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Life after charge noise: recent results with transmon qubits
A. A. Houck, Jens Koch, M. H. Devoret +2
We review the main theoretical and experimental results for the transmon, a superconducting charge qubit derived from the Cooper pair box. The increased ratio of the Josephson to c…
Randomized benchmarking and process tomography for gate errors in a solid-state qubit
J. M. Chow, J. M. Gambetta, L. Tornberg +7
We present measurements of single-qubit gate errors for a superconducting qubit. Results from quantum process tomography and randomized benchmarking are compared with gate errors o…
Nonlinear response of the vacuum Rabi resonance
Lev S. Bishop, J. M. Chow, Jens Koch +5
On the level of single atoms and photons, the coupling between atoms and the electromagnetic field is typically very weak. By employing a cavity to confine the field, the strength…
Anisotropic Instabilities in Trapped Spinor Bose-Einstein Condensates
M. Baraban, H. F. Song, S. M. Girvin +1
We theoretically investigate the effect of an anisotropic trap on the instability of the polar phase of a spin-1 Bose-Einstein condensate. By considering rigorously the s…
Dispersive optomechanics: a membrane inside a cavity
A. M. Jayich, J. C. Sankey, B. M. Zwickl +6
We present the results of theoretical and experimental studies of dispersively coupled (or "membrane in the middle") optomechanical systems. We calculate the linear optical propert…
Analog information processing at the quantum limit with a Josephson ring modulator
N. Bergeal, R. Vijay, V. E. Manucharyan +4
Amplifiers are crucial in every experiment carrying out a very sensitive measurement. However, they always degrade the information by adding noise. Quantum mechanics puts a limit o…