State-selective intersystem crossing in nitrogen-vacancy centers

Goldman, Michael; Doherty, Marcus W.; Sipahigil, Alp; Yao, Norman Y.; Bennett, Steven; Manson, Neil B.; Kubanek, Alexander; Lukin, Mikhail D.

doi:10.1103/physrevb.91.165201

Cited by 119 publications

(113 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2(a). The T 5 scaling of Γ Add indicates that the additional Rabi decoherence is due primarily to mixing between jE x i and jE y i mediated by two E-symmetric phonons [11,22]. We infer Γ Add =2π ¼ −0.34 AE 1.87 MHz at 5.8 K (95% confidence interval), indicating that phonon-induced mixing is frozen out at low temperature.…”

mentioning

confidence: 79%

“…We infer Γ Add =2π ¼ −0.34 AE 1.87 MHz at 5.8 K (95% confidence interval), indicating that phonon-induced mixing is frozen out at low temperature. There also exists a one-phonon emission process whose contribution to the mixing rate scales as Δ 2 xy T [22]. This contribution is negligible in our experiment because of the small density of states for phonons of frequency Δ xy ¼ 3.9 GHz [23].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Phonon-Induced Population Dynamics and Intersystem Crossing in Nitrogen-Vacancy Centers

et al. 2015

Self Cite

View full text Add to dashboard Cite

mentioning

confidence: 79%

mentioning

confidence: 99%

Phonon-Induced Population Dynamics and Intersystem Crossing in Nitrogen-Vacancy Centers

et al. 2015

Self Cite

View full text Add to dashboard Cite

“…These values all include the detrimental effect of imperfect spin initialization (we infer ∼85% spin purity). With improved spin purity, multi-SCC should approach a maximum SNR∼1.9, limited by the intrinsic ∼10:1 spin-dependent ISC branching ratio 30 . This ideal case corresponds to an upper bound of the single-shot spin readout fidelity of 90%.…”

mentioning

confidence: 99%

Near-infrared-assisted charge control and spin readout of the nitrogen-vacancy center in diamond

et al. 2016

View full text Add to dashboard Cite

We utilize nonlinear absorption to design all-optical protocols that improve both charge state initialization and spin readout for the nitrogen-vacancy (NV) center in diamond. Non-monotonic variations in the equilibrium charge state as a function of visible and near-infrared optical power are attributed to competing multiphoton absorption processes. In certain regimes, multicolor illumination enhances the steady-state population of the NV's negative charge state above 90%. At higher NIR intensities, selective ionization of the singlet manifold facilitates a protocol for spin-to-charge conversion that dramatically enhances the spin readout fidelity. We demonstrate a 6-fold increase in the signal-to-noise ratio for single-shot spin measurements and predict an orders-of-magnitude experimental speedup over traditional methods for emerging applications in magnetometry and quantum information science using NV spins.

show abstract

“…At the resonant microwave frequency (2.87 GHz), these shelving transitions result in a temporary decrease in the occupation of the NV − ground state, and thus to a decrease in the one-photon ionization photocurrent of NV -. Here we assume that the photoionization cross section from the 1 E shelving state to the CB is low, although 1 E has been recently estimated to be located approximately 2.3 eV below the CB [29] and could therefore theoretically be ionized by 2.75 eV photons. However, the negative sign of magnetic resonances observed in d-PDMR [ Fig.…”

mentioning

confidence: 99%

Enhanced photoelectric detection of NV magnetic resonances in diamond under dual-beam excitation

et al. 2017

View full text Add to dashboard Cite

The core issue for the implementation of NV center qubit technology is a sensitive readout of the NV spin state. We present here a detailed theoretical and experimental study of NV center photoionization processes, used as a basis for the design of a dual-beam photoelectric method for the detection of NV magnetic resonances (PDMR). This scheme, based on NV one-photon ionization, is significantly more efficient than the previously reported single-beam excitation scheme. We demonstrate this technique on small ensembles of ∼10 shallow NVs implanted in electronic grade diamond (a relevant material for quantum technology), on which we achieve a cw magnetic resonance contrast of 9%-three times enhanced compared to previous work. The dual-beam PDMR scheme allows independent control of the photoionization rate and spin magnetic resonance contrast. Under a similar excitation, we obtain a significantly higher photocurrent, and thus an improved signal-to-noise ratio, compared to single-beam PDMR. Finally, this scheme is predicted to enhance magnetic resonance contrast in the case of samples with a high proportion of substitutional nitrogen defects, and could therefore enable the photoelectric readout of single NV spins. The negatively charged nitrogen-vacancy (NV -) center in diamond has attracted particular attention as a room temperature solid-state qubit [1] that can be read out by optical detection of magnetic resonances (ODMR) [2]. Numerous applications in the field of solid-state quantum information processing [3] and sensing [4][5][6][7][8][9][10] are being studied.We have recently developed a method for the photoelectric detection of NV -electron spin magnetic resonances (PDMR) [11], performed directly on a diamond chip equipped with electric contacts and based on the electric detection of charge carriers promoted to the diamond conduction band (CB) by two-photon ionization of NV -under green illumination (single-beam PDMR, or s-PDMR) (Fig. 1) To explore the photophysics behind the PDMR scheme and optimize its performances, we performed ab initio calculations of N 0 s , NV -, and NV 0 ionization cross sections, and compared the results to experimental characterizations of the ionization bands. In this way we demonstrate that under blue illumination, the ionization of NV -can be achieved by a more effective one-photon process, leading to a higher photocurrent-and therefore a higher signal-to-noise (S/N) ratio-than green illumination of identical power. Based on this result, we designed a dual-beam PDMR (d-PDMR) scheme (Fig. 1), in which pulsed blue light directly ionizes NV -and converts the resultant NV 0 back to NV -by one-photon processes, while simultaneous cw green illumination independently controls the MR contrast. We validated this scheme on small ensembles of ∼10 shallow NV -centers implanted in electronic grade diamond, which represents a downscaling of the photoelectric detection by a factor ∼10 5 compared to a previous publication [11]. The d-PDMR scheme leads to enhanced MR contrast under low power illu...

show abstract

State-selective intersystem crossing in nitrogen-vacancy centers

Cited by 119 publications

References 44 publications

Phonon-Induced Population Dynamics and Intersystem Crossing in Nitrogen-Vacancy Centers

Phonon-Induced Population Dynamics and Intersystem Crossing in Nitrogen-Vacancy Centers

Near-infrared-assisted charge control and spin readout of the nitrogen-vacancy center in diamond

Enhanced photoelectric detection of NV magnetic resonances in diamond under dual-beam excitation

Contact Info

Product

Resources

About