The fidelity of two-qubit gates using silicon spin qubits is limited by charge noise. When attempting to dynamically compensate for noise single-qubit echo pulses, crosstalk can cause complications. We present a method deep neural network optimize the components an analytically designed composite pulse sequence, resulting in gate robust against errors while also taking into account. analyze two...

Figure 1: BAR Imaging Sequence. Each excitation pulse excites a particular shape within the field of view according to the pulse profile and the gradient strength. These n subdivisions of the image are then sequentially refocused in the same order they were excited so that each has identical T2 weighting. *n Enhanced Parallel Imaging Acceleration with a B1 Accelerated Reconstruction Sequence (B...

This paper proposes a new design strategy for optimizing MRI pulse sequences for T1 relaxometry. The design strategy optimizes the pulse sequence parameters to minimize the maximum variance of unbiased T1 estimates over a range of T1 values using the Cramér-Rao bound. In contrast to prior sequences optimized for a single nominal T1 value, the optimized sequence using our bound-based strategy ac...

A var ia t pulse (E-pulse) discrimination is before convolutior. waveform, a new moments sequence impulse-response, inclusion, it has using a particular the fourth-order appropriately estimator, this 11 same damped cor signal r( t ) , thus resonances of the: results clearly show are achieved by sequence of r( t ) as instead of the discrimination especially notable Gaussian noise, r ( 0 .

Modulation of a cw laser by a traveling-wave acousto-optic modulator has recently been utilized to implement sequences of phase-coherent optical pulses.' By controlling the relative phases of the rf pulses applied to the crystal, one can control the phases of the light pulses that are created by the acoustic grating. That is, the phase of an rf pulse is effectively transferred to the correspond...

In vivo MRI data can be corrupted by motion. Motion artifacts are particularly troublesome in Diffusion Weighted MRI (DWI), since the MR signal attenuation due to Brownian motion can be much less than the signal loss due to dephasing from other types of complex tissue motion, which can significantly degrade the estimation of self-diffusion coefficients, diffusion tensors, etc. This paper descri...

Parametric fluctuations or stochastic signals are introduced into the rectangular pulse sequence to investigate the feasibility of random dynamical decoupling. In a large parameter region, we find that the out-of-order control pulses work as well as the regular pulses for dynamical decoupling and dissipation suppression. Calculations and analysis are enabled by and based on a nonperturbative dy...

Brillouin optical time-domain reflectometry (BOTDR) is a branch of distributed fibre-optic sensors, and it can measure the strain temperature information, localised by return time probe pulse, along fibre based on spontaneous scattering process. Parameters BOTDR system, including spatial resolution, signal-to-noise ratio, measurement speed, sensing range, have mutually restrictive relationship....

This paper explores how pulse-diverse modulation of an FSK-PSK modulated pulse train enhances exibility to shape the size and distribution of the pulse train's ambiguity volume on the Doppler-delay plane. Pulse-diverse modulation compresses each pulse in the pulse train di erently. Based on a priori information of the relative criticality of various Doppler-delay regions, (e.g., the presence of...

In this paper, the effect of optical pulse shape on the performance of direct sequence optical code division multiple access in presence of fiber group velocity dispersion (GVD) and pulse linear chirp is analyzed. In our analysis, chirp-Gaussian shape and chirp-Hyperbolic-Secant shape optical orthogonal codes are employed as address sequence. Avalanche photodiode (APD) is used in an optical cor...