A key challenge on the road towards a functional quantum computer is to integrate the individually demonstrated components into a functional and scalable device. I have pioneered the realization of fully chip-integrated quantum gates with trapped ions and have recently demonstrated a high-fidelity self-contained computation register that is both resource-efficient and robust to external disturbances. By extending this register with complementary storage, a universal quantum core can be realized.
To implement universal quantum computation, trapped ions presently provide the longest coherence times and best quantum gates. For useful quantum hardware, all operations need to be implemented in a micro-integrated, scalable device. Present mainstream setups implement quantum gates using laser systems. I have pioneered the use of fully chip-inegrated quantum gates based on embedded microwave “coils”, replacing the complex external laser systems by a tailored scalable chip structure with a single electrical input to implement quantum gates. Most recently, we have shown how amplitude pulse shaping makes these gates robust to external disturbances while optimizing the resource use. This elementary register is the basis for the design of a 50-qubit chip, which my group is currently finalizing as the core component of the QVLS-Q1 machine, and will be implemented in our patented multi-layer microfabrication line. It can be extended to implement a multi-core processor architecture.
Tags: Quantum Computing trapped Ions, Quantum Core