Sentences with phrase «of nuclear spins»

These results demonstrate that high fidelity gates can be implemented even in the presence of nuclear spins.

Note that the former paves the way to exploit the exceptional properties of nuclear spins as solid - state quantum registers while, the latter, corresponds to a question that could previously be answered only when billions of these molecules were available.

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

Here, we propose a dissipative scheme that achieves the preparation of pairs of nuclear spins in long - lived singlet states by a protocol that combines the interaction between the nuclei and a periodically reset electron spin of a nirogen - vacancy center with local radio - frequency control of the nuclear spins.

NMR / MRI signals depend upon a majority of nuclear spins being polarized to point in one direction — the greater the polarization, the stronger the signal.

By tracking the changes in current, the researchers can infer the pointing of the nuclear spins.

But the signal from the nuclear «spin» is very weak and conventional NMR machines require many millions of nuclear spins to detect anything.

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.

Using measurements of the nuclear spin, the team could demonstrate experimentally that the tennis racket effect really does improve the robustness of scattering sequences.

Not exact matches

I was already tired because I had been up nursing during the night, Brian was off at work already, I simply wanted a quiet morning with my coffee because there was so much mundane work ahead on this day — cleaning bathrooms, doing laundry — but instead the Rice Krispies multiplied to biblical proportions while they flew through the air and one small cereal bowl became a nuclear wasteland scattered into seemingly every corner of the kitchen while milk streamed off the edge of the table puddling into the carnage and the bowl continued to spin.

«That the Parliament looks critically at the results of a new poll on support for nuclear weapons in Scotland commissioned by Lord Ashcroft; believes that the result stating that 51 % of Scots want the Trident nuclear deterrent to be replaced is misguidedly being used to suggest that a majority of Scots support keeping nuclear weapons in Scotland; understands that the results of this poll were intended to challenge the findings of a recent poll commissioned by the Scottish Campaign for Nuclear Disarmament that showed a decisive 75 % majority of the Scottish public is against both the cost and the reasoning behind the UK Government's intention to keep all of its nuclear weapons stationed in Scotland; understands that, while Lord Ashcroft conducted the poll to supposedly show that «more than half of Scots are in favour of nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.nuclear weapons in Scotland commissioned by Lord Ashcroft; believes that the result stating that 51 % of Scots want the Trident nuclear deterrent to be replaced is misguidedly being used to suggest that a majority of Scots support keeping nuclear weapons in Scotland; understands that the results of this poll were intended to challenge the findings of a recent poll commissioned by the Scottish Campaign for Nuclear Disarmament that showed a decisive 75 % majority of the Scottish public is against both the cost and the reasoning behind the UK Government's intention to keep all of its nuclear weapons stationed in Scotland; understands that, while Lord Ashcroft conducted the poll to supposedly show that «more than half of Scots are in favour of nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.nuclear deterrent to be replaced is misguidedly being used to suggest that a majority of Scots support keeping nuclear weapons in Scotland; understands that the results of this poll were intended to challenge the findings of a recent poll commissioned by the Scottish Campaign for Nuclear Disarmament that showed a decisive 75 % majority of the Scottish public is against both the cost and the reasoning behind the UK Government's intention to keep all of its nuclear weapons stationed in Scotland; understands that, while Lord Ashcroft conducted the poll to supposedly show that «more than half of Scots are in favour of nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.nuclear weapons in Scotland; understands that the results of this poll were intended to challenge the findings of a recent poll commissioned by the Scottish Campaign for Nuclear Disarmament that showed a decisive 75 % majority of the Scottish public is against both the cost and the reasoning behind the UK Government's intention to keep all of its nuclear weapons stationed in Scotland; understands that, while Lord Ashcroft conducted the poll to supposedly show that «more than half of Scots are in favour of nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.Nuclear Disarmament that showed a decisive 75 % majority of the Scottish public is against both the cost and the reasoning behind the UK Government's intention to keep all of its nuclear weapons stationed in Scotland; understands that, while Lord Ashcroft conducted the poll to supposedly show that «more than half of Scots are in favour of nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.nuclear weapons stationed in Scotland; understands that, while Lord Ashcroft conducted the poll to supposedly show that «more than half of Scots are in favour of nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.nuclear weapons», the poll showed that only 37 % of Scots believe so in principle, compared with 48 % who do not; questions the integrity of a poll that, it understands, was privately paid for by a wealthy Tory backer; considers that Lord Ashcroft is spinning the results, and believes that he should stop doing so and accept what it considers the fact proven time and again that Scots want rid of nuclear weapons.nuclear weapons.»

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

Silicon - 28 is not magnetic so the atoms had almost no effect on the magnetic moment, or nuclear spin, of the phosphorus, meaning that these atoms behaved as though they were in a vacuum.

Water molecules can exist as one of two isomers, depending on how the spins of their two hydrogen atoms are orientated: ortho, where the nuclear spins are parallel to one another, and para, where the spins are antiparallel.

Steger et al. (p. 1280) demonstrate that the nuclear spins of 31P impurities in an almost isotopically pure sample of 28Si can have a coherence time of as long as 192 seconds at a temperature of ∼ 1.7 K.

