Statistically modeling optical linewidths of nitrogen vacancy centers in microstructures

Kasperczyk, Mark; Zuber, Josh A.; Barfuss, Arne; Kölbl, Johannes; Yurgens, Viktoria; Flågan, Sigurd; Jakubczyk, Tomasz; Shields, Brendan; Warburton, Richard J.; Maletinsky, Patrick

doi:10.1103/physrevb.102.075312

Cited by 20 publications

(35 citation statements)

References 26 publications

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“…This result emphasizes the excellent optical quality and low charge-noise environment of the created NV centers. Similar probability values are obtained by using a Bayesian approach for analyzing linewidth distributions [26]; with this approach, we determine the probability that the next measured line has a linewidth below 100 MHz of 93.4%, 92.0%, and 77.7% for sample A, B, and C, respectively. With the same approach we also calculate the probability that the median of the distributions is below this threshold, giving a probability of above 99.9% for each of the three samples.…”

Section: Linewidth Characterizationmentioning

confidence: 95%

“…A recent study demonstrated progress in obtaining NV centers with linewidths of approximately 200 MHz in 3.8 µm-thick diamond membranes [17]. In even thinner structures, linewidths down to 250 MHz were reported with a new approach based on implanting nitrogen after micro-structuring [26] and also in samples structured with a slow etching procedure [30]. To the best of our knowledge, narrower linewidths than these have never been reported in micron-thick diamond.…”

Section: Introductionmentioning

confidence: 98%

“…A widely employed technique to create NV centers at precisely controlled depths consists of nitrogen-ion implantation followed by high-temperature annealing [22]. The technique is well suited for creating NV centers for sensing applications [23,24], but has recently been shown to create NV populations where approximately half of the NV centers show spectral diffusion above a few GHz [25,26]. In addition, the NV centers formed from the implanted nitrogen ions have on average much poorer optical quality than their counterparts formed from the native nitrogen [25,26], suggesting that vicinity to the fabrication-related damage plays a crucial role for the spectral diffusion.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, the inhomogeneously-broadened linewidth distribution in unprocessed bulk samples irradiated by ions or electrons is characterized by linewidths on the order of 100 MHz [17,25,26], disregarding half of the population with above-GHz linewidths for the nitrogenimplanted samples. After thinning the samples down to less than a micron by reactive ion etching, most of the observed NVs are characterized by > 1 GHz linewidths [13].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Low charge-noise nitrogen-vacancy centers in diamond created using laser writing with a solid-immersion lens

Yurgens,

Zuber,

Flågan

et al. 2021

Preprint

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We report on pulsed-laser induced generation of nitrogen-vacancy (NV) centers in diamond facilitated by a solid-immersion lens (SIL). The SIL enables laser writing at energies as low as 5.8 nJ per pulse and allows vacancies to be formed close to a diamond surface without inducing surface graphitization. We operate in the previously unexplored regime where lattice vacancies are created following tunneling breakdown rather than multiphoton ionization. We present three samples in which NV-center arrays were laser-written at distances between ∼1 µm and 40 µm from a diamond surface, all presenting narrow distributions of optical linewidths with means between 61.0 MHz and 78.3 MHz. The linewidths include the effect of long-term spectral diffusion induced by a 532 nm repump laser for charge-state stabilization, thereby emphasizing the particularly low charge-noise environment of the created color centers. Such high-quality NV centers are excellent candidates for practical applications employing two-photon quantum interference with separate NV centers. Finally, we propose a model for disentangling power broadening from inhomogeneous broadening in the NV center optical linewidth.

show abstract

Section: Linewidth Characterizationmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low charge-noise nitrogen-vacancy centers in diamond created using laser writing with a solid-immersion lens

Yurgens,

Zuber,

Flågan

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…This inhomogeneous broadening of the ZPL is a consequence of a fluctuating charge environment presumably caused by fabrication-induced surface damage [41,44]. Increasing the quality of the crystalline environment has proven to be beneficial [53][54][55].…”

Section: Introductionmentioning

confidence: 99%

High quality-factor diamond-confined open microcavity

Flågan,

Riedel,

Javadi

et al. 2021

Preprint

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With a highly coherent, optically addressable electron spin, the nitrogen vacancy (NV) centre in diamond is a promising candidate for a node in a quantum network. However, the NV centre is a poor source of coherent single photons owing to a long radiative lifetime, a small branching ratio into the zero-phonon line (ZPL) and a poor extraction efficiency out of the high-index host material. In principle, these three shortcomings can be addressed by resonant coupling to a single mode of an optical cavity. Utilising the weak-coupling regime of cavity electrodynamics, resonant coupling between the ZPL and a single cavity-mode enhances the transition rate and branching ratio into the ZPL. Furthermore, the cavity channels the light into a well-defined mode thereby facilitating detection with external optics. Here, we present an open Fabry-Perot microcavity geometry containing a single-crystal diamond membrane, which operates in a regime where the vacuum electric field is strongly confined to the diamond membrane. There is a field anti-node at the diamond-air interface. Despite the presence of surface losses, quality factors exceeding 120 000 and a finesse F = 11 500 were observed. We investigate the interplay between different loss mechanisms, and the impact these loss channels have on the performance of the cavity. This analysis suggests that the "waviness" (roughness with a spatial frequency comparable to that of the microcavity mode) is the mechanism preventing the quality factors from reaching even higher values. Finally, we apply the extracted cavity parameters to the NV centre and calculate a predicted Purcell factor exceeding 150.

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Low-Charge-Noise Nitrogen-Vacancy Centers in Diamond Created Using Laser Writing with a Solid-Immersion Lens

et al. 2021

Self Cite

View full text Add to dashboard Cite

We report on pulsed-laser-induced generation of nitrogenvacancy (NV) centers in diamond facilitated by a solid-immersion lens (SIL). The SIL enables laser writing at energies as low as 5.8 nJ per pulse and allows vacancies to be formed close to a diamond surface without inducing surface graphitization. We operate in the previously unexplored regime, where lattice vacancies are created following tunneling breakdown rather than multiphoton ionization. We present three samples in which NV center arrays were laserwritten at distances between ∼1 and 40 μm from a diamond surface, all presenting narrow distributions of optical linewidths with means between 62.1 and 74.5 MHz. The linewidths include the effect of long-term spectral diffusion induced by a 532 nm repump laser for charge-state stabilization, thereby emphasizing the particularly low-charge-noise environment of the created color centers. Such high-quality NV centers are excellent candidates for practical applications employing two-photon quantum interference with separate NV centers. Finally, we propose a model for disentangling power broadening from inhomogeneous broadening in the NV center optical linewidth.

show abstract

Statistically modeling optical linewidths of nitrogen vacancy centers in microstructures

Cited by 20 publications

References 26 publications

Low charge-noise nitrogen-vacancy centers in diamond created using laser writing with a solid-immersion lens

Low charge-noise nitrogen-vacancy centers in diamond created using laser writing with a solid-immersion lens

High quality-factor diamond-confined open microcavity

Low-Charge-Noise Nitrogen-Vacancy Centers in Diamond Created Using Laser Writing with a Solid-Immersion Lens

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