Sentences with phrase «nuclear spins in»

We present a method to achieve general N - body entangling quantum gates between nuclear spins in solid - state platforms based on nitrogen vacancy centers in diamond or divacancies in silicon carbide.

Sensing of single nuclear spins in random thermal motion with proximate nitrogen - vacancy centers.

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

In the strong coupling regime, the pure interaction between NV center and the molecule is sufficiently strong, to get a full contrast signal even without polarizing the nuclear spins in the molecule.

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.

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

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.

In the new experiments, the physicists used magnetic resonance to reverse the nuclear spins in hydrogen isotopes embedded in the OLED, and then were able to detect how the reversed spins caused a change in the electrical current through the OLED.

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.

Not exact matches

Advanced Accelerator Applications hasn't received much attention since spinning off from the European Organization for Nuclear Research (CERN) in 2002, but the company has quietly built a leadership position in the burgeoning niche for radioactive markers.

«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.»

The terrorist attacks put a new spin on things, and those things aren't spinning in nuclear energy's favor.

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.

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.

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.

«If you want to store information, the highest storage density would be to store information in single nuclear spins,» Boehme says.

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.

As in a conventional fossil fuel or nuclear power plant, that steam spins turbines, which generate electricity.

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.

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

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

«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.

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

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.

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.

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

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.

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 fielIn 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 fielin a bulk diamond at room temperature and low ambient magnetic field.

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.

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.

Highly sensitive nuclear spin detection is crucial in many scientific areas including nuclear magnetic resonance spectroscopy, magnetic resonance imaging (MRI), and quantum computing.

With our protocol one can detect, address and control nuclear spins around an electron spin unambiguously and individually in a broad frequency band.

Current research includes spin relaxation and decoherence in quantum dots due to spin - orbit and hyperfine interaction; non-Markovian spin dynamics in bosonic and nuclear spin environments; generation and characterization of non-local entanglement with quantum dots, superconductors, Luttinger liquids or Coulomb scattering in interacting 2DEGs; spin currents in magnetic insulators and in semiconductors; spin Hall effect in disordered systems; spin orbit effects in transport and noise; asymmetric quantum shot noise in quantum dots; entanglement transfer from electron spins to photons; QIP with spin qubits in quantum dots and molecular magnets; macroscopic quantum phenomena (spin tunneling and coherence) in molecular and nanoscale magnetism.

Tubes were spun, the nuclear lysis buffer with proteinase inhibitor was added and sonicated to form shared chromatin of about 200 — 1000 base pairs in length (data not shown).

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

In the words of Stefon, it's got EVERYTHING: Fighter jets, cool nicknames, proto - karaoke, flat spins, beach volleyball, the specter of nuclear annihilation, and enough homoerotic subtext to power a whole slew of thinkpieces.

Fortum has already signed an agreement to buy a 47 % share of Uniper currently held by E.ON, a German utility that spun off its coal, oil, gas, and nuclear assets to form Uniper in January 2016.