Description
Speaker:
Prof Winfried Hensinger
University of Sussex
Abstract:
Microwave technology poses a significant opportunity to scale trapped ion quantum computers to system sizes that support utility scale quantum computation within the fault-tolerant regime. I will present progress on making microwave quantum gates faster with errors much below the fault-tolerant threshold by creating much larger magnetic field gradients. We have successfully developed a new generation of ion microchips capable of generating large magnetic field gradients in excess of 100 T/m. I will show progress on realizing high-fidelity gates with these new chips. We have invented a new approach to generate magnetic field gradient enabling orders of magnitude lower noise, while reducing expected power dissipation for the operation within utility scale-quantum computers and I will report on the first demonstration of this new approach. I will discuss progress in the development of trapped-ion quantum microchips including the integration of atomic ovens into the microchips and materials studies enabling much deeper trap depths in such chips.
As an application of our quantum computing research, I will discuss the realisation of a new electric field quantum sensor with unprecedented electric field sensitivities for the measurement of both DC signals and AC signals across a frequency range of sub-Hz to ∼ 500 kHz.