128 citations · 376 across the 15 of their papers we have counts for
16 papers
Scalable Hybrid Device Architecture on Thin-Film Lithium Tantalate for Long Distance Quantum Network Nodes with Atomic Frequency Comb Quantum Memories
Ayed Sayem, Towsif Taher
Scalable photonic circuits are essential for realizing practical quantum networks beyond proof-of-principle demonstrations. Although diamond-based integrated photonics has been ext…
Performance of Capacitively Loaded RF Electrodes on SiO2/Si Substrates for High-Speed Electro-Optic Modulators
Ayed Sayem, Ting-Chen Hu, Mark Cappuzzo +3
We experimentally investigate conventional and capacitively loaded traveling-wave RF electrodes fabricated on thermally grown SiO on high-resistivity silicon substrates for hig…
High-power handling and bias stability of thin-film Lithium Tantalate microring and coupling resonators
Ayed Sayem, Shiekh Zia Uddin, Ting-Chen Hu +4
In this paper, we demonstrate the ultra-high-power handling capability and DC bias stability of optical microring and electro-optic (EO) coupling resonators on the thin-film lithiu…
A tunable FP Perot coupling interferometer on thin-film lithium niobate
Ayed Al Sayem, Heqing Huang, Ting-Chen Hu +4
We experimentally show an electro-optic tunable Fabry-Perot cavity on thin-film lithium niobate (TFLN). Instead of tuning the cavity phase and thus resonant frequency, we demonstra…
Periodically poled thin-film lithium niobate ring Mach Zehnder coupling interferometer for efficient quantum frequency conversion
Mrinmoy Kundu, Bejoy Sikder, Mark Earnshaw +1
Quantum frequency conversion is unavoidable for a true quantum communication network as most quantum memories work in the visible spectrum. Here, we propose a unique design of a qu…
Periodically poled thin-film lithium niobate ring Mach Zehnder coupling interferometer as an efficient quantum source of light
Mrinmoy Kundu, Bejoy Sikder, Heqing Huang +2
Single photons and squeezed light are the two primary workhorses for quantum computation and quantum communication. Generating high-efficiency single photons with high purity and h…
Record Photon Information Efficiency with Optical Clock Transmission and Recovery of 12.5 bits/photon over an Optical Channel with 77 dB Loss
René-Jean Essiambre, Cheng Guo, Sai Kanth Dacha +18
We experimentally demonstrate optical detection at 12.5~bits per incident photon, 9.4~dB higher than the theoretical limit of conventional coherent detection. A single laser transm…
Bidirectional electro-optic conversion reaching 1% efficiency with thin-film lithium niobate
Yuntao Xu, Ayed Al Sayem, Linran Fan +7
Superconducting cavity electro-optics (EO) presents a promising route to coherently convert microwave and optical photons and distribute quantum entanglement between superconductin…
Mitigating photorefractive effect in thin-filmlithium niobate microring resonators
Yuntao Xu, Mohan Shen, Juanjuan Lu +3
Thin-film lithium niobate is an attractive integrated photonics platform due to its low optical loss and favorable optical nonlinear and electro-optic properties. However, in appli…
Photorefraction-induced Bragg scattering in cryogenic lithium niobate ring resonators
Yuntao Xu, Ayed Al Sayem, Chang-Ling Zou +2
We report intracavity Bragg scattering induced by photorefractive (PR) effect in high-Q lithium niobate (LN) ring resonators at cryogenic temperatures. We show that, when a cavity…
Cavity piezo-mechanics for superconducting-nanophotonic quantum interface
Xu Han, Wei Fu, Changchun Zhong +8
Hybrid quantum systems are essential for the realization of distributed quantum networks. In particular, piezo-mechanics operating at typical superconducting qubit frequencies feat…
Lithium-Niobate-on-Insulator Waveguide-Integrated Superconducting Nanowire Single-Photon Detectors
Ayed Al Sayem, Risheng Cheng, Sihao Wang +1
We demonstrate waveguide-integrated superconducting nanowire single-photon detectors on thin-film lithium niobate (LN). Using a 250 um-long NbN superconducting nanowire lithographi…
All Dielectric Biaxial Metamaterial: A New Route to Lossless Dyakonov Waves with Higher Angular Existence Domain
Ayed Al Sayem
In this article, we propose and numerically analyze an all dielectric biaxial metamaterial [ADBM] constructed by multilayer pattering of a sub-wavelength ridge array of Silicon and…
Broad Angle Negative Refraction in Lossless all Dielectric Multilayer Asymmetric Anisotropic Metamaterial
Ayed Al Sayem, Mahdy Rahman Chowdhury Mahdy, Md. Saifur Rahman
In this article, it has been theoretically shown that broad angle negative refraction is possible with asymmetric anisotropic metamaterials constructed by only dielectrics or loss…
Negative Refraction with High Transmission in Graphene-hBN Hyper Crystal
Ayed Al Sayem, Mahdy Rahman Chowdhury Mahdy, Ifat Jahangir +1
In this article, we have theoretically investigated the performance of graphene-hexagonal Boron Nitride hyper crystals to demonstrate all angle negative refraction.Hexagonal Boron…
Ultrathin Ultra-broadband Electro-Absorption Modulator based on Few-layer Graphene based Anisotropic Metamaterial
Ayed Al Sayem, Mahdy Rahman Chowdhury Mahdy, Ifat Jahangir +1
In this article, a few-layered graphene-dielectric multilayer (metamaterial) electro-optic modulator has been proposed in the mid and far infrared range that works on electro-absor…