Integrated transition edge sensors on titanium in-diffused lithium niobate waveguides

Höpker, Jan Philipp; Gerrits, Thomas; Lita, Adriana E.; Krapick, Stephan; Herrmann, Harald; Ricken, Raimund; Quiring, Viktor; Mirin, Richard P.; Nam, Sae Woo; Silberhorn, Christine; Bartley, Tim J.

doi:10.1063/1.5086276

Cited by 47 publications

(29 citation statements)

References 47 publications

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“…On bulk LN substrate, SNSPDs based on polycrystalline NbN have been studied since 2012 [416,417]. On Ti in-diffused LN waveguides, integrated SNSPDs based on amorphous WSi as well as W TESs have both been demonstrated [418,419].…”

Section: Detectorsmentioning

confidence: 99%

Integrated photonics on thin-film lithium niobate

et al. 2021

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Lithium niobate (LN), an outstanding and versatile material, has influenced our daily life for decades: from enabling high-speed optical communications that form the backbone of the Internet to realizing radio-frequency filtering used in our cell phones. This half-century-old material is currently embracing a revolution in thin-film LN integrated photonics. The success of manufacturing wafer-scale, high-quality, thin films of LN on insulator (LNOI), accompanied with breakthroughs in nanofabrication techniques, have made high-performance integrated nanophotonic components possible. With rapid development in the past few years, some of these thin-film LN devices, such as optical modulators and nonlinear wavelength converters, have already outperformed their legacy counterparts realized in bulk LN crystals. Furthermore, the nanophotonic integration enabled ultra-low-loss resonators in LN, which unlocked many novel applications such as optical frequency combs and quantum transducers. In this Review, we cover-from basic principles to the state of the art-the diverse aspects of integrated thinfilm LN photonics, including the materials, basic passive components, and various active devices based on electro-optics, all-optical nonlinearities, and acousto-optics. We also identify challenges that this platform is currently facing and point out future opportunities. The field of integrated LNOI photonics is advancing rapidly and poised to make critical impacts on a broad range of applications in communication, signal processing, and quantum information.

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Section: Detectorsmentioning

confidence: 99%

Integrated photonics on thin-film lithium niobate

et al. 2021

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“…For number‐resolving capability, transition‐edge sensors can be used, which have already been implemented on the conventional titanium in‐diffused LN waveguides. [ 218 ] However, such detectors have a very long response time, in the range of few microseconds, which makes them unsuitable for such fast multiplexing applications. For achieving a fast photon‐number‐resolving response, multiple threshold SNSPDs can be multiplexed together.…”

Section: Implementation Of a Complex Quantum Chip On The Lnoi Platformmentioning

confidence: 99%

Lithium Niobate on Insulator: An Emerging Platform for Integrated Quantum Photonics

Saravi

Pertsch

Setzpfandt

2021

Advanced Optical Materials

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“…There exists many implementations of waveguides in lithium niobate [8][9][10], of which titanium in-diffusion is an excellent candidate for cryogenic-compatible quantum protocols. It offers both low-loss propagation [7] and highly efficient coupling to single-mode fibers in the telecom band [11], as well as being compatible with superconducting detectors [12,13]. Furthermore, when combined with periodic poling, such waveguides provide the modal confinement necessary for high-efficiency nonlinear interactions.…”

Section: Introductionmentioning

confidence: 99%

Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides

Bartnick,

Santandrea,

Hoepker

et al. 2020

Preprint

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Prospective integrated quantum optical technologies will combine nonlinear optics and components requiring cryogenic operating temperatures. Despite the prevalence of integrated platforms exploiting χ (2) -nonlinearities for quantum optics, for example used for quantum state generation and frequency conversion, their material properties at low temperatures are largely unstudied. Here, we demonstrate the first second harmonic generation in a fiber-coupled lithium niobate waveguide at temperatures down to 4.4 K. We observe a reproducible shift in the phase-matched pump wavelength within the telecom band, in addition to transient discontinuities while temperature cycling. Our results establish lithium niobate as a versatile nonlinear photonic integration platform compatible with cryogenic quantum technologies.

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Integrated transition edge sensors on titanium in-diffused lithium niobate waveguides

Cited by 47 publications

References 47 publications

Integrated photonics on thin-film lithium niobate

Integrated photonics on thin-film lithium niobate

Lithium Niobate on Insulator: An Emerging Platform for Integrated Quantum Photonics

Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides

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