Detecting and Polarizing Nuclear Spins with Double Resonance on a Single Electron Spin

London, Paz; Scheuer, Jochen; Cai, Jianming; Schwarz, Ilai; Retzker, Alex; Plenio, Martin B.; Katagiri, Masayuki; Teraji, Tokuyuki; Koizumi, Satoshi; Isoya, Junichi; Fischer, Ran; McGuinness, Liam P.; Naydenov, Boris; Jelezko, Fedor

doi:10.1103/physrevlett.111.067601

Cited by 231 publications

(329 citation statements)

References 32 publications

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“…These effects have been neglected here for simplicity, but exploring these effects in the context of the phonon antenna mechanism could lead to an even more sophisticated principle, involving transient, broadband sampling of the spectral function and evolving exciton spectra and localisation lengths which could, potentially, activate or deactivate relaxation pathways dynamically. Finally, the concept of using coherent interactions to alter the sampling of a (fixed) environmental spectral function could be readily achieved in a variety of atomic and condensed matter systems [33,37], and could also be used as a sensitive probe for measuring spectral functions by measuring transport rates as functions of a controllable coupling parameter.…”

Section: Local Energiesmentioning

confidence: 99%

“…a different electron or nuclear spin). This problem may be overcome by continuous driving of the electron spin in the sensor at a strength that leads to a splitting of dressed states that matches the externally generated signal and thus permits a strong response of the sensor (transitions between upper and lower dressed state) [33][34][35].…”

Section: Local Energiesmentioning

confidence: 99%

See 1 more Smart Citation

Exploiting Structured Environments for Efficient Energy Transfer: The Phonon Antenna Mechanism

Rey

Chin

Huelga

et al. 2013

J. Phys. Chem. Lett.

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A non-trivial interplay between quantum coherence and dissipative environment-driven dynamics is becoming increasingly recognised as key for efficient energy transport in photosynthetic pigment-protein complexes, and converting these biologically-inspired insights into a set of design principles that can be implemented in artificial light-harvesting systems has become an active research field. Here we identify a specific design principlethe phonon antenna -that demonstrates how inter-pigment coherence is able to modify and optimize the way that excitations spectrally sample their local environmental fluctuations. We place this principle into a broader context and furthermore we provide evidence that the Fenna-Matthews-Olson complex of green sulphur bacteria has an excitonic structure that is close to such an optimal operating point, and suggest that this general design principle might well be exploited in other biomolecular systems. Introduction.-Experimental techniques such as optical 2D Fourier Transform spectroscopy have recently begun to probe the ultrafast photophysics of energy transport in a range of pigment-protein complexes (PPCs) taken from photosynthetic green sulphur bacteria, marine algae and higher plants [1][2][3][4]. All of the key photosynthetic light reactions (photon capture, energy transport and charge generation) are carried out in PPC structures [5,6], and the often > 90% quantum efficiency with which they carry out these functions has created considerable interest in understanding and exploiting their design features for artifical solar energy applications [5,7]. Surprisingly, recent experiments have found direct evidence for long-lasting quantum coherence amongst the excitons which transport energy in these complexes. In the case of the Fenna-MatthewsOlson (FMO) complex, these coherences can persist on picosecond timescales in cryogenic conditions and are still observable at room temperatures [2,8]. Several phenomenological theories have subsequently shown that there is an optimal mixture of coherent inter-pigment energy transport and stochastic environmental noise that may lead to faster and higher-yield energy delivery in PPC architectures, suggesting that quantum effects may underpin their efficient function [9][10][11][12][13][14][15]. Microscopic investigations have also recently shown the key role of both discrete and continuous environmental fluctuation spectra in stabilising the long-lasting coherences observed in spectroscopy as well as facilitating efficient transport [16][17][18][19][20].

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Section: Local Energiesmentioning

confidence: 99%

Section: Local Energiesmentioning

confidence: 99%

Exploiting Structured Environments for Efficient Energy Transfer: The Phonon Antenna Mechanism

Rey

Chin

Huelga

et al. 2013

J. Phys. Chem. Lett.

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“…25,[39][40][41][42][43][44][45][46] At the same time, an alternative approach based on the continuous dynamical decoupling has been extensively investigated. 11,[47][48][49][50][51][52][53][54][55][56][57][58] Within this approach, strong resonant driving is applied to the NV center. The resulting fast Rabi oscillations of the NV spin, similarly to the flip-flops induced by the decoupling pulses, average out the interaction with the environment, and significantly extend the spin coherence time.…”

