Prof. Irfan Siddiqi
Physics Department at University of California Berkeley
1st February 2023, 11:00am - 12:00pm Auditorium 1 (Masdar Office) (GST)
|Quantum Computing with Qudits
|Quantum processors with of order a few hundred qubits based on superconducting circuitry have recently demonstrated computing power on par with the most advanced classical supercomputers for select problems. Current hardware is, however, prone to errors from materials defects, imperfect control systems, and the leakage of quantum information into unwanted modes in the solid-state. I will describe the major decoherence pathways present in state-of-the-art superconducting quantum processors, illustrate techniques to maximize the computing power of imperfect qubits, and introduce including new architectures using qutrits and ququarts.
|Irfan Siddiqi is the head of the Physics Department at UC Berkeley where he is the Douglas Giancoli Chair Professor. He is also a professor of Electrical Engineering and Computer Science, and a Faculty Scientist at Lawrence Berkeley National Laboratory. His research group focuses on the development of advanced superconducting circuits for quantum information processing, including computation and metrology. Irfan is also the director of the Advanced Quantum Testbed at LBNL, which develops and operates full-stack quantum computing platforms based on superconducting qubits. He is known for key contributions to quantum measurement science, including real time observations of wavefunction collapse, tests of the Heisenberg uncertainty principle, quantum feedback, and the development of a range of microwave frequency, quantum noise limited amplifiers and detectors. Irfan is a fellow of the American Physical Society, and the recipient of its George E. Valley prize and Joseph F. Keithley Award. He is also a recipient of the Berkeley Distinguished Teaching Award—the university’s highest award for commitment to pedagogy.