Proposed Research C02：

Quantum information processing using an ion trap system

We will develop ion traps that can be integrated and that can be easily coupled to another quantum system, and perform quantum gate operation using spatial control of ions. We will also conduct entanglement operations, generate a superposition state, and form quantum gates for robust and high-fidelity quantum computation using a method based on rapid adiabatic passage that is simpler than conventional methods.

Laser-cooled atomic ions realize an ideal isolated physical system and are considered to be one of the most promising candidates for realizing quantum information processing. Basic quantum algorithms unavailable for other physical systems have been verified for a small number of ions. The main areas of research include technology for integrating traps into large traps, high-fidelity quantum gates for fault-tolerant computation, and coupling with another quantum system. In our previous research, we developed technology for cooling to the ground vibrational state of ions and a new terahertz-separated quantum bit using two metastable states of the Ca ion to establish basic technologies required for quantum gate experiments. In this research, we will develop a planar ion trap comprising an easily integrated open type trap, and will perform experiments on operations at room temperature and below, quantum gates, and the spatial control of ions between ions. We will also conduct entanglement operations, generate a superposition state, and form quantum gates for robust and high-fidelity quantum computation using a method based on rapid adiabatic passage or stimulated Raman adiabatic passage. In these experiments, we will investigate the possibility of coupling ions in the ion trap with other microscopic and mesoscopic systems (light, superconducting systems, semiconductor systems, micromechanical systems, transmission lines).

Details : 「Publications」