Title:Nonlinear quantum optics of mechanical oscillators with trapped ions

Speaker: Dzmitry Matsukevich, National University of Singapore.

Time:2024-12-18 16：00

Venue: C302，New Science Building

Abstract:Due to large accessible Hilbert space, mechanical motional states of the trapped ions are attractive for quantum simulations and quantum computing. However such applications require strong and well controlled nonlinear interactions between these modes. In this talk I discuss how nonlinear interaction between the motional modes similar to degenerate and non-degenerate parametric oscillator models in quantum optics arise due to anharmonicity of the Coulomb interaction between the ions. I will also show how coupling of spin and motion of the ions enables SWAP test for measuring overlap between two infinitely-dimensional quantum states of harmonic oscillators, and allows for approximate implementation of a bosonic cubic phase gate for the motional mode of a trapped ion.

Bio:Dzmitry Matsukevich is an Associate Professor at the Centre for Quantum Technologies and Department of Physics at the National University of Singapore. His research interests include trapped ions and their applications to quantum simulations, quantum information processing with continuous variables, quantum thermodynamics, and nonlinear quantum optics. Dzmitry was awarded a Ph.D. in Physics from Georgia Institute of Technology in 2006.