Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Microoptics Conference

Integrated Photonic Quantum Sources and Circuits in Lithium Niobate Platform

Tien-Dat Pham, Yixin Lin, Cheng-Chung Chiu, Hung-Pin Chung, Aloysius Niko, Pin-Ju Tsai, Mohammadreza Younesi, Reinhard Geiß, Frank Setzpfandt, Thomas Pertsch, Yen-Hung Chen

Published Sep 24, 2023• 0 citations
Publisher

Abstract

We report the study of various passive and active optical elements as building blocks for realizing novel quantum photonic sources and circuits including a highly integrated on-chip Bell state generator and a broadband tunable electro-optic switch, all based on bulk or thin-film lithium niobate waveguide platforms.
DOI
10.23919/moc58607.2023.10302746

Related papers

Integrated Photonic Sources and Circuits in Lithium Niobate Platform

Yixin Lin, Chieh-Hsun Lee, Hung-Pin Chung +11 more

Lithium niobate (LN) is a promising and versatile material platform for implementing various elements essential for realizing integrated photonic technology. We report on integrated entangled photon-pair sources and adiabatic coupler circuits built in bulk/thin-film LN.

Opto-Electronics and Communications Conference (OECC)•Jan 1, 2021•1 citation

Integrated Lithium Niobate Photonics for Quantum Technology

Cheng-Chung Chiu, Po-Hsiang Huang, Sheng-Hung Wang +5 more

Quantum photonics has advanced rapidly and become a leading approach for developing a broad range of quantum technologies, including quantum communications, quantum information processing, quantum computing, and quantum sensing. Besides, the emerging photonic integrated circuits (PIC) technology has been widely used to implement versatile optical elements advantageous for different quantum applications. For example, PIC-based devices have functioned as building blocks, such as photonic qubit sources, linear optical circuits, modulators, and even single-photon detectors, for realizing highly integrated, large-scale quantum computing schemes. In such a powerful quantum photonic integrated circuits (QPIC) scheme, the creation, manipulation, and testing of quantum entanglement states from the generated qubits via a reconfigurable photonic circuitry are essential. Though the state-of-the-art PIC technology is established based on Si photonics due to its widely mature nanophotonic circuit (waveguide) fabrication technology supported by the existing immense semiconductor industry, Si-based PIC has limitations in implementing efficient and fast active elements that usually demand a quadratic nonlinearity. Lithium niobate (LN), renowned as “the silicon of photonics”, has long been a popular material widely used in integrated-optical and nonlinear-optical applications. A great variety of passive and active photonic elements have been realized in the LN platform. Recently, a novel material based on high-quality single-crystalline films of LN, known as thin-film LN on insulator (LNOI), has been developed and has soon drawn enormous attention for its greatly promising ability to realize nanoscale PIC/QPIC in this iconic optical material platform. In this presentation, we report our recent studies on several key LN PIC building blocks for developing novel quantum photonic sources and circuits, including highly integrated photonic-circuit periodically poled lithium niobate (PPLN) chips for photon-pair generation and manipulation, for high-dimensional frequency-entangled qudit production, for time-frequency grid-state generation, for continuous-variable squeezed vacuum state generation, and their potential applications to quantum computing/communication/sensing technology. Besides, a PP-LNOI electro-optic (EO) polarization mode converter (PMC) useful for demonstrating fast control of quantum polarization states and other LNOI circuit elements as QPIC building blocks will also be presented.

JSAP-OSA Joint Symposia•Jan 1, 2025•0 citations

Integrated lithium niobate photonic devices for photonic quantum information science

Changhyun Kim, Hansol Kim, Sunghyun Moon +2 more

Integrated thin-film lithium niobate (TFLN) photonics has emerged as a powerful platform for quantum information science, offering its outstanding nonlinear, electro-optic (EO), and integration capabilities. In this review, we present the latest advances in TFLN-based integrated photonics tailored to quantum technologies. We first explore state-of-the-art quantum light sources realized in both straight waveguide and resonator configuration, including high-brightness photon pair generations, squeezed light, and versatile entanglement schemes. Next, we detail progress in integrated photonic processors, with a focus on programmable interferometric networks, ultrafast EO modulators, and essential passive components for photonic qubit processing. We then address critical challenges in optical interfacing and detection technologies, discussing recent innovations in low-loss fiber-to-chip and grating coupler designs, as well as the integration of on-chip single photon detectors. This review provides a forward-looking perspective on scalable quantum photonic systems that could underpin future advances in quantum communication, computing, and sensing.

Nano Convergence•Dec 31, 2025•4 citations

Squeezed light generation and analysis using a sub-threshold optical parametric oscillator on integrated thin-film lithium niobate photonic circuit

Tae‐Won Park, Hubert S. Stokowski, Timothy P. McKenna +7 more

We present our recent effort towards building an integrated photonic circuitry on thin-film lithium niobate platform for squeezed state of light generation from an optical parametric oscillator.

