Angela Kou
University of Illinois Urbana-Champaign, IL·Physics·Early-career
Quantum computers could tackle hard problems in fields from materials to agriculture, but today they remain small. Their building blocks, called qubits, lose information to noise from their surroundings.
- Fields
Physics
Engineering
Materials Science
- Topics
quantum computing
qubits
transmon
- Grants
- 1 known grant, through Jul 2031
What they work on
- Locate the origin of local, unpredictable defects in superconducting transmon qubits using a scanning microwave resonator probe that measures time-resolved qubit behavior.
- Measure the lifetimes of Andreev spin qubits, spin-based qubits in superconducting junctions, built on materials expected to give long coherence times but hard to make good circuits on.
- Build synthetic qubit lattices that mimic spin liquid models and measure the dynamics of their excitations to judge whether they could serve as a new qubit platform.
- Use the tunable resonator's in-place adjustment to maximize coupling to each qubit platform and use the results to design better qubits.
More about the research
Error correction can combine many noisy physical qubits into one reliable logical qubit, but at today's quality this takes thousands of physical qubits. Making better individual qubits would shrink that burden.
Why it matters
Reliable quantum computers are limited by how many physical qubits error correction needs. By finding where energy loss in transmons and Andreev spin qubits comes from, and testing new qubit platforms, this work could guide the design of better qubits. That could lower the number of qubits needed and help bring practical quantum computing closer for applications such as semiconductor and agricultural research.
Known grants
From NIH and NSF research grants. Labs often have other funding we can't see.
Closest labs
Steven Girvin
Yale University, CT·Physics
Design and deploy superconducting quantum hardware in which each logical qubit is one microwave photon shared between two long-lived resonators. This 'dual-rail' encoding turns photon loss into a detectable, flagged erasure error.
Ruichao Ma
Purdue University, IN·Physics·Early-career
Develop a dynamically tunable broadband bath, an engineered reservoir the circuit can exchange energy with on demand, and use it to stabilize and manipulate collective photon phases in superconducting circuits.
Jifa Tian
University of Wyoming, WY·Physics
Determine the roles and behavior of unconventional magnetic domains, regions where atomic magnetic moments align, in few-layer two-dimensional van der Waals magnets using magnetotransport and low-temperature magnetic force microscopy.
The school
University of Illinois Urbana-Champaign: 41 labs on PI Pages, $907M a year on research, 870 research doctorates a year.
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