ライフサイエンスコーパス: nuclear spin

1 equently encode the source qubit in a single nuclear spin.

2 g of the S = (1/2) electron spin and I = 7/2 nuclear spin.

3 ng block to form a solid-state qubit free of nuclear spin.

4 ine couplings to several atoms with non-zero nuclear spin.

5 independent of the nuclei bearing, or not, a nuclear spin.

6 isters by harnessing abundant weakly coupled nuclear spins.

7 ising from charge noise and from coupling to nuclear spins.

8 uctuating magnetic fields DeltaB produced by nuclear spins.

9 he advantage of interacting more weakly with nuclear spins.

10 uctures containing only 1 x 10(5) quadrupole nuclear spins.

11 h by coherent control of single electron and nuclear spins.

12 ls is limited by hyperfine interactions with nuclear spins.

13 ssively suppressing the interaction with the nuclear spins.

14 he electron spin to its orbital motion or to nuclear spins.

15 uce distance-dependent dipolar relaxation of nuclear spins.

16 mation against all collective noise in three nuclear spins.

17 ferromagnet, and dynamically polarize these nuclear spins.

18 ine coupling between (unpaired) electron and nuclear spins.

19 g of the electrons and robust storage in the nuclear spins.

20 shield the vanadium centers against solvent nuclear spins.

21 and it has also been used for sensing single-nuclear spins.

22 ear spin bath, previously achievable only in nuclear spin-0 semiconductors, where qubit network inter

23 ear singlet states are nonmagnetic states of nuclear spin-1/2 pairs that may exhibit lifetimes much s

24 Rabi oscillations are observed in this nuclear spin-active environment ((1)H and (14)N nuclei)

25 single electronic spin and several proximal nuclear spin ancillae in order to repetitively readout t

26 e to improve the readout by use of a pair of nuclear spin ancillae, an important step toward the real

27 focus on the interaction between 10(4)-10(6) nuclear spins and a spin of a single electron or valence

28 Here, we show that prepolarization of the nuclear spins and detection with a superconducting quant

29 By mitigating interactions with nearby nuclear spins and facilitating selective thermal measure

30 nvironmental decoherence: from phonons, from nuclear spins and from intermolecular dipolar interactio

31 lectronic angular momentum is transferred to nuclear spins and is exploited in quantum information pr

32 noise ratio solid-state NMR spectra of (17)O nuclear spins and to probe sites on or near the surface,

33 diamond, weakly coupled to a large number of nuclear spins, and subjected to the Rabi driving with a

34 particular, but equally attractive for wider nuclear spin applications benefitting from ultra-sensiti

35 molecular vector defined by the electron and nuclear spin are well characterized by a stationary rand

36 ecause of their smaller gyromagnetic ratios, nuclear spins are more difficult to manipulate than elec

37 Here, we use the NV intrinsic nuclear spin as a nonvolatile classical memory to store

38 nvironment, including the presence of (29)Si nuclear spins as found in natural silicon.

39 and extract the number of bound electron and nuclear spins as well as their locations.

40 by a detection sensitivity of roughly 1,200 nuclear spins at a temperature of 600 mK.

41 system and making it convenient to implement nuclear spin-based qudits using (75)As donors.

42 n be exploited for long-term data storage or nuclear-spin-based quantum memory.

43 a phosphorus donor electron spin in a (29)Si nuclear spin bath as our model system, we discover both

44 onment and the dynamics of the quantum dot's nuclear spin bath by virtue of its resonant nature and b

45 Here, we report direct measurement of nuclear spin bath coherence in individual self-assembled

46 onic spin-bath dynamics in the presence of a nuclear spin bath of sufficient concentration.

47 Independent control of the nuclear spin bath using nuclear magnetic resonance techn

48 n decoherence arises from decoherence of the nuclear spin bath, driven by nuclear-nuclear dipolar int

49 nductor spin-qubits with a nearly noise-free nuclear spin bath, previously achievable only in nuclear

50 nd above), the (29)Si and (13)C paramagnetic nuclear spin baths are decoupled.

51 Central spin decoherence caused by nuclear spin baths is often a critical issue in various

52 lly that many-body correlations in nanoscale nuclear spin baths produce identifiable signatures in de

53 In principle, polarizing all the nuclear spins can achieve this but is very difficult to

54 The proximal nuclear spins can be addressed and coupled individually

55 we show that the two-dimensional imaging of nuclear spins can be extended to a spatial resolution be

56 Hyperpolarization of nuclear spins can dramatically increase the NOE intensit

57 Nonresonant manipulation of nuclear spins can probe large volumes of sample situated

58 clear spin of the phosphorus donors, and the nuclear spins can then be repetitively read out electric

59 Current research dealing with the nuclear spin chemistry of H(2) incarcerated in buckyball

60 time after a sudden temperature jump, due to nuclear spin conversion.

