Events

Light sources for scalable quantum interconnect: from single photons to scale-invariant lasers

Walid Redjem, Empire Innovation Assistant Professor at SUNY Albany

Presented in-person in Goergen 101 and on Zoom

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Abstract

For long distances, the photon serves as the principal carrier of information in modern technology and is likely to be a key component in building an efficient quantum network. Each node in this network is a small quantum computer, and each node is connected with an optical link to facilitate the transfer of entanglement over extended ranges.

However, the main challenge lies in developing effective qubit-photon interfaces at scale, which requires overcoming issues related to materials integration and quantum coherence, among others.

In the first part of the talk, I will discuss the potential of incorporating quantum emitters in silicon for CMOS-compatible quantum devices. This exploration aims to address the compatibility and integration challenges affecting the performance of quantum emitters.

In the second part, I will briefly touch upon the imperative need for an on-chip coherent light source or laser. Such a source should have the capability to emit a significant amount of power by scaling up the size of the laser while maintaining its coherence. This on-chip coherent light source is critical for ensuring robust and scalable quantum information transfer within the proposed quantum network architecture.

Biography

Walid Redjem currently holds the position of Empire Innovation Assistant Professor at SUNY Albany within the College of Nanotechnology, Science and Engineering. He earned his Ph.D. in physics from the University of Montpellier in 2020 and subsequently undertook a postdoctoral position at UC Berkeley. His primary research interests revolve around silicon quantum photonics, with a particular enthusiasm for deterministic quantum light sources, cryogenics CMOS, and quantum devices for sensing and communication. Walid Redjem's publications have been featured in journals such as Nature, Nature Communications, and Physical Review Letters, among others. His current research is dedicated to the development of scalable quantum internet.