Walid Redjem

Walid Redjem is the Empire innovation Assistant Professor of the college of nanoscience and engineering at UAlbany. He leads the Redjem Lab which focuses on quantum photonic research to advance quantum computation, communication and sensing. His group studies a wide range of physical systems including lasers, color centers and integrated photonics. 

Prior to joining UAlbany in 2024, he was a postdoctoral scholar at UC Berkeley EECS. He received his PhD in Physics from University of Montpellier in 2020 and his BS degrees in Physics and Electrical Engineering from University of Nice in 2013. The group is actively seeking highly motivated students willing to strongly contribute to the progress of science, in the areas of engineering, applied physics, physics and optics. 

Motivated and hands-on undergraduate students are encouraged to contact Prof. Redjem and discuss the possibility to contribute to our mission.

RESEARCH INTERESTS

• Quantum photonics
• Spin qubits
• Silicon photonics
• Quantum network
• Lasers physics
• Nano optical devices
• Nonlinear optics
• Solid-state quantum technologies
• Spectroscopy
• Quantum optics

PUBLICATIONS

Selected Journal Publications

• Zhiyenbayev Y, Redjem W, Ivanov V, Qarony W, Papapanos C, Simoni J, et al. Scalable manufacturing of quantum light emitters in silicon under rapid thermal annealing. Opt Express. 2023 Feb 27;31(5):8352–62.
• Schenkel T, Redjem W, Persaud A, Liu W, Seidl PA, Amsellem AJ, et al. Exploration of Defect Dynamics and Color Center Qubit Synthesis with Pulsed Ion Beams. Quantum Beam Sci. 2022;6(1):13.
• Redjem W, Zhiyenbayev Y, Qarony W, Ivanov V, Papapanos C, Liu W, et al. All-silicon quantum light source by embedding an atomic emissive center in a nanophotonic cavity. Nat Commun. 2023 Jun 7;14(1):3321.
• Redjem W, Amsellem AJ, Allen FI, Benndorf G, Bin J, Bulanov S, et al. Defect engineering of silicon with ion pulses from laser acceleration. Commun Mater. 2023 Mar 27;4(1):1–10.
• Redjem W. Optical spectroscopy of G-centers in silicon: from ensemble to single centers. 2019;
• Redjem W, Durand A, Herzig T, Benali A, Pezzagna S, Meijer J, et al. Single artificial atoms in silicon emitting at telecom wavelengths. Nat Electron. 2020;3(12):738–43.
• Qin H, Redjem W, Kante B. Tunable and enhanced optical force with bound state in the continuum. Opt Lett. 2022;47(7):1774–7.
• Jhuria K, Ivanov V, Polley D, Zhiyenbayev Y, Liu W, Persaud A, et al. Programmable quantum emitter formation in silicon. Nat Commun. 2024;15(1):4497.
• Jia Z, Seclì M, Avdoshkin A, Redjem W, Dresselhaus E, Moore J, et al. Disordered topological graphs enhancing nonlinear phenomena. Sci Adv. 2023;9(14):eadf9330.
• Jia Z, Qarony W, Park J, Hooten S, Wen D, Zhiyenbayev Y, et al. Interpretable inverse-designed cavity for on-chip nonlinear photon pair generation. Optica. 2023;10(11):1529–34.
• Jaffal A, Redjem W, Regreny P, Nguyen HS, Cueff S, Letartre X, et al. InAs quantum dot in a needlelike tapered InP nanowire: a telecom band single photon source monolithically grown on silicon. Nanoscale. 2019;11(45):21847–55.
• Ivanov V, Simoni J, Lee Y, Liu W, Jhuria K, Redjem W, et al. Effect of localization on photoluminescence and zero-field splitting of silicon color centers. Phys Rev B. 2022;106(13):134107.
• Herzig T, Räcke P, Raatz N, Spemann D, Redjem W, Gerlach JW, et al. Creation of quantum centers in silicon using spatial selective ion implantation of high lateral resolution. In IEEE; 2018. p. 136–9.
• Durand A, Baron Y, Redjem W, Herzig T, Benali A, Pezzagna S, et al. Broad Diversity of Near-Infrared Single-Photon Emitters in Silicon. Phys Rev Lett. 2021 Feb 22;126(8):083602.
• Contractor R, Noh W, Redjem W, Qarony W, Martin E, Dhuey S, et al. Scalable single-mode surface-emitting laser via open-Dirac singularities. Nature. 2022;608(7924):692–8.
• Beaufils C, Redjem W, Rousseau E, Jacques V, Kuznetsov AY, Raynaud C, et al. Optical properties of an ensemble of G-centers in silicon. Phys Rev B. 2018;97(3):035303.