61 rincipally caused by second- or fourth-order nuclear spin correlations, respectively.

62 red during turnover with 15N2 revealed a 15N nuclear spin coupled to the FeMo cofactor with a hyperfi

63 Quantum registers of nuclear spins coupled to electron spins of individual so

64 ethod for quantum control relies on electron-nuclear spin coupling and drives single-electron spin ro

65 by organic ligands) to suppress dipolar and nuclear-spin decoherence.

66 ermits direct observation of the breaking of nuclear spin degeneracy for the 1S0 and 3P0 optical cloc

67 The electronic and nuclear spin degrees of freedom of donor impurities in s

68 tors, on the other hand, have relatively low nuclear spin densities, making them an attractive platfo

69 easured magnetic force data into a 3D map of nuclear spin density, taking advantage of the unique cha

70 The nuclear spin-dependent contribution was 0.077(11) milliv

71 T gate has been challenging because of rapid nuclear spin dephasing and charge noise.

72 e polarization time and numerically modeling nuclear spin diffusion.

73 of Mn-Mn interactions and minimization of Mn-nuclear spin dipolar interactions result in unprecedente

74 fluctuations by employing electron spin and nuclear spin double-labeling techniques did not yield un

75 We show that the donor nuclear spin drives coherent rotations between the elect

76 observe long-lived time correlations in the nuclear spin dynamics, limited by nitrogen-vacancy spin-

77 synthetic study of the relationship between nuclear spin-electron spin distance and decoherence.

78 qubits where deep cooling of the mesoscopic nuclear spin ensemble is used to achieve long qubit cohe

79 Random fluctuations in the nuclear spin ensemble lead to fast spin decoherence in a

80 asurement and conditional preparation of its nuclear spin environment by post-selection.

81 l enable the reproducible preparation of the nuclear spin environment for repetitive control and meas

82 We report a method of preparing the nuclear spin environment that suppresses the relevant co

83 ap resonators, we drive Rabi oscillations on nuclear spins exclusively using electric fields by emplo

84 ents include reading and manipulating single nuclear spins, exploiting atomic clock transitions for r

85 Longer neighbour distances result in fewer nuclear spin flip-flops, a less fluctuating intra-crysta

86 nt that suppresses the relevant component of nuclear spin fluctuations below its equilibrium value by

87 strain-induced quadrupolar interactions make nuclear spin fluctuations much slower compared with latt

88 of spins in quantum dots by suppressing the nuclear spin fluctuations.

89 nts in an image must contain at least 10(12) nuclear spins for MRI-based microscopy, or 10(7) electro

90 We report a vanadium complex in a nuclear-spin free ligand field that displays two key pro

91 -of-concept system, we synthesized the novel nuclear spin-free complex [Cr(C3S5)3](3-) with precisely

92 chievable in transition metal complexes with nuclear spin-free environments.

93 ttribute this decrease to the absence of one nuclear spin-free ligand, which served to shield the van

94 additional benefit provided by the use of a nuclear spin-free ligand.

95 When nuclear spin-free ligands are employed, vanadium(IV) com

96 at solutions of 1-4 in SO2, a uniquely polar nuclear spin-free solvent, reveal T2 values of up to 152

97 volving dissipative decoupling of the single nuclear spin from its local environment.

98 These results transform weakly coupled nuclear spins from a source of decoherence into a reliab

99 spectra are sensitive to the changes to the nuclear-spin Hamiltonian that are induced by perturbatio

100 SABRE is a nuclear spin hyperpolarization technique based on the re

101 is demonstrated to efficiently transfer its nuclear spin hyperpolarization to nitrogen-15 in pyridin

102 tudy, we have combined NMR chemosensing with nuclear spin hyperpolarization.

103 cycle regulatory protein p27(Kip1) (p27) was nuclear spin hyperpolarized using dissolution dynamic nu

104 ced at pH = 6 with sulfite labeled with 33S (nuclear spin I = 3/2), followed by reoxidation by ferric

105 kHz (Larmor frequencies of (129)Xe and (1)H nuclear spins), (ii) <0.3 nm narrowed 200 W laser source

106 times of up to 14 mus despite abundant local nuclear spins, illuminating a new path toward proof-of-c

107 e limited only by naturally occurring (29)Si nuclear spin impurities.

108 of quantum states from an electron spin to a nuclear spin in a hybrid solid-state spin register with

109 lso recently been implemented using a single nuclear spin in a nitrogen-vacancy centre.

