Diamond-based microwave quantum amplifier

Sherman, Alexander; Zgadzai, O. E.; Koren, Boaz; Peretz, Idan; Laster, Eyal; Blank, Aharon

doi:10.1126/sciadv.ade6527

Cited by 20 publications

(20 citation statements)

References 29 publications

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“…It is notable that despite a relatively poor steady state spin polarisation, dilute spin concentration (≤ 10 -4 %) and hyperfine splitting, negatively charge nitrogen vacancy (NV -) diamond can mase due to its narrow transition linewidth (1.7 MHz). [53,81]…”

Section: Discussionmentioning

confidence: 99%

N-heteroacenes as an organic gain medium for room temperature masers

Attwood

Newns

et al. 2023

Preprint

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The development of future quantum devices such as the maser, i.e., the microwave analog the laser, could be well-served by exploration of chemically tuneable organic materials. Current iterations of room temperature organic solid-state masers are composed of an inert host material that is doped with a spin-active molecule. In this work, we have systematically modulated the structure of three nitrogen-substituted tetracene derivatives to augment their photoexcited spin dynamics and then evaluated their potential as novel maser gain media. To facilitate these investigations, we adopted an organic glass former, 1,3,5-tri(1-naphthyl)benzene (1-TNB) to act a universal host. These chemical modifications impacted the rates of intersystem crossing, triplet spin polarisation, triplet decay and spin-lattice relaxation, leading to significant consequences on the conditions required to surpass the maser threshold.

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Section: Discussionmentioning

confidence: 99%

N-heteroacenes as an organic gain medium for room temperature masers

Attwood

Newns

et al. 2023

Preprint

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“…This must also be matched by a relatively narrow microwave emission band, which as this study has demonstrated can be fatal even for pulsed masers. It is notable that despite a relatively poor steady-state spin polarization, dilute spin concentration (≤10 –4 %), and hyperfine splitting, negatively charged nitrogen-vacancy (NV – ) diamond can mase due to its narrow transition linewidth (1.7 MHz). , …”

Section: Discussionmentioning

confidence: 99%

N-Heteroacenes as an Organic Gain Medium for Room-Temperature Masers

Attwood

Newns

et al. 2023

Chem. Mater.

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The development of future quantum devices such as the maser, i.e., the microwave analog of the laser, could be well-served by the exploration of chemically tunable organic materials. Current iterations of room-temperature organic solid-state masers are composed of an inert host material that is doped with a spin-active molecule. In this work, we systematically modulated the structure of three nitrogen-substituted tetracene derivatives to augment their photoexcited spin dynamics and then evaluated their potential as novel maser gain media by optical, computational, and electronic paramagnetic resonance (EPR) spectroscopy. To facilitate these investigations, we adopted an organic glass former, 1,3,5-tri(1naphthyl)benzene to act as a universal host. These chemical modifications impacted the rates of intersystem crossing, triplet spin polarization, triplet decay, and spin−lattice relaxation, leading to significant consequences on the conditions required to surpass the maser threshold.

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“…NV centers have received the most attention among the nitrogen-based defects in diamonds due to the combination of their long spin coherence times at room temperature and their optical properties, which enable optical polarization and optical readout of the spin state . This unique set of properties makes the NV center a promising platform for a variety of novel technologies, such as quantum computing, − subpicotesla magnetometry, − and microwave amplification . For some of these applications, a high concentration of NV centers is beneficial, which has led to the development of methods enriching diamonds with NV centers, to the point where some are commercially available (For example, by Thorlabs) .…”

Section: Introductionmentioning

confidence: 99%

“…This sample will be termed diamond A in the rest of the text. The DNP sweep shows the bulk 13 C nuclear magnetic resonance (NMR) signal intensity after a few minutes of irradiation at a designated frequency (the pulse sequence is shown in Figure 1c). The overall DNP line shape is similar in both fields, with characteristic positive and negative lobes.…”

Section: ■ Introductionmentioning

confidence: 99%

“…= paramagnetic centers with long coherence times at room temperature, 17 and have been studied by EPR spectroscopy for decades. 18−20 They can serve as a very efficient source of 13 C hyperpolarization in dynamic nuclear polarization (DNP) experiments. Recently, a detailed analysis of DNP mechanisms in a powder of HPHT microdiamonds was carried out by decomposing the DNP spectra acquired at 3.3 T. 21,22 One of the most intriguing outcomes of this analysis was the significant DNP enhancement on-resonance with the P1 EPR transitions.…”

Section: ■ Introductionmentioning

confidence: 99%

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Nitrogen Substitutions Aggregation and Clustering in Diamonds as Revealed by High-Field Electron Paramagnetic Resonance

Nir-Arad,

Shlomi,

Manukovsky

et al. 2023

J. Am. Chem. Soc.

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Diamonds have been shown to be an excellent platform for quantum computing and quantum sensing applications. These applications are enabled by the presence of defects in the lattice, which are also known as color centers. The most common nitrogen-based defect in synthetic diamonds is the paramagnetic nitrogen substitution (P1) center. While the majority of quantum applications rely on nitrogen-vacancy (NV) centers, the properties of the latter are heavily influenced by the presence and the spatial distribution of the P1 centers. Hence, understanding the spatial distribution and mutual interactions of P1 centers is crucial for the successful development of diamond-based quantum devices. Unlike NV centers, P1 centers do not have a spin-dependent optical signature, and their spin-related properties, therefore, have to be detected and characterized using magnetic resonance methods. We show that using high-field (6.9 and 13.8 T) pulsed electron paramagnetic resonance (EPR) and dynamic nuclear polarization (DNP) experiments, we can distinguish and quantify three distinct populations of P1 centers: isolated P1 centers, weakly interacting ones, and exchange-coupled ones that are clustered together. While such clustering was suggested before, these clusters were never detected directly and unambiguously. Moreover, by using electron−electron double resonance (ELDOR) pump−probe experiments, we demonstrate that the latter clustered population does not exist in isolation but coexists with the more weakly interacting P1 centers throughout the diamond lattice. Its presence thus strongly affects the quantum properties of the diamond. We also show that the existence of this population can explain recent hyperpolarization results in type Ib high-pressure, high-temperature (HPHT) diamonds. We propose a combination of high-field pulsed EPR, ELDOR, and DNP as a tool for probing the aggregation state and interactions among different populations of nitrogen substitution centers.

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Diamond-based microwave quantum amplifier

Cited by 20 publications

References 29 publications

N-heteroacenes as an organic gain medium for room temperature masers

N-heteroacenes as an organic gain medium for room temperature masers

N-Heteroacenes as an Organic Gain Medium for Room-Temperature Masers

Nitrogen Substitutions Aggregation and Clustering in Diamonds as Revealed by High-Field Electron Paramagnetic Resonance

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