Principal investigator

Prof. Kater Murch

2008 Ph.D., University of California, Berkeley
2007 MA, University of California, Berkeley
1998 BA, Reed College

Professional History
2018-present Associate Professor, Washington University
2014-2018 Assistant Professor, Washington University
2008-2013 Postdoctoral Scholar, University of California, Berkeley

Kater received his B.A. in physics from Reed College in 2002. After that, he spent a long year slacking off, working as a bee keeper, honing his guitar skills, and studying the cello before finally starting his Ph.D. work at UC Berkeley with Prof. Dan Stamper-Kurn. After some time studying Bose-Einstein condensation in multiply connected geometries, Kater focused his interests on general problems in quantum measurement, and performed some of the first studies of position measurement quantum backaction. After receiving his Ph.D. in 2008, Kater continued work in the Stamper-Kurn group studying a possible super-solid phase of matter which occurs in spinor-Bose-Einsten condensates, and constructing a state of the art BEC apparatus. After a short postdoc in the Stamper-Kurn Group, Kater joined Irfan Siddiqi's group to study superconducting quantum circuits, where he continued to study basic questions in quantum measurement and quantum noise. In 2014 Kater joined the faculty at Washington University. In 2015 Kater received the Alfred P. Sloan Fellowship in Physics. Kater received the St. Louis Academy of Science Innovation Award in 2017. In 2018, Kater received the Cottrell Scholar Award and an NSF CAREER Award.

An interview with Kater: Wine, Quantum Mechanics and the Nature of Time
Cheating Heisenberg: Feature in Reed Magazine
Office: 218 Crow       Phone: (314) 935-7765

Current members


Weijian Chen

I received my B.Sc. in optical information science & technology from University of Science and Technology of China in 2012. Then I received my M. S. and Ph.D. in electrical engineering from Washington University in St. Louis in 2015 and 2018, respectively. My PhD research focused on photonic resonators and their applications in laser, optical sensing, and non-Hermitian physics. Currently, I am working on superconducting circuits/qubits and quantum sensing. In my free time, I like hiking, reading, and cooking with family.
Office: Crow 108       Phone: (314) 935-4723

Xiayu Linpeng

I received my B.S. degree at Zhejiang University in 2014, where I studied quantum measurements on superconducting phase qubits coupled with a microwave resonator. Then I got my Ph.D. at the University of Washington in 2020, where I worked on spin control and coherence measurements for dopant qubits in direct bandgap semiconductors. Currently, I’m doing research on quantum thermodynamics in superconducting circuits at Murch group.
Office: Crow 106       Phone: (314) 935-4723

Graduate students

Jonathan Monroe

Howdy! I graduated from Texas A&M University where I did a little bit of everything that I could. I graduated with a B.Sc. in physics, a B.A. math, and minors in computer science and astrophysics. My main research at the time was investigating how galactic environments changed the way galaxies grow. Now in the Murch Lab I'm doing something a bit different by studying how concepts from thermodynamics extend to the quantum regime. I ultimately aim to develop better quantum computing protocols through a thorough understanding of quantum measurement. When I'm not in the lab I love playing ultimate frisbee, facing the outdoors, and talking philosophy.
Office: Crow 106       Phone:(314) 935-4723

Maryam Abbasi

I did my undergrad and master in physics at Ferdowsi University of Mashhad, Iran. My master's degree was focused on Ads/CFT correspondence, more specifically on holographic entanglement entropy. I joined Murch lab in the summer of 2018. Currently, I am working on non-hermitian systems and also exploring potential setups for designing a "giant atom" in a circuit QED setup.
Office: Crow 106       Phone: (314) 935-4723