110 The qubit consists of a single (13)C nuclear spin in the vicinity of a nitrogen-vacancy color

111 n of the polarization of a laser beam by the nuclear spins in a liquid sample.

112 coherent manipulation of individual isolated nuclear spins in a solid-state environment even at room

113 nanoscale ensembles down to approximately 30 nuclear spins in atomically thin hexagonal boron nitride

114 esonance signals from individual electron or nuclear spins in complex biological molecules to readout

115 While polarization of individual nuclear spins in diamond and SiC reaches 99% and beyond,

116 nglement between an ensemble of electron and nuclear spins in isotopically engineered, phosphorus-dop

117 n and detection of many-body correlations of nuclear spins in nanoscale systems are highly challengin

118 use optical Faraday rotation (OFR) to probe nuclear spins in real time at high-magnetic field in a r

119 gn for a quantum processor based on electron-nuclear spins in silicon, with electrical control and co

120 r controlling neutral (31)P and (75)As donor nuclear spins in silicon.

121 erference and manipulation of electronic and nuclear spins in single-molecule circuits are heralding

122 de from gallium arsenide (GaAs), fluctuating nuclear spins in the host lattice are the dominant sourc

123 the hyperfine interaction with uncontrolled nuclear spins in the host lattice constitutes a major so

124 erence times or T2, due to interactions with nuclear spins in the local environment.

125 on processing such as the precise control of nuclear spins in the presence of strong quadrupole effec

126 tent with dephasing from the slowly evolving nuclear spins in the substrate.

127 igned for both excitation and observation of nuclear spins in two distinct magnetic fields in a singl

128 iance matrix of the spatial functions of the nuclear spin interactions that cause relaxation expresse

129 s an approximate symmetry on the fluctuating nuclear spin interactions.

130 restraints based on a variety of anisotropic nuclear spin interactions.

131 ivity stemming from the weak polarization of nuclear spins is a primary limitation of magnetic resona

132 Hyperpolarization (HP) of nuclear spins is critical for ultrasensitive nuclear mag

133 Deep cooling of electron and nuclear spins is equivalent to achieving polarization de

134 effect-the rotation of light polarization by nuclear spins-is readily measurable, and that it is enha

135 he dependence of bulk dielectric constant on nuclear spin isomer composition appears to be a previous

136 e constants of para-/orthohydrogen (p-/o-H2) nuclear spin isomerization have been measured by means o

137 n (oH(2)) and para-hydrogen (pH(2)), the two nuclear spin isomers of dihydrogen, requires a paramagne

138 increase the rate of interconversion of the nuclear spin isomers of H(2) by a factor of approximatel

139 of the measured spin noise reveal g-factors, nuclear spin, isotope abundance ratios, hyperfine splitt

140 nerated with a set of (2)H, (13)C, and (15)N nuclear spin-labeled tyrosine substrates.

141 in structural fluctuations that cause proton nuclear spin-lattice relaxation are remarkably constant

142 Nuclear spin-lattice relaxation in solid lead salts is m

143 Here we report measurements of the nuclear spin-lattice relaxation rate and Knight shift in

144 C-terminus, and paramagnetic enhancements of nuclear spin-lattice relaxation rates were measured for

145 elatively short time scales depending on the nuclear spin-lattice relaxation time T(1) in the range o

146 occur because of temperature-dependent 55Mn nuclear spin-lattice relaxation which causes averaging o

147 Interaction with nuclear spins leads to decoherence and information loss

148 inherently poor sensitivity and insufficient nuclear spin lifetime.

149 ns and eventually cancels the signals of the nuclear spins located nearby (within 1.6 nm distance).

150 rasensitive force microscopy (such as single-nuclear-spin magnetic resonance force microscopy).

151 ted by the time constant T1 for the decay of nuclear spin magnetization through contact with the ther

152 The larger nuclear spin means that a Si:Bi dopant provides a 20-dim

153 We demonstrated an ensemble nuclear spin memory in phosphorous-doped silicon, which

154 its of information encoded in an electron or nuclear spin memory.

