Robust Preparation of Wigner-Negative States with Optimized SNAP-Displacement Sequences

Optimized preparation of quantum states by conditional measurements.

State preparation of quantum systems is a prerequisite for studying fundamental aspects of quantum measurement theory @1#, as well as for encoding quantum information @2# and its processing ~computing! @3#. Problems of state preparation have been dealt with most extensively in the realm of cavity quantum electrodynamics @4–8#. One proposal for state preparation of a cavity field mode @8# relies...

Optimized preparation and evaluation of 99mTc-Streptomycin

Introduction: The endemic occurrence of new strains of tuberculosis around the globe has initiated new research on developing diagnostic radiopharmaceutical based on antibiotics. Methods:Tc-99m labeled streptomycin was prepared using freshly milked 99mTcO4- and various concentrations of streptomycin, stannous chloride at various temperatures in high yield radio...

Point-based warping with optimized weighting factors of displacement vectors

The accurate comparison of inter-individual 3D image brain datasets requires non-affine transformation techniques (warping) to reduce geometric variations. Constrained by the biological prerequisites we use in this study a landmark-based warping method with weighted sums of displacement vectors, which is enhanced by an optimization process. Furthermore, we investigate fast automatic procedures ...

Entanglement versus negative domains of Wigner functions

Robust Wigner distribution with application to the instantaneous frequency estimation

The Wigner distribution (WD) produces highly concentrated time–frequency (TF) representation of nonstationary signals. It may be used as an efficient signal analysis tool, including the cases of frequency modulated signals corrupted with the Gaussian noise. In some applications, a significant amount of impulse noise is present. Then, the WD fails to produce satisfactory results. The robust peri...