Alp Sipahigil (Advisor)

Research advised by BSAC Co-Director Alp Sipahigil

Sipahigil Group:  List of Projects | List of Researchers

Probing Defect-Mediated Electromechanical Coupling in Silicon

Zihuai Zhang
2025
Fall 2025 BSAC Research Review Presentation View Presentation View Slides...

California Plants Its Flag in the Quantum Future - Governor Newsom Visits BSAC Co-Director Alp Sipahigil's Lab

October 3, 2025
Governor signs landmark bill launching “Quantum California” and tours UC Berkeley labs driving the next wave of quantum innovation.
The bill helps the state grow the quantum economy and attract and retain businesses built on quantum information science, an area expected to evolve into a trillion-dollar-plus industry.

...

https://news.berkeley.edu/2025/10/03/gov-newsom-visits-uc-berkeley-to-sign-bill-…

Tae Gyu Ahn

Graduate Student Researcher
Electrical Engineering and Computer Sciences
Professor Alp Sipahigil (Advisor)
Ph.D. 2031 (Anticipated)

Tae Gyu Ahn is a PhD student in Electrical Engineering and Computer Sciences (EECS) at UC Berkeley. He graduated with honor (Summa Cum Laude) from Seoul National University with a B.Sc. in physics. He is currently advised by Alp Sipahigil as a member of the Quantum Devices Group researching superconducting quantum devices.

Darius F. Vera

Graduate Student Researcher
Electrical Engineering and Computer Sciences
Professor Alp Sipahigil (Advisor)
Ph.D. 2030 (Anticipated)

Darius F. Vera is a PhD student in the Electrical Engineering and Computer Sciences (EECS) Department at the University of California, Berkeley. Darius graduated from the University of San Diego's Honor Program with a B.S. in physics and a double major in mathematics with high awards (Summa Cum Laude, Phi Beta Kappa and Sigma Pi Sigma inductee). Previously, Darius as conducted research at the University of California, Santa Barbara through the UCSB Physics Research Experience for Undergraduates Program with the Palmstrom group. He has also intered at National Renewable Energy Laboratory...

Inside the Lab: Alp Sipahigil

25 September 2025 | Tutorial @ 9 AM - 10:20 AM, Open Session

Jarvis Auditorium, Grimes Engineering Center (First Floor)

Alp Sipahigil Alp Sipahigil

Assistant...

BPNX1059: Electric Field Control of Quantum Emitters in Silicon (New Project)

Lukasz Komza
Hanbin Song
Niccolo Fiaschi
Enrique Garcia
Ahmet Oguz Sakin
2025

Color centers in silicon are promising building blocks for photonic quantum processors. The T center, with its long spin coherence and telecom-band optical transitions, is a particularly compelling candidate for quantum repeater and memory applications. However, the impact of local charges and spins introduced during device integration remains poorly understood. In this work, we develop a silicon photonics platform that enables probing of single T centers under applied electric and magnetic fields, allowing systematic investigation of Stark shifts and ionization dynamics. These...

Leo Sementilli

Postdoctoral Researcher
Electrical Engineering and Computer Sciences
Professor Alp Sipahigil (Advisor)
PostDoc 2025 to present

Ahmet Oguz Sakin

Graduate Student Researcher
Electrical Engineering and Computer Sciences
Professor Alp Sipahigil (Advisor)
Ph.D. 2030 (Anticipated)

BPN996: Multiplexed Cavity-Enhanced Quantum Emitters in Silicon

Lukasz Komza
Hanbin Song
Niccolo Fiaschi
Xueyue (Sherry) Zhang
Yiyang Zhi
Yu-Lung Tang
2025

Color centers in silicon are emerging as promising candidates for photonic quantum processors. Among these color centers, the T center’s long spin coherence and telecom-band optical transitions make it an attractive target for quantum repeater and memory applications. Due to the T center’s long optical lifetime, cavity enhancement is an important prerequisite to any practical implementation of quantum protocols. In this work, we demonstrate a silicon photonics platform enabling a high yield of strongly enhanced T centers from distinct cavities through a single bus waveguide. We use a...

BPN980: Spin-Photon Interfaces in Silicon Photonics

Hanbin Song
Lukasz Komza
Niccolo Fiaschi
Xueyue (Sherry) Zhang
Yu-Lung Tang
Yiyang Zhi
2025

Point defects in crystalline materials can introduce localized defects states with optical transitions, creating color centers. Color centers in silicon have recently shown their potential as telecom-band single photon emitters. Leveraging the mature semiconductor fabrication techniques, silicon color centers can be fabricated on a large scale and are compatible with integrated photonics. Among all the silicon color centers investigated so far, T centers provide a spin-photon interface suitable for quantum networking and communication applications. In this project, we demonstrate coherent...