155 We took advantage of a single nuclear-spin memory in order to obtain a 10-fold enhance

156 room-temperature hyperpolarization of (13)C nuclear spins observed via high-field magnetic resonance

157 Si:Bi electrons and hyperpolarized the I=9/2 nuclear spin of (209)Bi, manipulating both with pulsed m

158 The relaxation of the nuclear spin of 83Kr atoms (I = 9/2) is driven by quadru

159 stem is based on the combined electronic and nuclear spin of a single atom and is therefore deep in t

160 er et al. suppress this effect employing the nuclear spin of an NV centre for robust intermediate sto

161 rmation can be mapped onto and stored in the nuclear spin of the phosphorus donors, and the nuclear s

162 Electron and nuclear spins of donor ensembles in isotopically pure si

163 S = 1/2 electron spin of QA- with the I = 1 nuclear spins of the peptide nitrogens of two different

164 the spin order of p-H2 is transferred to the nuclear spins of the substrate molecule via a transient

165 These terms resulted from the effect of nuclear spin on rotational and vibrational relaxation.

166 pproaches have used quantum dots, donor-atom nuclear spins or electron spins; in these architectures,

167 integrated micromagnets, dynamic pumping of nuclear spins or the addition of a third quantum dot.

168 resonant control of the electric current by nuclear spin orientation was achieved with radiofrequenc

169 ition, because SiC is a binary crystal, homo-nuclear spin pairs are both diluted and forbidden from f

170 Nascent proton nuclear spin polarization (%PH ) of ca. 3.3 % and carbon

171 of HP(129)Xe with sufficiently high (129)Xe nuclear spin polarization (P(Xe)) remains a significant

172 approximately 10(2)-10(3) enhancement of the nuclear spin polarization and therefore increases sensit

173 Methods have been developed to enhance nuclear spin polarization but they typically require hig

174 to result from a hole-spin assisted dynamic nuclear spin polarization feedback process, where the st

175 eriment and theory that contributions to the nuclear spin polarization from the three-spin mixing and

176 The control of nuclear spin polarization is important to the design of

177 on in 2003, which by radically enhancing the nuclear spin polarization of (13)C nuclei in solution ca

178 (13)C nuclear spin polarization of 1-(13)C-phospholactate-d2 w

179 We observe bulk nuclear spin polarization of 6%, an enhancement of appro

180 th laser light it is possible to enhance the nuclear spin polarization of gaseous xenon by four to fi

181 In only a few tens of seconds, nuclear spin polarization P(15)N of up to approximately

182 nce presented here involves an initial (13)C nuclear spin polarization via photo-CIDNP followed by co

183 he sample was provided, exceptionally strong nuclear spin polarization was observed in NMR lines with

184 sm, we predict and observe a reversal of the nuclear spin polarization with only a few millitesla cha

185 ormous potential to achieve greatly enhanced nuclear spin polarization, but the presence of PAs and/o

186 ng to approximately 10% and approximately 7% nuclear spin polarization, respectively.

187 ecognized effect of chiral edge modes on the nuclear spin polarization.

188 erpolarization methods, which prepare excess nuclear spin polarization.

189 er blue-light exposure, exceptionally strong nuclear-spin polarization was developed in the resonance

190 Low thermal-equilibrium nuclear spin polarizations and the need for sophisticate

191 this particular study, the highest obtained nuclear spin polarizations were P =29% for(83)Kr and P=

192 The nuclear-spin polarizations achieved in these experiments

193 e quantum bits, but their strong coupling to nuclear spins produces high decoherence rates.

194 The nuclear spin provides an ideal memory qubit at room temp

195 trated robust initialization of electron and nuclear spin quantum bits (qubits) and transfer of arbit

196 nts, as well as a means to interact with the nuclear spin qubit.

197 Moreover, nuclear spin qubits could be well isolated from the elec

198 ly, this approach makes it possible to drive nuclear spin qubits either at their resonance frequency

199 ly, coherent interactions between individual nuclear spin qubits were observed and their excellent co

200 information processors using electronic- and nuclear-spin qubits.

201 derstanding of precisely how the position of nuclear spins relative to the electronic spin center aff

202 to the local dynamics via its impact on the nuclear spin relaxation and interaction with the nitroge

203 The nuclear spin relaxation data and polarization inversion

204 Nuclear spin relaxation experiments performed at 298K, 3

205 Proton nuclear spin relaxation has been for the first time exte

206 Paramagnetic Cu(II) ions enhance nuclear spin relaxation in a distance-dependent fashion

207 Nuclear spin relaxation measurements indicated that the

208 beta-Detected nuclear spin relaxation of (8)Li(+) has been used to stu

209 The kinetics of para-ortho conversion and nuclear spin relaxation of H 2 in chloroform- d 1 were i

210 MR and EPR data reveal improved electron and nuclear spin relaxation properties for bTbK within the h

211 istances is to utilize the modulation of the nuclear spin relaxation rate of water protons through th

212 intramolecular complex using backbone amide nuclear spin relaxation rates determined using NMR spect

213 site both for quantitative interpretation of nuclear spin relaxation rates in terms of local dynamics

214 Nuclear spin relaxation rates of (2) H and (139) La in L

215 Here, we use nuclear spin relaxation to investigate the distribution

216 over a wide range of time scales using (15)N nuclear spin relaxation, residual dipolar couplings, and

217 r NMR experiments caused by undesirably fast nuclear spin relaxation.

