Sentences with phrase «nuclear spins»

Until the new study, «nobody has ever shown it directly» at room temperature by turning nuclear spins to change an electrical current, he adds.

Our method generates highly selective filter functions ensuring individual addressing and control of nuclear spins in realistic scenarios.

«The fidelity of the spin qubit is limited to small values by the presence of nuclear spins in natural silicon.

The authors report the observation of a bulk nuclear spin polarization of six - percent, which is an NMR signal enhancement of approximately 170,000 times over thermal equilibrium.

We can control a current by controlling nuclear spins.»

Sensing of single nuclear spins in random thermal motion with proximate nitrogen - vacancy centers M. Bruderer, P. Fernández - Acebal, R. Aurich and M. B. Plenio Phys.

In our paper we demonstrate an efficient scheme that realises laser induced 13C nuclear spin hyperpolarization in a bulk diamond at room temperature and low ambient magnetic field.

At optical wavelengths, high resolution spectroscopy can be used to determine nuclear spin temperatures in NH3 and H2O through emission lines of their dissociation products NH2 and H2O +.

Here we propose and analyze in detail protocols that can achieve rapid hyperpolarization of 13C nuclear spins in randomly oriented ensembles of nanodiamonds at room temperature.

The former is ideal for soft - tissue contrast, and the latter has extremely fine imaging resolution due to a revolution in the technology called dynamic nuclear spin polarization, which is used to track minute biochemistry in the body — such as the transition of the naturally occurring chemical pyruvate to lactate.

The experiment is a much more practical version of a study Boehme and colleagues published in Science in 2010, when they were able to read nuclear spins from phosphorus atoms in a conventional silicon semiconductor.

Lead author James Wood describes the technique as «a dramatic simplification of the nuclear detection process, where we essentially shine light on an atomic - sized defect in diamond and observe its natural response, at a fundamentally quantum level, to the target nuclear spins nearby.»

Echo - planar imaging (EPI) uses only one nuclear spin excitation per image and lends itself to a variety of critical medical and scientific applications.

Scientists believe that any given molecule can transform from ortho - into para - spin states and vice versa, a process known as nuclear spin conversion.

Li, the Das Family Career Development Distinguished Associate Professor in the School of Engineering & Applied Science, and his collaborators have derived a mathematical formula to design broadband pulse sequences to excite a population of nuclear spins over a wide band of frequencies.

«It also raises the question whether this effect can be used for technological applications such as computer chips that use nuclear spins as memory and our method as a way to read the spins.»

«Hopefully, OLEDs will become better — use less electricity and produce more light — because we learned here how nuclear spins» orientation influences how well the OLED works,» Boehme says.

In the first two experiments, Boehme says, the physicists made nuclear spins in a proton and deuterium wiggle in characteristic ways, and were able to read corresponding wiggles in the resulting electrical current.

Because nuclear spin - controlled electrical current regulates output of light by the OLED, it provides a way to study how to make OLEDs more efficient.

Harnessing nuclear spins can increase the efficiency «of electronic materials out of which so much technology is made,» Boehme adds.

Nuclear spin orientations live longer, so are better for storing data.

Researchers at the University of Melbourne have demonstrated a way to detect nuclear spins in molecules non-invasively, providing a new tool for biotechnology and materials science.

The result is that the electron spins and nuclear spins match — the spin information has effectively been encoded in a longer - lived nuclear memory.

Existing methods to create qubits rely on trapping atoms with lasers or manipulating nuclear spins in semiconductor crystals, among other approaches.

«We found that atoms starting out in one of the islands of stability remained unentangled, but for those that started out in the chaotic sea, the electron and nuclear spins rapidly became entangled,» says Jessen.

The paper is titled «Room - temperature in situ nuclear spin hyperpolarization from optically pumped nitrogen vacancy centers in diamond.»

To help CEA - Leti and Inac leverage nuclear spin free silicon in the CMOS platform, a silicon precursor was supplied by Air Liquide, using an isotopically purified silane of very high isotopic purity with a 29Si isotope content of less than 0.00250 percent, prepared by the Institute of Chemistry of High - Purity Substances at the Russian Academy of Sciences.

These systems combine the presence of many stable quantum registers, i.e. nuclear spins, together with the possibility to coherently interact with them via a color impurity, e.g. and NV center implanted on the system, controlled with external radiation.

Resonant microwave radiation can then be used to transfer this polarization to surrounding nuclear spins.

Moreover, we show that using the integrated solid effect both for single - and double - quantum transitions nuclear spin polarization can be achieved even when the static magnetic field is not aligned along the NV's crystal axis.

However, in many situations the applicability of NMR and MRI are limited by inherently poor sensitivity and insufficient nuclear spin lifetimes.

A green laser controls the quantum state of the probe, which is tuned to the resonant frequency of target nuclear spins.

Positioning nuclear spins in interacting clusters for quantum technologies and bioimaging Z. - Y.

However, the generation of a singlet state of nuclear spins in experiments by using unitary preparation is extremely difficult at room temperature.