Phase relaxation in the vicinity of the dynamic instability: anomalous temperature dependence of zero-phonon line

Hizhnyakov, V.; Boltrushko, V.; Kaasik, Helle; Силдос, И.

doi:10.1016/j.jlumin.2003.12.025

Cited by 14 publications

(12 citation statements)

References 27 publications

(40 reference statements)

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“…An additional T 2 term has to be added to accurately describe the ensemble measurements at temperatures below 100 K, which might be associated with inhomogeneous broadening effects. According to Hizhnyakov et al [29][30][31] a T 4 law is expected for quadratic electron-phonon coupling of a 1g phonons and was also experimentally confirmed for SiV − centres [27]. In section 5 we present further evidence for the electron-phonon coupling of the optical transition being dominated by a 1g phonons.…”

Section: Snv Centressupporting

confidence: 62%

Spectroscopic investigations of negatively charged tin-vacancy centres in diamond

et al. 2020

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The recently discovered negatively charged tin-vacancy centre in diamond is a promising candidate for applications in quantum information processing (QIP). We here present a detailed spectroscopic study encompassing single photon emission and polarisation properties, the temperature dependence of emission spectra as well as a detailed analysis of the phonon sideband and Debye-Waller factor. Using photoluminescence excitation spectroscopy we probe an energetically higher lying excited state and prove fully lifetime limited linewidths of single emitters at cryogenic temperatures. For these emitters we also investigate the stability of the charge state under resonant excitation. These results provide a detailed insight into the spectroscopic properties of the SnV − centre and lay the foundation for further studies regarding its suitability in QIP.

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Section: Snv Centressupporting

confidence: 62%

Spectroscopic investigations of negatively charged tin-vacancy centres in diamond

et al. 2020

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“…29 No such spin-orbit interaction can be present in the singlet levels involved in the NV − center's IR ZPL. It is possible that the ∝ T 3 temperature variation of the IR ZPL arises from the presence of a strong Jahn-Teller effect, 30 which is consistent with the dramatic asymmetry of photoabsorption and PL spectra of the IR ZPL's vibrational sideband that is currently poorly understood. 31 However, substantial further investigation is required before this conclusion can be drawn.…”

Section: Results and Analysismentioning

confidence: 81%

Strain broadening of the 1042-nm zero phonon line of the NV− center in diamond: A promising spectroscopic tool for defect tomography

et al. 2017

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The negatively charged nitrogen-vacancy (NV − ) center in diamond is a promising candidate for many quantum applications. Here, we examine the splitting and broadening of the center's infrared (IR) zero-phonon line (ZPL). We develop a model for these effects that accounts for the strain induced by photo-dependent microscopic distributions of defects. We apply this model to interpret observed variations of the IR ZPL shape with temperature and photoexcitation conditions. We identify an anomalous temperature dependent broadening mechanism and that defects other than the substitutional nitrogen center significantly contribute to strain broadening. The former conclusion suggests the presence of a strong Jahn-Teller effect in the center's singlet levels and the latter indicates that major sources of broadening are yet to be identified. These conclusions have important implications for the understanding of the center and the engineering of diamond quantum devices. Finally, we propose that the IR ZPL can be used as a sensitive spectroscopic tool for probing microscopic strain fields and performing defect tomography.

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“…If the final state is dynamically unstable (here the frequency of the resonant mode is imaginary), then the broadening of the ZPL, induced by the vibronic interaction, does not tend to zero at T-0, resulting in the remarkable homogeneous width at T ¼ 0. The anomalous temperature dependence of ZPL of the described type has been observed in the optical spectra of NV centres in diamond [10][11][12], where this dependence was explained by the soft dynamics of the Mexican hat-type potential energy associated with the Jahn-Teller effect in the excited state.…”

Section: Introductionmentioning

confidence: 72%

“…In the case of the soft dynamics in the final state, which has previously been studied [10][11][12] , it was found that here ZPL is characterized by an anomalous temperature dependence: instead of the T 7 -type broadening in the low-temperature limit, one gets the T 3 -dependence; the T 4 -type temperature shift of the position of ZPL is also replaced by a much less dependent shift with temperature. If the final state is dynamically unstable (here the frequency of the resonant mode is imaginary), then the broadening of the ZPL, induced by the vibronic interaction, does not tend to zero at T-0, resulting in the remarkable homogeneous width at T ¼ 0.…”

Section: Introductionmentioning

confidence: 97%

Soft dynamics of the excited state: Lambda-shaped optical spectra

Hizhnyakov

Boltrushko

Tehver

2007

Journal of Luminescence

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Phase relaxation in the vicinity of the dynamic instability: anomalous temperature dependence of zero-phonon line

Cited by 14 publications

References 27 publications

Spectroscopic investigations of negatively charged tin-vacancy centres in diamond

Spectroscopic investigations of negatively charged tin-vacancy centres in diamond

Strain broadening of the 1042-nm zero phonon line of the NV− center in diamond: A promising spectroscopic tool for defect tomography

Soft dynamics of the excited state: Lambda-shaped optical spectra

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