CHEN Yuanzhen Associate Professor

Phone:0755-88018226

Email:chenyz#sustech.edu.cn

personal profile

The research interest of our team is experimental investigation of superconducting quantum computation and quantum simulation.
 
As the means and precision of manipulating quantum systems have advanced, the idea of quantum information, namely, processing information based on the basic principles of quantum mechanics, has also become more plausible. Quantum information processing uses quantum resources that have no classical counterparts, such as quantum superposition and entanglement, to process information, and has been shown, both theoretically and experimentally, to have tremendous advantage over classical information processing in certain scenarios. For example, quantum algorithms for integer factorization and searching unsorted database are much more efficient then known classical algorithms. Furthermore, classical simulation of a quantum system is believed to be practically intractable, while quantum simulation, using one quantum system to simulate another one, may be a straightforward and natural solution.
 
Among the various proposed schemes of realizing quantum computation and quantum simulation, the one based on superconducting quantum circuits appears to be promising, due to the fact that such circuits are relatively easy to fabricate, control, and scale up. Using quantum circuits based on superconducting Josephson junctions, we can build the basic block for quantum information processing, namely, the qubits (quantum bits), as well as controllable coupling between qubits. It is believed by many researchers that quantum computation based on superconducting circuits may first reach the so called Quantum Supremacy,  a clear demonstration of the ability of quantum computing devices to solve problems that classical computers practically cannot.
 
Our team devotes to experimentally advancing the field of superconducting quantum computation and quantum simulation. The current research focus includes:
 
1. Superconducting quantum chips. We use Josephson-junction-based superconducting quantum devices to build qubits and various qubit-coupling schemes, as well as measurement apparatus approaching quantum limits. Besides widely adapted design, we are also interested in developing novel architectures such as hybrid quantum systems that couple superconducting circuits and other quantum devices.
 
2. Quantum computation and quantum simulation based on superconducting circuits. We closely collaborate with theorists to explore the possibility of realizing quantum computation and quantum simulation on superconducting quantum chips. Our current interest includes, but limited to, geometric quantum computation, quantum automata, quantum few-body systems, and quantum simulation of exemplary models in condensed matter physics. In addition, we always have a keen interest in using superconducting quantum systems to explore fundamental issues of quantum mechanics.

Research Areas

  • Experimental Superconducting Quantum Computing

Educational Background

1998/9 - 2005/5: University of Maryland, Ph.D.

1995/9 - 1998/6: Chinese Academy of Sciences, Institute of Semiconductors, M.S.

1991/9 - 1995/6: University of Electronic Science and Technology of China, B.S.



Professional Experience

2021/7 - present: Southern University of Science and Technology, Associate Professor
2015/3 - 2021/7: Southern University of Science and Technology, Assistant Professor

2009/1 - 2015/2: Rutgers, the State University of New Jersey, Research Associate

2006/7 - 2008/7: University of Pennsylvania, Postdoctoral Fellow

2005/6 - 2006/6: University of South Carolina, Postdoctoral Fellow



Selected Publication

1. A superconducting coplanar waveguide ring resonator as quantum bus for circuit quantum electrodynamics, App. Phys. Lett. 118, 184001 (2021)
2. Experimental realization of phase-controlled dynamics with hybrid digital-analog approach, npj Quant. Info. 7, 73 (2021)
3. Simulation of higher-order topological phases and related topological phase transitions in a superconducting qubit, Sci. Bull. 66, 1168 (2021)
4. Simulation of a topological phase transition in a Kitaev chain with long-range coupling using a superconducting circuit, Phys. Rev. B 101, 035109 (2020)
5. Experimental realization of non-adiabatic shortcut to non-Abelian geometric gates, Phys. Rev. Lett. 122, 080501 (2019)