Full tunability and quantum coherent dynamics of a driven multilevel system
arXiv:2110.09852 · doi:10.1103/PhysRevApplied.19.044053
Abstract
Tunability of an artificial quantum system is crucial to its capability to process quantum information. However, tunability usually poses significant demand on the design and fabrication of a device. In this work, we demonstrate that Floquet engineering based on longitudinal driving provides distinct possibilities in enhancing the tunability of a quantum system without needing additional resources. In particular, we study a multilevel model based on gate-defined double quantum dots, where coherent interference occurs when the system is driven longitudinally. We develop an effective model to describe the driven dynamics of this multilevel system, and show that it is highly tunable via the driving field. We then illustrate the versatility and rich physics of a driven multilevel system by exploring phenomena such as driving modulation of resonances, adiabatic state transfer, and dark state. In the context of qubit control, we propose noise-resistant quantum gates based on adiabatic passage. The theoretical consideration we present here is rather general, and is in principle valid for other multilevel quantum systems.
15 pages, 9 figures
References in corpus (17)
- Supplementary information for "Quantum supremacy using a programmable superconducting processor"
- Strong quantum computational advantage using a superconducting quantum processor
- Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
- Electrically driven single electron spin resonance in a slanting Zeeman field
- Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
- Computing with spin qubits at the surface code error threshold
- Fast universal quantum control above the fault-tolerance threshold in silicon
- Two-qubit silicon quantum processor with operation fidelity exceeding 99%
- Precision tomography of a three-qubit donor quantum processor in silicon
- Two-level systems driven by large-amplitude fields
- Coherent Population Trapping of an Electron Spin in a Single Negatively Charged Quantum Dot
- A hole spin qubit in a fin field-effect transistor above 4 kelvin
- Tailoring quantum gases by Floquet engineering
- Tunable Spin-Orbit Coupling via Strong Driving in Ultracold Atom Systems
- Landau-Zener-Stuckelberg Interferometry of a Single Electron Charge Qubit
- Large-amplitude driving of a superconducting artificial atom: Interferometry, cooling, and amplitude spectroscopy
- Multi-level interference resonances in strongly-driven three-level systems