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11 papers · 2 filters
Quantum state tomography of an itinerant squeezed microwave field
F. Mallet, M. A. Castellanos-Beltran, H. S. Ku +6
We perform state tomography of an itinerant squeezed state of the microwave field prepared by a Josephson parametric amplifier (JPA). We use a second JPA as a pre-amplifier to impr…
From Cavity Electromechanics to Cavity Optomechanics
C. A. Regal, K. W. Lehnert
We present an overview of experimental work to embed high-Q mesoscopic mechanical oscillators in microwave and optical cavities. Based upon recent progress, the prospect for a broa…
Controlling the quantum stereodynamics of ultracold bimolecular reactions
M. H. G. de Miranda, A. Chotia, B. Neyenhuis +6
Chemical reaction rates often depend strongly on stereodynamics, namely the orientation and movement of molecules in three-dimensional space. An ultracold molecular gas, with a tem…
Design and Testing of Superconducting Microwave Passive Components for Quantum Information Processing
H. S. Ku, F. Mallet, L. R. Vale +4
We report on the design, fabrication and testing of two superconducting passive microwave components, a quadrature hybrid and a 20 dB directional coupler. These components are desi…
Quantum-defect analysis of and Rydberg energy levels
Jia Wang, Chris H. Greene
In this work, Rydberg energy levels of the triatomic hydrogen molecule () are studied with multichannel quantum-defect theory. We extract the body-frame p-wave quantum de…
Decoherence due to elastic Rayleigh scattering
H. Uys, M. J. Biercuk, A. P. VanDevender +4
We present theoretical and experimental studies of the decoherence of hyperfine ground-state superpositions due to elastic Rayleigh scattering of light off-resonant with higher lyi…