We discuss the implementation of arbitrary precision composite pulses developed using the methods of Brown et al. [K.R. Brown, A.W. Harrow, I.L. Chuang, Arbitrarily accurate composite pulse sequences, Phys. Rev. A 70 (2004) 052318]. We give explicit results for pulse sequences designed to tackle both the simple case of pulse length errors and the more complex case of off-resonance errors. The r...

3D iDOSY-HMBC pulse sequences allow the simplification of HMBC data mixtures via separation in diffusion domain. The presented methods utilize incorporated DOSY approach, iDOSY, where existing delays basic sequence are utilized for attenuation. In simplest form proposed sequences, no extra or RF-pulses were required, only two gradients added within polarization transfer delay.

By using tailored pulse sequences from a novel, 1.5-microm direct space-to-time pulse shaper driving a high-speed photodetector, we have achieved, for the first time to our knowledge, millimeter-wave arbitrary waveform generation at center frequencies approaching 50 GHz. By appropriately designing the driving optical pulse sequences, we demonstrate the ability to synthesize strongly phase- and ...

We study the suppression of noise-induced phase decoherence in a single atomic qubit by employing pulse sequences. The atomic qubit is composed of a single neutral atom in a far-detuned optical dipole trap and the phase decoherence may originate from the laser intensity and beam pointing fluctuations, as well as magnetic field fluctuations. We show that suitable pulse sequences may prolong the ...

We consider the problem of analyzing spin-flip qubit gate operation in presence Random Telegraph Noise (RTN). Our compressive approach is following. By using Feynman disentangling operators method, we calculate probability driven by different kinds composite pulses, e.g., Constant pulse (C-pulse), Quantum Well (QW-pulse), and Barrier Potential (BP-pulse) RTN. When pulses RTN act x-direction z-d...

We study the pulse control of decoherence in a qubit focusing on the general case where qubit-environment interactions induce decoherence with population decay as well as pure dephasing. We examine how the decoherence is suppressed by pulse sequences of bitand/or phase-flips. To do so, we present a method to calculate the time evolution of a qubit under such pulse sequences. We show that the pu...

The symmetry principles of NMR pulse-sequence design are summarized. The discussion is guided by an analogy with tiling schemes in the decorative arts. The symmetry operations for NMR pulse sequences are discussed in terms of excitation field modifiers and temporal modifiers. The quantum operators which describe the effect of these modifiers on the excitation field spin Hamiltonian are provided...

Four novel 5D (HACA(N)CONH, HNCOCACB, (HACA)CON(CA)CONH, (H)NCO(NCA)CONH), and one 6D ((H)NCO(N)CACONH) NMR pulse sequences are proposed. The new experiments employ non-uniform sampling that enables achieving high resolution in indirectly detected dimensions. The experiments facilitate resonance assignment of intrinsically disordered proteins. The novel pulse sequences were successfully tested ...

This study investigates a new composing method of double transmission of short coded sequences based on well-known Golay complementary codes, which allow to obtain the higher signal-to-noise ratio (SNR) and increase penetration depth. The proposed method can potentially find application in small parts ultrasonography and play important role in examination of superficial structures, e.g. in derm...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We study multiple-spin coherence transfers in linear Ising spin chains with nearest-neighbor couplings. These const...