Practical quantum computing: Single qubit gate realization and properties characterization

Kuo-Feng Chiu^1,2*, Shih-Hsiang Chao^1,2, Tse-Ming Chen^1,2

¹Department of Physics, National Cheng Kung University, Tainan 701, Taiwan
²Center for Quantum Frontier of Research and Technology, National Cheng Kung University, Tainan 701, Taiwan

* Presenter:Kuo-Feng Chiu, email:x28831984@gmail.com

Quantum computing is considered to be ideal for studying complex computation problems such as molecular simulations, global minimum search tasks, or quantum machine learning. In order to implement the sophisticated computation, many studies of quantum algorithms have been presented, such as Shor’s algorithm or Grover’s algorithm. Quantum algorithms are composed of many different quantum logic operations, whose practical realization requires an ability to manipulate and measure the state of the quantum bit, or qubit. Here, we demonstrate microwave techniques for operating a single qubit gate on a two-level artificial atom coupled to a superconducting cavity, starting from punchout verifying the coupled system, qubit spectroscopy to find the qubit frequency, to Rabi oscillations obtaining the chevron pattern. Characterizing these properties to implement single qubit gate operations paves the way to the foundation of quantum computing.

Keywords: superconducting qubit, quantum computing, single qubit gate, Rabi oscillation