It is shown that the introduction of a 180 degrees refocusing pulse into a standard diffusion weighted stimulated echo sequence is equivalent to the simplest hyperecho sequence with identical diffusion weighting but equal or greater signal-to-noise (SNR) and thus equal or greater diffusion contrast. For high b-value imaging, the hyperecho sequence thus possesses the high diffusion contrast in t...

for Deinterleaving Repetitive Sequences G. Noone, S. D. Howard Electronic Warfare Division, Defence Science and Technology Organisation PO Box 1500 Salisbury, South Australia 5108 email: [email protected] & [email protected] Abstract| Conventional algorithms for deinterleaving repetitive sequences, such as radar pulse trains, experience great di culties when two or...

Introduction: Magnetic resonance imaging is the gold standard for assessing global and regional function of the heart; such as the analysis of ejection fraction, ventricular volumes, and quantification of myocardial wall-motion [1]. However, the initial planning step required to localize the heart principal axes is time consuming and requires at three or four breath-holds in order to get to the...

We present rigorous performance bounds for the optimal dynamical decoupling pulse sequence protecting a quantum bit (qubit) against pure dephasing. Our bounds apply under the assumption of instantaneous pulses and of bounded perturbing environment and qubit-environment Hamiltonians such as those realized by baths of nuclear spins in quantum dots. We show that if the total sequence time is fixed...

Ultrafast NMR based on spatial encoding yields arbitrary multidimensional spectra in a single scan. The dramatic acceleration afforded by parallelisation makes it possible to capture transient species and processes, has notably been applied the monitoring of reactions analysis hyperpolarised species. At heart ultrafast lies spatially sequential manipulation nuclear spins. This is virtually alwa...

Maturing hybrid circuit quantum electrodynamics architectures composed of semiconductor dots and on-chip microwave resonators promise an effective approach for nondemolition readouts in systems. Here, we study coherence a charge qubit coupled with high-impedance resonator. The is controlled by periodic pulse sequence, dispersive measurement performed measuring the time-averaged resonator respon...

The article considers an approach to the modification of manipulative impulse sequences based on Barker codes. It is proposed change structure encoded pulses by duration elementary message, taking into account in duty cycle their repetition while maintaining total average energy. Numerical relations are obtained that determine spectral and temporal parameters for a seven-element pulse sequence,...

The NMR analysis of cell extracts and culture media from multiplied by an exponential weighting function, giving an additional line broadening of 2 Hz. cells fed with multiple-C-labeled substrates such as [UC6]glucose gives access to various aspects of cellular meF98 glioma cells were grown to confluency in 15 cm culture dishes in a humidified atmosphere of 10% CO2 in tabolism. C NMR allows the...

Various analogs of NMR and MRI are now technically possible in optics; specifically, high-resolution laser-pulse shaping and complex pulse sequence generation with well-defined phase shifts has been demonstrated. Here we summarize this technology and discuss the potential for these methods to enhance optical functional imaging, competing with (and surpassing?) what is possible by functional MRI.

We show how a pulse-level implementation of certain multiqubit gates allows for the simultaneous execution single- and acting on overlapping sets qubits, in mechanism we name absorption. With absorption as foundation, present an algorithm to schedule quantum circuit pulse sequence neutral-atom processor with single channel gate execution. For any practical relevance, observe that results optima...