51 citations · 101 across the 5 of their papers we have counts for
6 papers · 1 filter
Amplitude Spectroscopy of a Solid-State Artificial Atom
David M. Berns, Mark S. Rudner, Sergio O. Valenzuela +4
The energy-level structure of a quantum system plays a fundamental role in determining its behavior and manifests itself in a discrete absorption and emission spectrum. Conventiona…
Excitation of the dissipationless Higgs mode in a fermionic condensate
R. A. Barankov, L. S. Levitov
The amplitude mode of a fermionic superfluid, analogous to the Higgs Boson, becomes undamped in the strong coupling regime when its frequency is pushed inside the BCS energy gap. W…
Microwave-Induced Cooling of a Superconducting Qubit
S. O. Valenzuela, W. D. Oliver, D. M. Berns +3
We demonstrated microwave-induced cooling in a superconducting flux qubit. The thermal population in the first-excited state of the qubit is driven to a higher-excited state by way…
Mach-Zehnder Interferometry in a Strongly Driven Superconducting Qubit
William D. Oliver, Yang Yu, Janice C. Lee +3
We demonstrate Mach-Zehnder-type interferometry in a superconducting flux qubit. The qubit is a tunable artificial atom, whose ground and excited states exhibit an avoided crossing…
Multi-Photon, Multi-Level Dynamics in a Superconducting Persistent-Current Qubit
Y. Yu, W. D. Oliver, J. C. Lee +3
Single-, two-, and three-photon transitions were driven amongst five quantum states of a niobium persistent-current qubit. A multi-level energy-band diagram was extracted using mic…
DC measurements of macroscopic quantum levels in a superconducting qubit structure with a time-ordered meter
D. S. Crankshaw, K. Segall, D. Nakada +7
DC measurements are made in a superconducting, persistent current qubit structure with a time-ordered meter. The persistent-current qubit has a double-well potential, with the two…