By exact numerical and master equation approaches, we show that a central spin1/2 can be configured to probe internal bath dynamics. System-bath interactions cause Rabi oscillations in the detector and periodic behavior of fidelity. This period is highly sensitive to the strength of the bath self-interactions, and can be used to calculate the intra-bath coupling.

Title of dissertation: MULTI-JUNCTION EFFECTS IN DC SQUID PHASE QUBITS Benjamin K. Cooper, Doctor of Philosophy, 2013 Dissertation directed by: Professor Frederick C. Wellstood Department of Physics I discuss experimental and theoretical results on an LC filtered dc SQUID phase qubit. This qubit is an asymmetric aluminum dc SQUID, with junction critical currents 1.5 and 26.8 μA, on a sapphire s...

Sorghum (Sorghum bicolor (L.) Moench) is one of the major crops for grain and fodder, widely grown in India under rain fed conditions. Rabi sorghum is grown in an area of 5.5 million hectares mainly in the states of Maharashtra, Karnataka and Andhra Pradesh with average productivity of 854 kg/ha. Despite low productivity, Rabi sorghum continues to be an important component of dry land economy i...

My first thoughts in writing this lecture are about the young women and young men who are beginning their lives in science: students and those beginning scientific research. I have been in experimental scientific research for 45 years; I have done some good experiments of which the best was the discovery of the tau leptonj I have followed research directions that turned out to be uninteresting ...

BACKGROUND Simultaneous measurement of four-limb blood pressures can improve the accuracy of cardiovascular disease diagnosis. This study aims to investigate the association of simultaneously measured four-limb blood pressures with cardiovascular function as the non-invasive diagnostic method of cardiovascular disease in primary care. METHODS 229 subjects (62 males, mean age, 63.50 ± 11.13 ye...

We demonstrate the coherent nature of dynamic Rabi-shifted sidebands arising when a picosecond probe laser interacts with a weakly ionized laser-generated microplasma. The coherence is manifested as spectral fringes observed in the sideband spectra. A model is presented that quantitatively predicts both the spectral phase and the spectral interference measured in the sidebands.

We report new techniques for driving high-fidelity stimulated Raman transitions in trapped-ion qubits. An electro-optic modulator induces sidebands on an optical source, and interference between the sidebands allows coherent Rabi transitions to be efficiently driven between hyperfine ground states separated by 14.53 GHz in a single trapped 111Cd+ ion.

We simulate Shor's algorithm using the Ising spin quantum computer. The influence of non-resonant effects is analyzed in detail. It is shown that our " 2πk "-method developed earlier in our papers successfully suppresses non-resonant effects even for relatively large values of the Rabi frequency.

We present a new method for finding isolated exact solutions of a class of non-adiabatic Hamiltonians of relevance to quantum optics and allied areas. Central to our approach is the use of Bogoliubov transformations of the bosonic fields in the models. We demonstrate the simplicity and efficiency of this method by applying it to the Rabi Hamiltonian.

We demonstrate Rabi oscillations of small numbers of 87Rb atoms between ground and Rydberg states with n< or =43. Coherent population oscillations are observed for single atoms, while the presence of two or more atoms decoheres the oscillations. We show that these observations are consistent with van der Waals interactions of Rydberg atoms.