Journal
PHYSICAL REVIEW X
Volume 7, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.7.041008
Keywords
-
Categories
Funding
- Department of Energy, Office of Basic Energy Science, Materials Science and Engineering Division
- National Science Foundation (NSF) [DMR-1410435]
- Institute of Quantum Information and Matter
- NSF Frontier center - Gordon and Betty Moore Foundation
- Packard Foundation
- STC Center for Integrated Quantum Materials, NSF [DMR-1231319]
- National Science Foundation [NSF PHY-1125915]
- NSF [1066293]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125565] Funding Source: National Science Foundation
Ask authors/readers for more resources
When a physical system is subjected to a strong external multifrequency drive, its dynamics can be conveniently represented in the multidimensional Floquet lattice. The number of Floquet lattice dimensions equals the number of irrationally-related drive frequencies, and the evolution occurs in response to a built-in effective electric field, whose components are proportional to the corresponding drive frequencies. The mapping allows us to engineer and study temporal analogs of many real-space phenomena. Here, we focus on the specific example of a two-level system under a two-frequency drive that induces topologically nontrivial band structure in the 2D Floquet space. The observable consequence of such a construction is the quantized pumping of energy between the sources with frequencies omega(1) and omega(2). When the system is initialized into a Floquet band with the Chern number C, the pumping occurs at a rate P-12 = -P-21 = (C/2 pi) h omega(1)omega(2), an exact counterpart of the transverse current in a conventional topological insulator.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available