•Jan 1, 2023•0 citations

An Integrated Photonic Platform for Rare-Earth Ions in Thin Film Lithium Niobate

Subhojit Dutta, Elizabeth A. Goldschmidt, Sabyasachi Barik +2 more

We demonstrate an integrated photonic platform for rare earth ions in thin film lithium niobate. The ions in the thin film retain bulk like optical properties. This paves way for a new generation of highly scalable, active optoelectronic devices with applications to both classical and quantum optics.

Conference on Lasers and Electro-Optics•Jan 1, 2020•0 citations

An Integrated Photonic Circuit on Thin-Film Lithium Niobate for Time-Bin Quantum Information Processing

Giovanni Finco, Giovanni Vio, Filippo Miserocchi +5 more

Lithium niobate-on-insulator (LNOI) is a leading platform for high-speed optical communication technologies owing to its large electro-optic bandwidth, which enables light modulation above 100 GHz [1]. The wide transparency window is being leveraged to produce photonic integrated circuits operating at different wavelengths, and the strong second-order nonlinearity allows efficient frequency conversion via periodic poling of the crystal on the same waveguide network [2]. LNOI has potential to revolutionise optical communication, and nonlinear conversion processes can be used to generate highly pure quantum states acting as bits of information for the next generation of optical quantum information technologies.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•Jun 23, 2025•0 citations
Quantum photonics has advanced rapidly and become a leading approach for developing a broad range of quantum technologies, including quantum communications, quantum information processing, quantum computing, and quantum sensing. Besides, the emerging photonic integrated circuits (PIC) technology has been widely used to implement versatile optical elements advantageous for different quantum applications. For example, PIC-based devices have functioned as building blocks, such as photonic qubit sources, linear optical circuits, modulators, and even single-photon detectors, for realizing highly integrated, large-scale quantum computing schemes. In such a powerful quantum photonic integrated circuits (QPIC) scheme, the creation, manipulation, and testing of quantum entanglement states from the generated qubits via a reconfigurable photonic circuitry are essential. Though the state-of-the-art PIC technology is established based on Si photonics due to its widely mature nanophotonic circuit (waveguide) fabrication technology supported by the existing immense semiconductor industry, Si-based PIC has limitations in implementing efficient and fast active elements that usually demand a quadratic nonlinearity. Lithium niobate (LN), renowned as “the silicon of photonics”, has long been a popular material widely used in integrated-optical and nonlinear-optical applications. A great variety of passive and active photonic elements have been realized in the LN platform. Recently, a novel material based on high-quality single-crystalline films of LN, known as thin-film LN on insulator (LNOI), has been developed and has soon drawn enormous attention for its greatly promising ability to realize nanoscale PIC/QPIC in this iconic optical material platform. In this presentation, we report our recent studies on several key LN PIC building blocks for developing novel quantum photonic sources and circuits, including highly integrated photonic-circuit periodically poled lithium niobate (PPLN) chips for photon-pair generation and manipulation, for high-dimensional frequency-entangled qudit production, for time-frequency grid-state generation, for continuous-variable squeezed vacuum state generation, and their potential applications to quantum computing/communication/sensing technology. Besides, a PP-LNOI electro-optic (EO) polarization mode converter (PMC) useful for demonstrating fast control of quantum polarization states and other LNOI circuit elements as QPIC building blocks will also be presented.
Integrated thin-film lithium niobate (TFLN) photonics has emerged as a powerful platform for quantum information science, offering its outstanding nonlinear, electro-optic (EO), and integration capabilities. In this review, we present the latest advances in TFLN-based integrated photonics tailored to quantum technologies. We first explore state-of-the-art quantum light sources realized in both straight waveguide and resonator configuration, including high-brightness photon pair generations, squeezed light, and versatile entanglement schemes. Next, we detail progress in integrated photonic processors, with a focus on programmable interferometric networks, ultrafast EO modulators, and essential passive components for photonic qubit processing. We then address critical challenges in optical interfacing and detection technologies, discussing recent innovations in low-loss fiber-to-chip and grating coupler designs, as well as the integration of on-chip single photon detectors. This review provides a forward-looking perspective on scalable quantum photonic systems that could underpin future advances in quantum communication, computing, and sensing.
Lithium niobate-on-insulator (LNOI) is a leading platform for high-speed optical communication technologies owing to its large electro-optic bandwidth, which enables light modulation above 100 GHz [1]. The wide transparency window is being leveraged to produce photonic integrated circuits operating at different wavelengths, and the strong second-order nonlinearity allows efficient frequency conversion via periodic poling of the crystal on the same waveguide network [2]. LNOI has potential to revolutionise optical communication, and nonlinear conversion processes can be used to generate highly pure quantum states acting as bits of information for the next generation of optical quantum information technologies.