of an energy band which acts as a momentum space magnetic field in the effective Hamiltonian describing single-particle quantum dynamics. We show how this perspective may be exploited to study systems directly relevant to ultracold gases and photonics. Given the exchanged roles of momentum and position, we demonstrate that the global topology of momentum space is crucially important. We propose an experiment to study the Harper-Hofstadter Hamiltonian with a harmonic trap that will illustrate the advantages of this approach and that will also constitute the first realization of magnetism on a torus.
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