Large-amplitude driving of a superconducting artificial atom: Interferometry, cooling, and amplitude spectroscopy
arXiv:0906.0185 · doi:10.1007/s11128-009-0108-y
Abstract
Superconducting persistent-current qubits are quantum-coherent artificial atoms with multiple, tunable energy levels. In the presence of large-amplitude harmonic excitation, the qubit state can be driven through one or more of the constituent energy-level avoided crossings. The resulting Landau-Zener-Stueckelberg (LZS) transitions mediate a rich array of quantum-coherent phenomena. We review here three experimental works based on LZS transitions: Mach-Zehnder-type interferometry between repeated LZS transitions, microwave-induced cooling, and amplitude spectroscopy. These experiments exhibit a remarkable agreement with theory, and are extensible to other solid-state and atomic qubit modalities. We anticipate they will find application to qubit state-preparation and control methods for quantum information science and technology.
13 pages, 5 figures
References in corpus (17)
- Coupling Superconducting Qubits via a Cavity Bus
- Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
- Climbing the Jaynes-Cummings Ladder and Observing its Sqrt(n) Nonlinearity in a Cavity QED System
- Observation of Berry's Phase in a Solid State Qubit
- Single artificial-atom lasing
- Two-photon probe of the Jaynes-Cummings model and symmetry breaking in circuit QED
- Coherence times of dressed states of a superconducting qubit under extreme driving
- Microwave-Induced Cooling of a Superconducting Qubit
- Amplitude Spectroscopy of a Solid-State Artificial Atom
- Sisyphus cooling and amplification by a superconducting qubit
- Consistency of ground state and spectroscopic measurements on flux qubits
- Spectroscopy of Ultracold, Trapped Cesium Feshbach Molecules
- `Stückelberg interferometry' with ultracold molecules
- Quantum Phase Tomography of a Strongly Driven Qubit
- Observation of macroscopic Landau-Zener transitions in a superconducting device
- Parametric control of a superconducting flux qubit
- Phase-locking transition in a chirped superconducting Josephson resonator