218 ution, using the orientational dependence of nuclear spin relaxation.

219 encode the logical qubit in three long-lived nuclear spins, repeatedly detect phase errors by non-des

220 sitivity limit of single molecules or single nuclear spins requires fundamentally new detection strat

221 ratio under ambient conditions allows single nuclear spin sensitivity to be achieved within seconds.

222 es have relied on hyperpolarizing long-lived nuclear spin species such as (13)C in small molecules.

223 his fast and efficient two-criterion method (nuclear spin-spin coupling and (13)C chemical shifts) wh

224 We compare the NMR indirect nuclear spin-spin coupling constants in strychnine calcu

225 d precise measurement of chemical shifts and nuclear spin-spin couplings correlated according to spin

226 The abrupt change of the 13C nuclear spin-spin relaxation time of the confined liquid

227 For 13C-enriched organics, the 13C nuclear spin-spin relaxation was demonstrated as a sensi

228 2 then regenerates 1 and 2 in a well-defined nuclear spin state.

229 1-(methyl-d)piperidine supports a long-lived nuclear spin state.

230 This optical approach for excitation of nuclear spin states allows an accurate measurement of th

231 d this limit to formation of coherent 'dark' nuclear spin states but experimental verification is lac

232 Since nuclear spin states can be preserved even if the spin ca

233 Long-lived nuclear spin states could greatly enhance the applicabil

234 ip-flop qubit, a combination of the electron-nuclear spin states of a phosphorus donor that can be co

235 Instead of the nuclear spin states of NMR, their multidimensional spect

236 the observation of stable coherence between nuclear spin states of ultracold fermionic sodium-potass

237 new approach enabled by manipulation of the nuclear spin states with radiofrequency pulses.

238 r 50:50 superpositions of the electronic and nuclear spin states.

239 isomers, ortho and para, that have different nuclear spin states.

240 ile keeping the system open to as many as 10 nuclear spin sublevels, we probed the non-equilibrium tw

241 e number of highly polarized spins in liquid nuclear-spin systems at finite temperature.

242 are unexpectedly dominated by hyperpolarized nuclear spins that align along the ferromagnet's magneti

243 reconstructed from NMR signals generated by nuclear spins that precess in a static magnetic field B0

244 synchronously with the precession of a given nuclear spin, the interaction to this spin is selectivel

245 t in inductive detection of weakly polarized nuclear spins, the vast majority of clinical MRI scanner

246 ired electrons of nitroxide free radicals to nuclear spins through microwave irradiation near the ele

247 spin are inevitably affected by the lattice nuclear spins through the hyperfine interaction, while t

248 esonance with hyperpolarization of the (31)P nuclear spin to obtain an initial state of sufficient pu

249 e allows the quantum state of electronic and nuclear spins to be controlled on the timescale of nanos

250 dividual electron spin and nearby individual nuclear spins to create a controllable quantum register.

251 nding to an electronic spin and an ancillary nuclear spin, to demonstrate room temperature magnetic r

252 s used in ENDOR experiments to determine the nuclear spin transition frequencies of (2)H introduced f

253 rence time observed here is long enough that nuclear spins travelling at 9 kilometres per hour in a c

254 magnetometers are unable to detect a single nuclear spin unless the tip-to-sample separation is made

255 k-15N nuclear Overhauser effects for the 15N nuclear spins using proton-detected heteronuclear NMR sp

256 arization of exogenous unpaired electrons to nuclear spins via microwave irradiation of electron-nucl

257 Two types of (13)C nuclear spins were identified with different spin-lattic

258 Their isotopes have mainly zero nuclear spin, which enhances the electronic spin coheren

259 arated into a set of individual proximal 13C nuclear spins, which are coupled coherently to the elect

260 electron spin, and the remainder of the 13C nuclear spins, which cause the loss of coherence.

261 monstrating strong isotropic coupling of the nuclear spin with the paramagnetic center.

262 As an example, we have detected nuclear spins with nanometer-scale precision.

263 nts selected defects with favourably located nuclear spins with particularly strong hyperfine couplin

264 entional MRI is based on the manipulation of nuclear spins with radio-frequency fields, and the subse

265 et-up is sensitive enough to detect a single nuclear spin within ten milliseconds of data acquisition

266 amond enables detection of individual target nuclear spins, yet limits the spectral resolution of nuc