A compact, diode laser based excitation system for microscopy of NV centers

Oeckinghaus, Thomas; Stöhr, Rainer; Kolesov, Roman; Tisler, Julia; Reinhard, Friedemann; Wrachtrup, Jörg

doi:10.1063/1.4885469

Cited by 12 publications

(6 citation statements)

References 26 publications

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“…A directly driven laser-diode (PicoLas, Roithner) emitting at a wavelength of 520 nm was used for lifetime measurements [41]. This was the longest wavelength laser diode commercially available to us below 600 nm.…”

Section: Lifetime Measurementsmentioning

confidence: 99%

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Efficient Extraction of Zero-Phonon-Line Photons from Single Nitrogen-Vacancy Centers in an Integrated GaP-on-Diamond Platform

et al. 2016

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Scaling beyond two-node quantum networks using nitrogen vacancy (NV) centers in diamond is limited by the low probability of collecting zero phonon line (ZPL) photons from single centers. Here, we demonstrate GaP-on-diamond disk resonators which resonantly couple ZPL photons from single NV centers to single-mode waveguides. In these devices, the probability of a single NV center emitting a ZPL photon into the guided waveguide mode after optical excitation can reach 9%, due to a combination of resonant enhancement of the ZPL emission and efficient coupling between the resonator and waveguide. We verify the single-photon nature of the emission and experimentally demonstrate both high in-waveguide photon numbers and substantial Purcell enhancement for a set of devices. These devices may enable scalable integrated quantum networks based on NV centers.

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Section: Lifetime Measurementsmentioning

confidence: 99%

“…In order to quantify the achieved Purcell enhancement, the excited-state lifetimes of individual NV centers were measured using a directly modulated laser diode [31] with a measured fall time of 1 ns. Time-resolved measurements were taken on Disks 1-4, with the cavity onresonance with a selected ZPL, as well as off-resonance.…”

mentioning

confidence: 99%

Efficient Extraction of Zero-Phonon-Line Photons from Single Nitrogen-Vacancy Centers in an Integrated GaP-on-Diamond Platform

et al. 2016

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“…At the initial stages of the experiment, it was a continuous-wave laser with no power stabilization of 80 mW at  = 532 nm. Subsequently, a semiconductor 50 mW green laser at  = 515 nm was used with a PicoLAS LDP-V 03-100 pulse driver [7], controlled from an external programmable source of rectangular pulses. The optimal intensity of optical pumping was selected by enumerating neutral light filters.…”

Section: Methodsmentioning

confidence: 99%

ODMR spectroscopy of NV(–) color centers in synthetic diamonds

Antonov,

Kartashov,

Podlesnyi

et al. 2023

XVI International Conference on Pulsed Lasers and Laser Applications

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“…FDTD simulations of 60 periods of the optimized structure give greater than 40 dB attenuation for elliptically polarized light at the excitation wavelength with a FWHM of ∼30 nm, and over 95% ZPL transmission. As we report in the text, the first fabricated iteration of these structures results provide greater than 14 dB of attenuation at 515-nm excitation, a common direct-band-gap laser wavelength, which can be used to efficiently excite the NV [44,45].…”

Section: Appendix E: Waveguide Spectramentioning

confidence: 97%

Scalable Integration of Long-Lived Quantum Memories into a Photonic Circuit

et al. 2015

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We demonstrate a photonic circuit with integrated long-lived quantum memories. Precharacterized quantum nodes-diamond microwaveguides containing single, stable, negatively charged nitrogenvacancy centers-are deterministically integrated into low-loss silicon nitride waveguides. These quantum nodes efficiently couple into the single-mode waveguides with >1 Mcps collected into the waveguide, have narrow single-scan linewidths below 400 MHz, and exhibit long electron spin coherence times up to 120 μs. Our system facilitates the assembly of multiple quantum nodes with preselected properties into a photonic integrated circuit with near unity yield, paving the way towards the scalable fabrication of quantum information processors. DOI: 10.1103/PhysRevX.5.031009 Subject Areas: Photonics, Quantum InformationAdvanced quantum information systems, such as quantum computers [1] and quantum repeaters [2], require multiple entangled quantum memories that can be individually controlled [3]. Over the past decade, there has been rapid theoretical and experimental progress in developing such entangled networks using stationary quantum bits (qubits) connected via photons [4][5][6]. Photonic integrated circuits (PICs) could provide a compact, phase-stable, and scalable architecture for such quantum networks. However, the realization of this promise requires near-unity-yield fabrication of high-quality solid-state quantum memories efficiently coupled to low-loss single-mode waveguides.A promising solid-state quantum memory with secondscale spin coherence times is the negatively charged nitrogen-vacancy (NV) center in diamond [7,8]. Its electronic spin state can be optically initialized, manipulated, measured [9,10], and mapped onto nearby auxiliary nuclear memories [11], which allows for quantum error correction [12]. Quantum network protocols based on these unique qualities have been proposed [13,14], and entanglement generation and state teleportation between two spatially separated quantum memories have been demonstrated [15,16]. Translating such entanglement techniques into an on-chip architecture promises scalability, but can only succeed if an efficient photonic architecture can be fabricated with a high yield. So far, waveguide patterning in diamond is challenging, preventing low-loss waveguides in the optical domain around 637 nm, the zero phonon line (ZPL) of the NV. This is in contrast to silicon nitride (SiN)-based photonics, which relies on well-developed fabrication processes [17], is CMOS compatible [18], and has a large band gap (∼5 eV) and high index of refraction (n ¼ 2.1), which makes it ideal for routing the visible emission of NVs.A second challenge in creating a scalable solid-state quantum network architecture is the inherently low yield production of high-quality quantum nodes due to the stochastic process of NV creation. The number of fabrication attempts necessary to create a monolithic network in which all nodes contain NV quantum memories with the desired spectral and spin properties scales exponentially...

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A compact, diode laser based excitation system for microscopy of NV centers

Cited by 12 publications

References 26 publications

Efficient Extraction of Zero-Phonon-Line Photons from Single Nitrogen-Vacancy Centers in an Integrated GaP-on-Diamond Platform

Efficient Extraction of Zero-Phonon-Line Photons from Single Nitrogen-Vacancy Centers in an Integrated GaP-on-Diamond Platform

ODMR spectroscopy of NV(–) color centers in synthetic diamonds

Scalable Integration of Long-Lived Quantum Memories into a Photonic Circuit

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