Group Members

Hartmut Häffner

PI
Office Location: 301H, Physics South
Office Phone: (510) 664-4299
Lab Phone: (510) 664-4296

I like to experiment with the quantum information stored in trapped ions. I lead now a group sharing the same passion. In my previous life, I measured how strong electric fields change the magnetic moment of the electron, studied quantum chaos, ran quantum gates, characterized entangled states, and teleported quantum information over 10 micrometers. Notable current achievements of my group are ultra low-noise ion traps, 3D-printed ion traps, control over a quantum rotor, and trapped elecrons.

Claire Legas

Administrative Assistant

Erhan Saglamyurek

Project Scientist

Neha Yadav

Post-Doc

Qiming Wu

Post-Doc

Ke Sun

Post-Doc

Baiyi Yu

Post-Doc

Kento Taniguchi

Post-Doc

Swapnil Patel

Post-Doc

Nicole Greene

Grad Student

Having previously worked on the local Lorentz invariance experiment, I now spend my time studying the noise sensitivity of entanglement gates. Outside the lab I enjoy exploring San Francisco, watching films, and hiking.

Qian Yu

Grad Student

I'm interested in the physical realization of quantum computation and techniques of ion trapping, and I like to explore the quantum dynamics of strongly interacting systems including coherent evolution and decoherence. Outside the lab I like traveling, reading, cooking and playing board games.

Shuqi Xu

Grad Student

My research interests lie in tackling challenges towards scalable trapped ion quantum computers, as well as the emergent physics revealed in such quantum system. When not in the lab, I enjoy traveling, playing video games, watching and playing soccer.

Ben Saarel

Grad Student

Ryan Tollefsen

Grad Student

Justin Phillips

Grad Student

Izze Sacksteder

Grad Student

I’m Izze and I majored in math and physics at Willamette University in Salem Oregon. I joined the Häffner group to work on the electron trap project and I’m particularly interested in cooling electrons in a Paul trap using a tank circuit. In my free time I like gardening and going to shows to see local Bay Area bands.

Bingran You

Grad Student

Ozgur Sahin

Grad Student

Yu-Lung Tang

Grad Student

Andris Huang

Grad Student

I was a Berkeley undergrad in Physics and CS and I'm continuing my research here on the trapped electron project. My current research interests lie in the control of electrons using RF electronics. If you are an undergrad student interested in working on trapped electrons, feel free to email me. Note that QCB members will be prioritized :)

Jiarui Liu

Grad Student

Guangqi Gao

Grad Student

I am Guangqi Gao, a PhD student in the Applied Science & Technology program. I received my bachelor's degree in Physics from Peking University in 2024, where I conducted undergraduate research on quantum chaos. Currently, I am working on the QuantNet project in Hartmut’s lab. After completing my undergraduate studies, I decided to pursue engineering-oriented research. Hartmut’s lab is the perfect place for me, as trapped ion systems lie at the intersection of physics and engineering.