Abstract: The idea of quantum computing was first proposed in the early 1980s, gaining momentum with the discovery of quantum algorithms that demonstrated the potential advantages of quantum computers over classical computers. Subsequently, a remarkable interest and investment in quantum information science field has been observed across diverse institutions, fostering the development of global collaborations.
However, regardless of the platform for quantum technology, a major challenge in its utilization lies in overcoming the decoherence of the quantum system caused by interaction of the system with its environment. Specifically, even with the isolation of trapped ions, exposure to various sources of noise or photon scattering can result in the “heating” of these ions, leading to a potential loss of quantum coherence in their motional states.
In this talk, I will introduce several methods for measuring the temperature of a trapped ion with their respective limitations and explore the heating rate of the ion under the influence of random noise sources. Also, I will explain how measurement of the qubit state by photon scattering can induce heating, the rate of which depends on the internal qubit state and discuss possible solutions for this measurement-induced heating.
Lastly, I will propose several future projects involving a new ion trap with its capability for generating diverse electric potentials inside the ion trap that can open up the possibility for some interesting quantum simulations.