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Arslan Sajid Raja

Cette personne a quitté l’EPFL

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Publications associées (51)

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Coherent terahertz-to-microwave link using electro-optic-modulated Turing rolls

Tobias Kippenberg, Miles Henry Anderson, Arslan Sajid Raja, Wenle Weng, Jijun He, Anat Siddharth

Arising from modulation instability, Turing rolls in optical Kerr microresonators have been used in the generation of optical frequency combs and the synthesis of microwave and terahertz frequencies. In this work, by applying electro-optic modulation on te ...

AMER PHYSICAL SOC2021

Cavity-mediated electron-photon pairs

Rui Ning Wang, Tobias Kippenberg, Junqiu Liu, Arslan Sajid Raja, Guanhao Huang, Zheru Qiu, Yujia Yang

Quantum information, communication, and sensing rely on the generation and control of quantum correlations in complementary degrees of freedom. Free electrons coupled to photonics promise novel hybrid quantum technologies, although single-particle correlat ...

American Association for the Advancement of Science2022

Photon Fock State Generation in Photonic Microresonators

Tobias Kippenberg, Junqiu Liu, Arslan Sajid Raja, Guanhao Huang, Jiahe Pan, Zheru Qiu, Yujia Yang

We generate correlated pairs of free electrons and cavity photons by sending an electron beam across a photonic microresonator and filtering temporal coincidences. We further characterize the pairs analogue to a heralded single photon source. ...

Optical Society of America2023

Reconfigurable Radiofrequency Photonic Filters Based on Soliton Microcombs

Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Jianqi Hu, Arslan Sajid Raja, Jijun He

We demonstrate soliton based radiofrequency filters using a 104 GHz Si3N4 microresonator. The filter passband frequencies are widely reconfigured via inherent soliton states of perfect soliton crystals and two-soliton microcombs, without any external pulse ...

IEEE2020

Electron spectrometer calibration method

Thomas La Grange, Tobias Kippenberg, Fabrizio Carbone, Bruce Michael Raleigh Weaver, Arslan Sajid Raja, Alexey Sapozhnik, Paolo Cattaneo, Yujia Yang

The present invention concerns an energy dispersion calibration method for calibrating an electron spectrometer of an electron spectrometer system including at least one electron emission source, electron optics and the electron spectrometer. The method co ...

2023

Wafer-scale fabrication of ultralow-loss silicon nitride nonlinear photonic circuits

Rui Ning Wang, Tobias Kippenberg, Maxim Karpov, Junqiu Liu, Miles Henry Anderson, Arslan Sajid Raja, Nils Johan Engelsen, Wenle Weng, Anton Lukashchuk, Guanhao Huang, Jijun He, Mikhail Churaev, Anat Siddharth, Alexey Tikan

Recent advances in silicon nitride integrated photonics have achieved ultralow optical losses. Transferring this technology to standard commercial foundries, and merging it with silicon photonics via heterogeneous integration, will seed novel laser and qua ...

IEEE2020

Multiplexing Soliton-Combs in Optical Microresonators

Tobias Kippenberg, Erwan Guillaume Albert Lucas, Maxim Karpov, Arslan Sajid Raja, Romain Dany Bruno Bouchand

Nonlinear wave mixing in optical microresonators new perospects for compact optical frequency combs with many promising applications. We demonstrate simultaneous generation of multiple frequency combs from a single optical microresonator and a single conti ...

SPIE-INT SOC OPTICAL ENGINEERING2019

Monolithic piezoelectric control of soliton microcombs

Rui Ning Wang, Tobias Kippenberg, Erwan Guillaume Albert Lucas, Mitchell David Anderson, Junqiu Liu, Arslan Sajid Raja, Wenle Weng, Tianyi Liu, Jijun He

We demonstrate piezoelectric actuators monolithically integrated on ultralow-loss Si3N4 waveguides. Varying the voltage applied on the actuator allows microresonator tuning, and to initiate, switch, stabilize and tightly phase lock the single soliton micro ...

IEEE2020

Integrated Si3N4 Soliton Microcomb Driven by a Compact Ultra-low-noise Laser

Nicolas Volet, Rui Ning Wang, Tobias Kippenberg, Erwan Guillaume Albert Lucas, Junqiu Liu, Arslan Sajid Raja, Romain Dany Bruno Bouchand, Jijun He

We generate 100-GHz soliton microcombs in a photonic integrated high-Q Si3N4 microresonator using an ultra-compact, high-power and low-frequency-noise semiconductor-based laser. The soliton is initiated via direct current tuning of the laser. (C) 2019 The ...

IEEE2019

Dissipative Kerr solitons in photonic chip-based microresonators

Tobias Kippenberg, Martin Hubert Peter Pfeiffer, Erwan Guillaume Albert Lucas, John David Jost, Maxim Karpov, Hairun Guo, Junqiu Liu, Miles Henry Anderson, Arslan Sajid Raja, Wenle Weng, Anton Lukashchuk, Romain Dany Bruno Bouchand

Since their discovery microresonator-based frequency combs have drawn a lot of interest due to their compact form factor and potential for integration. We report on the recent progress regarding dissipative Kerr solitons generated from photonic chip-based ...

