Optically induced dynamic nuclear spin polarisation in diamond

Scheuer, Jochen; Schwartz, Ilai; Chen, Qiong; Schulze-Sünninghausen, David; Carl, Patrick; Höfer, Peter; Retzker, Alexander; Sumiya, Hitoshi; Isoya, Junichi; Luy, Burkhard; Plenio, Martin B.; Naydenov, Boris; Jelezko, Fedor

doi:10.1088/1367-2630/18/1/013040

Cited by 79 publications

(148 citation statements)

References 27 publications

Supporting

Mentioning

138

Contrasting

Unclassified

Order By: Relevance

“…Enhancements of ≈2 × 10 5 have been observed for optically pumped microwave-driven DNP using NV − at low fields [9], and approximately 45 at high field via sample shuttling [56]: the primary advantage of the present work is projected field-insensitivity without the requirement for expensive highfrequency microwave components (>200 GHz), cryogenics, or sample shuttling at typical NMR fields.…”

Section: Polarization Efficiencymentioning

confidence: 79%

All-optical hyperpolarization of electron and nuclear spins in diamond

et al. 2017

View full text Add to dashboard Cite

Low thermal polarization of nuclear spins is a primary sensitivity limitation for nuclear magnetic resonance. Here we demonstrate optically pumped (microwave-free) nuclear spin polarization of 13 C and 15 N in 15 N-doped diamond.15 N polarization enhancements up to −2000 above thermal equilibrium are observed in the paramagnetic system N s 0 . Nuclear spin polarization is shown to diffuse to bulk 13 C with NMR enhancements of −200 at room temperature and −500 at 240 K, enabling a route to microwave-free high-sensitivity NMR study of biological samples in ambient conditions.

show abstract

Section: Polarization Efficiencymentioning

confidence: 79%

All-optical hyperpolarization of electron and nuclear spins in diamond

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The latter can be prepared by polarisation transfer from the electron spin, see for example [29][30][31], or by dynamical nuclear polarisation (DNP) [42][43][44]. The three-body nuclear propagator can be achieved by applying the sequence in Eq.…”

Section: Numerical Resultsmentioning

confidence: 99%

Arbitrary nuclear-spin gates in diamond mediated by a nitrogen-vacancy-center electron spin

2017

View full text Add to dashboard Cite

We show that arbitrary N-qubit interactions among nuclear spins can be achieved efficiently in solid state quantum platforms, such as nitrogen vacancy centers in diamond, by exerting control only on the electron spin coupled to the nuclei. This allows to exploit nuclear spins as robust quantum registers and the direct measurement of nuclear many-body correlators. The method takes advantage of recently introduced dynamical decoupling techniques and avoids the necessity of external, slow, control on the nuclei. Our protocol is general, being applicable to other nuclear spin based platforms with electronic spin defects acting as mediators as silicon carbide.

show abstract

“…Finally, using these low-transverse-field anticrossings, we introduce an alternate route to polarize the nuclear spin host of the nitrogen-vacancy center [21,[29][30][31][32]. This method articulates successive shifting of the magnetic field and radiofrequency pulses iteratively to transfer the spin polarization into a single nuclear state, similar to methods explored for optical quantum dots [33][34][35].…”

Section: (A)mentioning

confidence: 99%

Diamond-nitrogen-vacancy electronic and nuclear spin-state anticrossings under weak transverse magnetic fields

et al. 2016

View full text Add to dashboard Cite

We report on detailed studies of electronic and nuclear spin states in the diamond-nitrogen-vacancy (NV) center under weak transverse magnetic fields. We numerically predict and experimentally verify a previously unobserved NV hyperfine level anticrossing (LAC) occurring at bias fields of tens of gauss-two orders of magnitude lower than previously reported LACs at ∼500 and ∼1000 G axial magnetic fields. We then discuss how the NV ground-state Hamiltonian can be manipulated in this regime to tailor the NV's sensitivity to environmental factors and to map into the nuclear spin state. DOI: 10.1103/PhysRevA.94.021401 Nitrogen-vacancy (NV) defect centers in diamond are optically polarizable quantum systems with spin-dependent fluorescence. Using electron spin resonance (ESR) under ambient conditions, sensitivity to electric fields [1][2][3][4], transverse and axial magnetic fields [5][6][7][8][9][10], temperature [11][12][13][14], strain [15], and pressure [16] have been observed via resonance frequency shifts of the NV ground-state manifold. Nonseparable sensitivity to multiple environmental factors is problematic when it comes to using the NV as a sensor. However, the Hamiltonian governing the measurable frequency shifts can be tailored to enhance (or to suppress) sensitivity to different physical phenomena. A magnetic bias field applied parallel or perpendicular [B || or B ⊥ as shown in Fig. 1(a)] to the NV's axis in the diamond crystal lattice energetically separates the spin states and increases sensitivity to magnetic or electric fields, respectively.In this Rapid Communication, we investigate an unexplored weak-field regime in which electronic spin ground-state energy level splittings are on par with the Zeeman shift induced by an applied magnetic field. Here we account for both the electron and the nuclear spin of the NV, which reveals complex dynamics of nuclear spin state degeneracy and previously unobserved hyperfine level anticrossings. These features occur at a low magnetic field (B ⊥ 40 G) as compared to the B || ∼ 500 and B || ∼ 1000 G excited-and ground-state crossings [17][18][19][20], which have been used for nuclear spin polarization, providing increased sensitivity to resonance shifts through narrower effective linewidth and increased contrast [21][22][23][24]. We find excellent agreement between experiment and theory and discuss the utility of the nuclear spin degeneracy regime toward NV sensing applications and solid-state atomic memories based on nuclear spin polarization. While the results described here are specific to the NV, similar anticrossings are expected in any spin-1 (or higher) defect center that shows hyperfine level splitting on the same order of magnitude as double-electron spin flip anticrossings.The NV is a two-site defect with a spin-1 electronic ground state, which is magnetically coupled to nearby nuclear spins.For a single NV orientation, energy level shifts are described by the following spin Hamiltonian of the ground triplet state in the presence of magnetic, electric, ...

show abstract

Optically induced dynamic nuclear spin polarisation in diamond

Cited by 79 publications

References 27 publications

All-optical hyperpolarization of electron and nuclear spins in diamond

All-optical hyperpolarization of electron and nuclear spins in diamond

Arbitrary nuclear-spin gates in diamond mediated by a nitrogen-vacancy-center electron spin

Diamond-nitrogen-vacancy electronic and nuclear spin-state anticrossings under weak transverse magnetic fields

Contact Info

Product

Resources

About