Proposed Research C01：

Quantum control using cold atoms

The study using an optical lattice which has a scalability to a large-scale quantum system aims at the development of techniques for the quantum control and detection of single and several atoms with operations using optical spectra. The study using an atom chip is targeted at achieving quantum control of each of the single atoms captured in a potential with a stable and nonperiodic structure employing a superconducting persistent current.

In this proposed research, we aim at achieving coherent quantum control with two different approaches—the optical lattice and the atom chip—being cold neutral atoms as a common physical system and atom-cooling technology as a common platform to realize quantum computation and simulation.
In the optical lattice approach, we will develop a new technique to apply a stable magnetic field gradient to the optical lattice of ytterbium atoms and realize the quantum control and detection of single and a few atoms with operations using the optical spectrum of the atom. We will also perform quantum simulation of strongly correlated many-body quantum systems described by the Hubbard Hamiltonian, which is important in solid-state physics research, taking maximum advantage of the characteristics of an optical lattice system with its very high controllability and no impurities or lattice defects.
In the atom chip approach, we will develop techniques to realize the quantum control of single atoms captured on a superconductive atom chip through the combined study of light and superconductivity.
Through close cooperation among the members we will efficiently promote the development of experimental techniques required for both approaches such as the detection of single atoms, atom transfer, and the generation of a stable magnetic field gradient.

Details : 「Publications」