Section: Introductionmentioning

confidence: 99%

Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond

Mkhitaryan

Dobrovitski

2014

Phys. Rev. B

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We study dynamics of the electron spin of a nitrogen-vacancy (NV) center subjected to a strong driving field with periodically reversed direction (train of rotary echoes). We use analytical and numerical tools to analyze in detail the form and timescales of decay of the rotary echo train, modeling the decohering spin environment as a random magnetic field. We demonstrate that the problem can be exactly mapped onto a model of spin 1 coupled to a single bosonic mode with imaginary frequency. This mapping allows comprehensive analytical investigation beyond the standard BlochRedfield-type approaches. We explore the decay of the rotary echo train under assumption of strong driving, and identify the most important regimes of the decay. The analytical results are compared with the direct numerical simulations to confirm quantitative accuracy of our study. We present the results for realistic environment of substitutional nitrogen atoms (P1 centers), and provide a simplified but accurate description for decay of the rotary echo train of the NV center's spin. The approach presented here can also be used to study decoherence and longitudinal relaxation of other spin systems under conditions of strong driving.

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“…Nevertheless, polarization transfer to nuclei outside of the diamond itself still poses many challenges. It was also shown that nuclear polarization can improve NV based measurements, by increasing the NV spin free evolution/Ramsey coherence time [10]. …”

mentioning

confidence: 99%

“…NV based polarization of 13 C nuclei in the diamond can be achieved using the NOVEL (nuclear orientation via electron spin locking) scheme [11,12], allowing for nuclear sensing [10] and bulk polarization [13]. During this sequence a spin-lock [14] (SL) is applied on the NV spin with a SL Rabi frequency equal to the nuclear Larmor frequency, resulting in the rotating-frame/lab-frame Hartmann-Hahn polarization transfer condition.…”

mentioning

confidence: 99%

Low-Field Nuclear Polarization Using Nitrogen Vacancy Centers in Diamonds

Hovav¹,

Naydenov²,

Jelezko³

et al. 2018

Phys. Rev. Lett.

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It was recently demonstrated that bulk nuclear polarization can be obtained using Nitrogen Vacancy (NV) color centers in diamonds, even at ambient conditions. This is based on the optical polarization of the NV electron spin, and using several polarization transfer methods. One such method is the NOVEL sequence, where a spin-locked sequence is applied on the NV spin, with a microwave power equal to the nuclear precession frequency. This was performed at relatively high fields, to allow for both polarization transfer and noise decoupling. As a result, this scheme requires accurate magnetic field alignment in order preserve the NV properties. Such a requirement may be undesired or impractical in many practical scenareios. Here we present a new sequence, termed the refocused NOVEL, which can be used for polarization transfer (and detection) even at low fields. Numerical simulations are performed, taking into account both the spin Hamiltonian and spin-decoherence, and we show that, under realistic parameters, it can outperform the NOVEL sequence. [2,3] due to its ability to dramatically increase the signals in nuclear magnetic resonance spectroscopy (NMR) and imaging (MRI) experiments. This relies on polarization transfer from electrons to their neighboring nuclei via microwave (MW) irradiation. The DNP process is typically performed at cryogenic temperatures, in order to gain high initial electron Boltzmann polarization. An alternative approach is to use high non-equilibrium polarization [4,5], allowing high polarizations to be achieved even at ambient conditions. It was recently demonstrated that NitrogenVacancy (NV) color centers in diamond [6][7][8] can be used as such a polarization source, based on the ability to polarize the NV electronic S = 1 spin to its |0 ground state using optical illumination with 532 nm green light. Such an NV based polarization source offers many advantages: it allows fast electron polarization; it is extremely stable; it can be used in combination with coherent polarization schemes due to the NV spin long coherence times [9]; and it relies on a relatively simple experimental setup. Nevertheless, polarization transfer to nuclei outside of the diamond itself still poses many challenges. It was also shown that nuclear polarization can improve NV based measurements, by increasing the NV spin free evolution/Ramsey coherence time [10]. Dynamic Nuclear Polarization (DNP) [1] has gained renewed interest in recent yearsNV based polarization of 13 C nuclei in the diamond can be achieved using the NOVEL (nuclear orientation via electron spin locking) scheme [11,12], allowing for nuclear sensing [10] and bulk polarization [13]. During this sequence a spin-lock [14] (SL) is applied on the NV spin with a SL Rabi frequency equal to the nuclear Larmor frequency, resulting in the rotating-frame/lab-frame Hartmann-Hahn polarization transfer condition. These NV based experiments were performed at relatively high fields (around 5000 Gauss) to allow for efficient SL noise decoupling together with the Har...

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Detecting and Polarizing Nuclear Spins with Double Resonance on a Single Electron Spin

Cited by 231 publications

References 32 publications

Exploiting Structured Environments for Efficient Energy Transfer: The Phonon Antenna Mechanism

Exploiting Structured Environments for Efficient Energy Transfer: The Phonon Antenna Mechanism

Decay of the rotary echoes for the spin of a nitrogen-vacancy center in diamond

Low-Field Nuclear Polarization Using Nitrogen Vacancy Centers in Diamonds

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