Fwd: [eecs-announce] Dissertation Talk: Quantum emitters in silicon for scalable quantum photonics

[Leyla Kabuli]

We have a dissertation talk from one of our Photobears members coming up on Monday August 11 at 1pm. Come learn about and celebrate Yertay's work!

Best,

Leyla

---------- Forwarded message ---------
From: Yertay Zhiyenbayev <eecs-a...@lists.eecs.berkeley.edu>
Date: Mon, Aug 4, 2025 at 3:24 PM
Subject: [eecs-announce] Dissertation Talk: Quantum emitters in silicon for scalable quantum photonics
To: <eecs-a...@lists.eecs.berkeley.edu>

Title: Quantum emitters in silicon for scalable quantum photonics

Speaker: Yertay Zhiyenbayev

Advisors: Boubacar Kanté

Date: Monday, August 11, 2025

Time: 1 PM (PST)

This is a hybrid event, held in person and virtually over Zoom.

Location (In-person): 540AB Cory Hall

Location (Zoom): https://berkeley.zoom.us/j/95744351425?pwd=MDAFy0BOiGdb6xZRmnrM99eLkXuhY3.1 

Meeting ID: 957 4435 1425

Passcode: 403827

Abstract:

The development of quantum systems in silicon presents a scalable and technologically integrable pathway for advancing quantum technologies. Silicon’s mature fabrication infrastructure and low interface complexity make it an ideal platform for realizing large-scale quantum architectures. Recently, individual atomic-scale defects in silicon that emit single photons in the telecom band have been isolated. These defects behave like artificial atoms, enabling controlled and deterministic single-photon emission.

In this talk, I will discuss how such single-photon-emitting defects (quantum emitters) can be formed in silicon using carbon implantation and rapid thermal annealing. I will then present the first all-silicon quantum light source, achieved by integrating a single emissive defect into a silicon nanophotonic cavity. This work demonstrates a 30-fold enhancement in photoluminescence, near-unity atom–cavity coupling efficiency, and an 8-fold increase in emission rate from the quantum emitter. Finally, I will discuss a technique for the local and programmable creation of single defects using femtosecond laser annealing.

Thanks and regards,

Yertay 

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