Browsing by Author "Norambuena, A."

Now showing 1 - 9 of 9
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    Cooling phonons with phonons : acoustic reservoir engineering with silicon-vacancy centers in diamond
    (2016) Kepesidis, K.; Lemonde, M.; Norambuena, A.; Maze Ríos, Jerónimo; Rabl, P.
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    Effect of phonons on the electron spin resonance absorption spectrum
    (2020) Norambuena, A.; Jimenez, A.; Becher, C.; Maze Ríos, Jerónimo
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    Microscopic modeling of the effect of phonons on the optical properties of solid-state emitters
    (2016) Norambuena, A.; Reyes Swett, Sebastián Andrés; Mejía López, José Félix; Gali, A.; Maze Ríos, Jerónimo
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    Physically motivated analytical expression for the temperature dependence of the zero-field splitting of the nitrogen-vacancy center in diamond
    (2023) Cambria, M. C.; Thiering, G.; Norambuena, A.; Dinani, H. T.; Gardill, A.; Kemeny, I.; Lordi, V.; Gali, A.; Maze, J. R.; Kolkowitz, S.
    The temperature dependence of the zero-field splitting (ZFS) between the vertical bar m(s) = 0 > and vertical bar m(s) = +/- 1 > levels of the nitrogen-vacancy (NV) center's electronic ground-state spin triplet can be used as a robust nanoscale thermometer in a broad range of environments. However, despite numerous measurements of this dependence in different temperature ranges, to our knowledge no analytical expression has been put forward that captures the scaling of the ZFS of the NV center across all relevant temperatures. Here we present a simple, analytical, and physically motivated expression for the temperature dependence of the NV center's ZFS that matches all experimental observations, in which the ZFS shifts in proportion to the occupation numbers of two representative phonon modes. In contrast to prior models our expression does not diverge outside the regions of fitting. We show that our model quantitatively matches experimental measurements of the ZFS from 15 to 500 K in single NV centers in ultrapure bulk diamond, and we compare our model and measurements to prior models and experimental data.
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    Spin-lattice relaxation of individual solid-state spins
    (2018) Norambuena, A.; Muñoz Tavera, Enrique; Dinani, H. T.; Jarmola, A.; Maletinsky, P.; Budker, D.; Maze Ríos, Jerónimo
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    State-dependent phonon-limited spin relaxation of nitrogen-vacancy centers
    (2021) Cambria, M. C.; Gardill, A.; Li, Y.; Norambuena, A.; Maze, J. R.; Kolkowitz, S.
    Understanding the limits to the spin coherence of the nitrogen-vacancy (NV) center in diamond is vital to realizing the full potential of this quantum system. We show that relaxation on the vertical bar m(s) = -1 > <-> vertical bar m(s) = +1 > transition occurs approximately twice as fast as relaxation on the vertical bar m(s) = 0 <-> vertical bar m(s) = +/- 1 > transitions under ambient conditions in native NVs in high-purity bulk diamond. The rates we observe are independent of NV concentration over four orders of magnitude, indicating they are limited by spin-phonon interactions. We find that the maximum theoretically achievable coherence time for an NV at 295 K is limited to 6.8(2) ms. Finally, we present a theoretical analysis of our results that suggests Orbach-like relaxation from quasilocalized phonons or contributions due to higher-order terms in the spin-phonon Hamiltonian are the dominant mechanism behind vertical bar m(s) = -1 > <-> vertical bar m(s) = +1 > relaxation, motivating future measurements of the temperature dependence of this relaxation rate.
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    Temperature-Dependent Spin-Lattice Relaxation of the Nitrogen-Vacancy Spin Triplet in Diamond
    (2023) Cambria, M. C.; Norambuena, A.; Dinani, H. T.; Thiering, G.; Gardill, A.; Kemeny, I.; Li, Y.; Lordi, V.; Gali, A.; Maze, J. R.; Kolkowitz, S.
    Spin-lattice relaxation within the nitrogen-vacancy (NV) center's electronic ground-state spin triplet limits its coherence times, and thereby impacts its performance in quantum applications. We report measurements of the relaxation rates on the NV center's jms 1/4 0i & DIVIDE;-> jms 1/4 ⠂1i and jms 1/4 -1i & DIVIDE;-> jms 1/4 thorn 1i transitions as a function of temperature from 9 to 474 K in high-purity samples. We show that the temperature dependencies of the rates are reproduced by an ab initio theory of Raman scattering due to second-order spin-phonon interactions, and we discuss the applicability of the theory to other spin systems. Using a novel analytical model based on these results, we suggest that the high-temperature behavior of NV spin-lattice relaxation is dominated by interactions with two groups of quasilocalized phonons centered at 68.2(17) and 167(12) meV.
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    UTP Controls Cell Surface Distribution and Vasomotor Activity of the Human P2Y(2) Receptor through an Epidermal Growth Factor Receptor-transregulated Mechanism
    (2010) Norambuena, A.; Pardo Huguet, Evelyn Cristina; González de la Rosa, Alfonso; García-Huidobro Toro, Juan Pablo