Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized V<sub>B</sub><sup>–</sup> Spin States in hBN

Murzakhanov, Fadis F.; Mamin, G. V.; Orlinskiĭ, S. B.; Gerstmann, Uwe; Schmidt, Wolf Gero; Biktagirov, Timur; Aharonovich, Igor; Gottscholl, Andreas; Sperlich, Andreas; Dyakonov, Vladimir; Soltamov, V. A.

doi:10.1021/acs.nanolett.1c04610

Cited by 34 publications

(34 citation statements)

References 59 publications

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“…We conclude that the majority of the electron spin coherence is lost in the first 100 ns, and hypothesize that a small fraction of the coherence may remain on a longer time-scale. At few Tesla magnetic fields, T echo = 15 µs, similar to the T 1 time, has been reported (30). However, for practical purposes the use of superconducting magnets renders the room temperature aspect of the system academic.…”

Section: Unprotected Spinmentioning

confidence: 83%

Room temperature coherent control of protected qubit in hexagonal boron nitride

Ramsay¹,

Hekmati²,

Patrickson³

et al. 2022

Preprint

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Spin defects in foils of hexagonal boron nitride are an attractive platform for magnetic field imaging, since the probe can be placed in close proximity to the target. However, as a III-V material the electron spin coherence is limited by the nuclear spin environment, with spin echo coherence time of ∼ 100 ns at room temperature accessible magnetic fields. We use a strong continuous microwave drive with a modulation in order to stabilize a Rabi oscillation, extending the coherence time up to ∼ 4 µs, which is close to the 10-µs electron spin lifetime in our sample. We then define a protected qubit basis, and show full control of the protected qubit. The coherence times of a superposition of the protected qubit can be as high as 0.8 µs. This work establishes that boron vacancies in hexagonal boron nitride can have electron spin coherence times that are competitive with typical NV-centers in small nanodiamonds under ambient conditions.

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Section: Unprotected Spinmentioning

confidence: 83%

Room temperature coherent control of protected qubit in hexagonal boron nitride

Ramsay¹,

Hekmati²,

Patrickson³

et al. 2022

Preprint

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“…Haykal et al [174] relied on isotopically enriched h 10 BN and h 11 BN crystals to investigate the isotope-dependent properties of V − B defects, and the spin coherence time T 2 linearly increases with the 10 B abundance. In addition, Gottscholl et al [89] demonstrated that the hole-burning technique can extend the coherence time of V − B to T HB 1 ≈ 25.0 μs and T HB 2 ≈ 7.5 μs by suppressing the inhomogeneous broadening due to the surrounding nuclear spin bath [216]. In the latest study, Murzakhanov et al [216] demonstrated the coherent coupling with three neighboring nitrogen atoms due to nuclear quadrupole interaction, and Hahn-echo coherence of the V − B electron spin with a characteristic decay time of 15 μs.…”

Section: Coherent Controlmentioning

confidence: 99%

Spin-active defects in hexagonal boron nitride

Liu¹,

Guo²,

Yu³

et al. 2022

Mater. Quantum. Technol.

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Quantum technology grown out of quantum information theory, including quantum communication, quantum computation and quantum sensing, not only provides powerful research tools for numerous fields, but also is expected to go to civilian use in the future. Solid-state spin-active defects are one of promising platforms for quantum technology, and the host materials include three-dimensional diamond and silicon carbide, and the emerging two-dimensional hexagonal boron nitride (hBN) and transition-metal dichalcogenides. In this review, we will focus on the spin defects in hBN, and summarize theoretical and experimental progresses made in understanding properties of these spin defects. In particular, the combination of theoretical prediction and experimental verification is highlighted. We also discuss the future advantages and challenges of solid-state spins in hBN on the path towards quantum information applications.

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“…In other crystals, single defect ODMR signals have recently been reported in silicon carbide 6,62,63 or hexagonal boron nitride 64,65 . Notably, the so called V1 center in silicon carbide 62 involves a spin quartet S = 3 2 ground state.…”

Section: Main Odmr Systems and Their Applicationsmentioning

confidence: 99%

Optically detected magnetic resonance with an open source platform

Babashah¹,

Shirzad²,

Losero³

et al. 2022

Preprint

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Localized electronic spins in solid-state environments form versatile and robust platforms for quantum sensing, metrology and quantum information processing. With optically detected magnetic resonance (ODMR), it is possible to prepare and readout highly coherent spin systems, up to room temperature, with orders of magnitude enhanced sensitivities and spatial resolutions compared to induction-based techniques, allowing single spin manipulations. While ODMR was first observed in organic molecules, many other systems are nowadays intensively being searched for, discovered and studied. Among them is the nitrogen-vacany (NV) center in diamond. Beyond ODMR it is notably already widely and successfully used both as a high-resolution high-sensitivity quantum sensors for external fields and as a qubit. Others are rare earth ions used as quantum memories and many other color centers trapped in bulk or 2-dimensional materials. In order to allow the broadest possible community of researchers and engineers to investigate and develop novel ODMR-based materials and applications, we overview here the setting up of ODMR experiments using commercially available hardware. We also present in detail a dedicated collaborative open-source interface named Qudi and describe the original features we have added to speed-up data acquisition, relax instrumental requirements and widen its applicability to individual and ensemble ODMR systems. Associating hardware and software discussions, this article aims to steepen the learning curve of newcomers in ODMR from a variety of scientific backgrounds, to optimize the experimental development time, preempt the common measurement pitfalls, and to provide an efficient, portable and collaborative interface to explore innovative experiments.

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Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized V_B^– Spin States in hBN

Cited by 34 publications

References 59 publications

Room temperature coherent control of protected qubit in hexagonal boron nitride

Room temperature coherent control of protected qubit in hexagonal boron nitride

Spin-active defects in hexagonal boron nitride

Optically detected magnetic resonance with an open source platform

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Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized VB– Spin States in hBN

Cited by 34 publications

References 59 publications

Room temperature coherent control of protected qubit in hexagonal boron nitride

Room temperature coherent control of protected qubit in hexagonal boron nitride

Spin-active defects in hexagonal boron nitride

Optically detected magnetic resonance with an open source platform

Contact Info

Product

Resources

About

Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized V_B^– Spin States in hBN