IEEE2018

Continuous-wave electron-photon interactions using chip-based high-Q Si3N4 microresonator

Rui Ning Wang, Tobias Kippenberg, Junqiu Liu, Arslan Sajid Raja, Guanhao Huang

We observe CW-driven electron-photon interaction using a fiber-integrated high-Q Si3N4 microresonator, enabled by strong resonantly enhanced coupling with the confined optical mode. (C) 2021 The Author(s) ...

IEEE2021

Reconfigurable radiofrequency filters based on versatile soliton microcombs

Tobias Kippenberg, Camille Sophie Brès, Maxim Karpov, Junqiu Liu, Jianqi Hu, Arslan Sajid Raja, Anton Lukashchuk, Jijun He

The rapidly maturing integrated Kerr microcombs show significant potential for microwave photonics. Yet, state-of-the-art microcomb-based radiofrequency filters have required programmable pulse shapers, which inevitably increase the system cost, footprint, ...

Nature Research2020

Free Electron Interaction with Nonlinear Optical States

Rui Ning Wang, Tobias Kippenberg, Arslan Sajid Raja, Guanhao Huang, Alexey Tikan, Aleksandr Tusnin, Zheru Qiu, Yujia Yang

We couple free electrons with nonlinear optical states and frequency combs in photonic chip-based microresonators. Intracavity nonlinear dissipative structures including optical solitons imprint unique fingerprints in electron spectra and their Ramsey inte ...

Optical Society of America2023

Two-soliton Microcombs Enabled Reconfigurable Microwave Photonic Filters

Tobias Kippenberg, Camille Sophie Brès, Maxim Karpov, Junqiu Liu, Jianqi Hu, Arslan Sajid Raja, Anton Lukashchuk, Jijun He

We demonstrate reconfigurable microwave photonic filters based on two-soliton microcombs. The filter passbands can be reconfigured inherently via the various angles between two solitons of microresonator, without involving programmable pulse shapers. (C) 2 ...

IEEE2020

Unifying Optical Frequency Metrology with Free-Electron Spectroscopy

Thomas La Grange, Rui Ning Wang, Tobias Kippenberg, Fabrizio Carbone, Bruce Michael Raleigh Weaver, Arslan Sajid Raja, Alexey Sapozhnik, Paolo Cattaneo, Yujia Yang

We establish a frequency link across the microwave, optical, and free-electron domains by a photonic chip-based electron phase modulator driven by a continuous-wave laser locked to a fully stabilized optical frequency comb. ...

Institute of Electrical and Electronics Engineers Inc.2024

Thermo-refractive noise in silicon nitride microresonators

Tobias Kippenberg, Erwan Guillaume Albert Lucas, Junqiu Liu, Arslan Sajid Raja, Nils Johan Engelsen, Guanhao Huang

Thermodynamic noises limit the frequency stability of resonators. Here, we present the first complete characterization of thermo-refractive noise in Si3N4 microresonators. The measurements are in good agreement with theoretical analysis and FEM simulation ...

IEEE2019

Electrically driven photonic integrated soliton microcomb

Tobias Kippenberg, Erwan Guillaume Albert Lucas, John David Jost, Maxim Karpov, Hairun Guo, Junqiu Liu, Arslan Sajid Raja, Andrey Voloshin

We demonstrate via self-injection locking an electrically driven soliton micro-comb by coupling a multi-frequency laser diode to a chip-scale high-Q Si3N4 microresonator. This approach offers a pathway for an integrated and ultra-compact microcomb source f ...

IEEE2019

Photonic Integrated K-Band Microwave Oscillator Based on Silicon Nitride Soliton Microcomb

Rui Ning Wang, Tobias Kippenberg, Erwan Guillaume Albert Lucas, Maxim Karpov, Hairun Guo, Junqiu Liu, Arslan Sajid Raja, Nils Johan Engelsen, Romain Dany Bruno Bouchand, Guanhao Huang, Jijun He

Using photonic integrated silicon nitride microresonators of quality factor exceeding 15 million, we demonstrate 19-GHz-repetition-rate single soliton with 35 mW optical power, and characterize the phase noise of the repetition rate in the K-band microwave ...

IEEE2019

Electrically Driven Ultra-compact Photonic Integrated Soliton Microcomb

Tobias Kippenberg, Erwan Guillaume Albert Lucas, John David Jost, Maxim Karpov, Hairun Guo, Junqiu Liu, Arslan Sajid Raja, Andrey Voloshin

We demonstrate a current-initiated soliton microcomb by injection-locking a multi-frequency laser diode to a chip-scale high-Q Si3N4 microresonator. This approach offers a pathway for integrated and ultra-compact microcomb source for high-volume applicatio ...

IEEE2019

High-yield, wafer-scale fabrication of ultralow-loss, dispersion-engineered silicon nitride photonic circuits

Rui Ning Wang, Tobias Kippenberg, Johann Emmeram Riemensberger, Junqiu Liu, Arslan Sajid Raja, Nils Johan Engelsen, Guanhao Huang, Jijun He

IEEE2021