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 research team, which included Natalya Pugach from the Skobeltsyn Institute of Nuclear Physics, studied the interactions between superconductivity and magnetization in order to understand how to control electron spins (electron magnetic moments) and to create the new generation of electronics.

«There are economies of small, too,» says Jose Reyes, chairman of OSU's nuclear engineering department and chief technology officer at nearby NuScale Power, a commercial spin - off of the department.

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.

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.

The probe responds to the nuclear spins of the hydrogen atoms and provides a direct measurement via the red light emitted.

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.

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.»

Advances in computing power and physics have helped him build sophisticated models, spun from hundreds of thousands of lines of computer code, that capture the nuances of the stars» shape while taking into account everything from stars» rotation and nuclear reactions to Einstein's theory of gravity.

Starting with an ensemble of spin - down nuclei, the researchers used a specially tuned radio - frequency pulse to make a sort of logic gate: if the electron's spin is down, the nucleus remains unaffected; if the electron's spin is up, the nuclear spin is flipped up as well.

The team began their experiment with a set of atoms that did not display this kind of entanglement and then checked whether kicking the atoms would provoke the electron and nuclear spins to entangle.

On top of that, the gas must be isotopically pure, since only 12C — a stable isotope of the carbon atom — has zero nuclear spin, which is a prerequisite for the magnetic sensor later on.

«One main goal of RHIC's energetic polarized - proton collisions is to increase the precision of our measurements so we can better tease out the contribution from the gluons» spin,» said Jamie Dunlop, Associate Chair for Nuclear Physics in Brookhaven's Physics Department.

That's similar to the shocking situation scientists found themselves in when analyzing results of spinning protons striking different sized atomic nuclei at the Relativistic Heavy Ion Collider (RHIC)-- a U.S. Department of Energy (DOE) Office of Science User Facility for nuclear physics research at DOE's Brookhaven National Laboratory.

Each of these spinning magnetic storms is the size of Europe, and together they may be pumping enough energy into the solar atmosphere to heat it to millions of degrees — a power that leads one scientist to suggest we could mimic these solar tornadoes on Earth in the quest for nuclear fusion power.

More proton collisions at this DOE Office of Science User Facility produce more data for scientists to sift through to answer important nuclear physics questions, including the search for the source of proton spin.

In this approach, a qubit» 0» state is defined when the spin of the electron is down and the nucleus spin is up, while the» 1» state is when the electron spin is up, and the nuclear spin is down.

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.

The nuclear reactions that result from this gas mixing produce a large supply of neutrons that are captured by the nuclei of heavy elements such as iron to make Sr and Y. Chiappini and her colleagues found that the best way to explain the pattern of abundances they had observed was to apply a stellar model involving a spinning velocity of 500 kilometers per second at the surface.

In greatly simplified terms: In a strong magnetic field, radiowaves excite the nuclear spins of the zymonic acid to oscillation.

The nuclear spin temperature is believed to be preserved indefinitely after the formation of a molecule, and hence gives an estimate of the temperature prevailing at the time of the last condensation of the ice.

The biophysicist usually recognizes the utility of new physical tools — e.g., nuclear magnetic resonance and electron spin resonance — in the study of specific problems in biology.

Specifically, I am leading a Project focusing on Nitrogen - Vacancy centers in nanostructured diamond as a means to hyperpolarize nuclear spins for the production of hyperpolarized agents for imaging of cells and tissues in living organisms.

By creating a magnetic field that interacts with the nuclear spins of carbon atoms in the proteins, NMR measures a trait known as chemical shift for some of the individual atoms in the sample, which reveals how those atoms are connected.

The 29Si isotope is present at 4.67 percent in natural silicon and is the only stable isotope of silicon that carries a nuclear spin limiting the qubit coherence time.

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.

The key idea is the use of the substantial second order coupling between the nuclear spins obtained through a strongly detuned NV centre which is periodically reinitialized by a dissipative process.

Here, we address directly the challenges by using the NV center as a mediator to couple two nuclear spins, while eliminating the NV center and the effect of its decoherence and relaxation from the dynamics.

The electronic spin of nitrogen - vacancy (NV) centers in diamond is extremely sensitive to local magnetic fields, which makes them a valuable tool for sensing nuclear and electronic spins in their vicinity.

However, there are several outstanding challenges caused by the relaxation and decoherence processes of the NV center electron spin as these limit quantum gate fidelities on nuclear registers as well as spectral resolution, selectivity and signal to noise ratio in sensing applications.

The prevalent methods for achieving DNP in solutions are typically most effective in the regime of small interaction correlation times between the electron and nuclear spins, limiting the size of accessible molecules.

Its sensitivity depends strongly on nuclear spin polarisation, i.e. the magnetisation of the body.

This high levels of hyperpolarization, together with the long nuclear - spin polarization lifetimes in nanodiamonds and the relatively high density of 13C nuclei, turn functionalized and hyperpolarized nanodiamonds into attractive MRI probes for molecular imaging both in vitro and in vivo.

Sensing, localizing, and identifying individual nuclear spins or frequency components of a signal in the presence of a noisy environment requires the development of robust and selective methods of dynamical decoupling.