Xingrui Song

I am from Zhejiang province, China. I graduated from the School of the Gifted Young (SCGY) of University of Science and Technology of China (USTC) with a B.Sc. degree in Atomic & Molecular Physics. During my undergraduate years, I studied PT-symmetric Hamiltonians in CAS Key Laboratory of Microscale Magnetic Resonance. I spent my summer of 2017 at Texas A&M University numerically investigating partial differential equations derived from a newly proposed gravity theory. Quantum mechanics is amazing. I am interested in almost every aspect of quantum mechanics, from quantum information to quantum gravity, because I believe they are mutually connected. In the Murch lab, I am currently working on a project in quantum thermodynamics. I am also interested in the promising technologies of quantum computation as well as artificial intelligence.
Office: Crow 106       Phone: (314) 935-4723

Yunzhao Wang

Office: Crow 106       Phone: (314) 935-4723

Daria Kowsari

Hey There! I graduated from K. N. Toosi University of Technology in Tehran, Iran with a B.Sc. in solid state physics. During my undergrad, I mainly focused on medical physics and, particularly, radiation therapy using gamma rays. Then I tried to have a little of change and expand my knowledge. So, I decided to pursue my education at WashU to explore quantum mechanics in Kater's lab. Right now my research pertains to exploring non-Markovian quantum processes, reconstructing the memory kernel of open quantum system dynamics, and finding meaningful definitions of heat and work along quantum trajectories. What's more, I'm trying to find a way to connect machine learning techniques to my research. Putting physics aside, I've got a knack for video games, swimming, cooking and whenever I get time, I read philosophy books and listen to heavy metal music.
Office: Crow 106       Phone: (314) 935-4723

Kaiwen Zheng

I received my B.S. in materials science from Arizona State University where I learned about growing epitaxial thin films of high temperature superconductor. I then went to the University of Florida and received an M.S. in materials science while slowly becoming familiar with the craft of semiconductor fabrication through industrial experience in Analog Devices Inc. My scientific idol is Prof. Heike Kamerlingh Onnes. I would love to take on a similar scientifc journey as his, where the crafts of fabrication and measurement are meticulously studied and utilized to discover novelty. I believe that the research in superconducting qubits can fulfill my naive but romantic dream while also allowing me to be a part of the challenging yet exciting journey of the second quantum revolution.
Office: Crow 106       Phone: (314) 935-4723

Undergraduate students

Tommy Alamin

Clayton Knittel

Former members

Former post-docs

Neda Forouzani
Neda was a postdoc in the group from 2014-2016 at LPS Maryland.
Dian Tan
Dian graduated from the University of Science and Technology of China, Hefei, Anhui, P. R. China in 2012. Later that year, Dian came to Washington University for graduate studies in physics and researched weak values and continuous quantum measurement with post-selection. Dian graduated with his PhD in 2017 and continued as a post-doc with the Murch lab into 2018.

Former graduate students

Mahdi Naghiloo

I got my B.Sc. in solid state physics from the University of Zanjan (ZNU) near my hometown Hidaj. For my master degree, I studied quantum optics at Sharif University of Technology (SUT), Tehran, Iran. I moved to the US in 2013 to start my Ph.D. study in Murch Lab, Washington University. Here I got my hands dirty with several experiments on quantum physics with superconducting circuits, exploring fundamental *problems* in the quantum world. I mostly focus on measurement dynamics, quantum thermodynamics, and aspects of metrology with quantum circuits. Our main tool for these studies is a technique called "weak measurement" by which we can continuously monitor the evolution of a single qubit without collapsing the quantum wavefunction.
Office: Crow 106       Phone:(314) 935-4723

Patrick Harrington

After completing my B.Sc. in Physics at Gordon College and researching laser spectroscopy with Thermo Fisher Scientific for a year, I joined the Murch group here at Washington University as a graduate student. Throughout my PhD, I have focused on open quantum systems with experiments on superconducting circuits. I look to explore the physics of open quantum systems, by addressing driven and dissipative interactions between quantum circuits and their electromagnetic environment. I also enjoy long treks, making music, and general banter.

Personal webpage:
Office: Crow 108       Phone: (314) 935-4723

Former undergraduates

Arian Jadbabaie
Chris Munley
Satcher Hsieh
Rohit Unni
Fan Chen
Arman Guerra
Michael Seitanakis