Spatio-temporal isolator in lithium niobate on insulator

Huang, Haijin; Balčytis, Armandas; Dubey, Aditya; Boes, Andreas; Nguyen, Thach G.; Ren, Guanghui; Tan, Mengxi; Mitchell, Arnan

doi:10.29026/oes.2023.220022

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…This integrated realization represents a three order of magnitude decrease in optical path length compared to typical 13.5 m optical ber loop setups [14], albeit at the cost of a corresponding increase in the relevant process rates from megahertz to gigahertz scale. Sub-1 dBcm − 1 propagation loss waveguides are fabricated by using a strip-loading approach, in which mode con nement is established by a 1 µm wide ridge patterned in a 300 nm thick silicon nitride lm covering the likewise 300 nm thickness LiNbO 3 layer [24,25], resulting in a stack sketched in Fig. 1b.…”

Section: Resultsmentioning

confidence: 99%

Reconfigurable synthetic dimension frequency lattices in an integrated lithium niobate ring cavity

Balcytis,

Dinh,

Ozawa

et al. 2024

Preprint

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Harnessing non-spatial properties of photons as if they represent an additional independent coordinate underpins the emerging synthetic dimension approach. It enables probing of higher-dimensional physical models within low-dimensional devices, such as on a planar chip. We demonstrate an integrated thin-film lithium niobate ring resonator that, under dynamic modulation, simulates a tight-binding model with its discrete frequency modes representing lattice sites. Inter-mode coupling, and the simulated lattice geometry, can be reconfigured by controlling the modulating signals. Up to a quasi-3D lattice connectivity with controllable gauge potentials has been achieved by simultaneous synchronized nearest-, second- and third-nearest-neighbor coupling, and verified by acquiring time-resolved synthetic band structures. Development of synthetic frequency dimension devices in the thin-film lithium niobate photonic integration platform is a key step in increasing the complexity of topological models achievable on a chip, combining efficient electro-optic mode coupling response with non-linear effects for long-range mode interactions.

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Section: Resultsmentioning

confidence: 99%

Reconfigurable synthetic dimension frequency lattices in an integrated lithium niobate ring cavity

Balcytis,

Dinh,

Ozawa

et al. 2024

Preprint

Self Cite

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“…In non-Majorana devices, it has been experimentally demonstrated that Cooper pairs can be split into spin-entangled electrons flowing in two spatially separated normal metals, resulting in a positive current-current correlation. [26][27][28][29][30][31] Although there are many theoretical studies devoted to investigate the property of noise CC induced by MBSs, [32][33][34][35][36][37][38][39] the Majoranamodulated nonlocal transport has not been reported up to date. One of the possible reasons is that the Majorana energy splitting, which is essential to induce the noise CC, is generally weak and approaches to zero in some cases.…”

Section: Introductionmentioning

confidence: 99%

Coulomb-assisted nonlocal electron transport between two pairs of Majorana bound states in a superconducting island

Wang 王,

Ren 任,

Lü 吕

et al. 2024

Chinese Phys. B

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We investigate the nonlocal transport modulated by Coulomb interactions in devices comprising two interacting Majorana wires, where both nanowires are in proximity to a mesoscopic superconducting island. Each Majorana bound state is coupled to one lead via a quantum dot with resonant levels. In this device, the nonlocal correlations can be induced in the absence of Majorana energy splitting. We find that the negative differential conductance and giant current noise cross correlation could be induced, due to the interplay between nonlocality of MBSs and dynamical Coulomb blockade effect. This feature may provide a signature for the existence of the MBSs.

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χ(2) nonlinear photonics in integrated microresonators

Liu

Wen

Ren

et al. 2023

Front. Optoelectron.

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Second-order (χ(2)) optical nonlinearity is one of the most common mechanisms for modulating and generating coherent light in photonic devices. Due to strong photon confinement and long photon lifetime, integrated microresonators have emerged as an ideal platform for investigation of nonlinear optical effects. However, existing silicon-based materials lack a χ(2) response due to their centrosymmetric structures. A variety of novel material platforms possessing χ(2) nonlinearity have been developed over the past two decades. This review comprehensively summarizes the progress of second-order nonlinear optical effects in integrated microresonators. First, the basic principles of χ(2) nonlinear effects are introduced. Afterward, we highlight the commonly used χ(2) nonlinear optical materials, including their material properties and respective functional devices. We also discuss the prospects and challenges of utilizing χ(2) nonlinearity in the field of integrated microcavity photonics. Graphical Abstract

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Spatio-temporal isolator in lithium niobate on insulator

Cited by 9 publications

References 25 publications

Reconfigurable synthetic dimension frequency lattices in an integrated lithium niobate ring cavity

Reconfigurable synthetic dimension frequency lattices in an integrated lithium niobate ring cavity

Coulomb-assisted nonlocal electron transport between two pairs of Majorana bound states in a superconducting island

χ(2) nonlinear photonics in integrated microresonators

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