Researchers at MIT have made a development in quantum computing by developing a new technique to improve the performance of superconducting qubits. The team led by William Oliver and including researchers such as Rower and Ding has demonstrated a faster and more accurate way to control these qubits using commensurate pulses and synthetic circularly polarized light. This achievement is particularly important for low-frequency qubits like fluxonium, which are considered promising for quantum computing due to their higher coherence.
The work was funded by organizations including the US Army Research Office and the US Department of Energy and involved collaboration with MIT Lincoln Laboratory. The breakthrough has the potential to lead to more efficient and reliable quantum computing and could be a significant step towards realizing fault tolerant quantum computing. Companies like Google are also working on developing quantum computing technology and this research could have implications for their efforts as well.
The article discusses a breakthrough in quantum computing research, specifically in the development of high-fidelity gates for superconducting qubits. The researchers, led by Professor William D. Oliver, have demonstrated a new technique called “commensurate pulses” that can mitigate counter-rotating errors in low-frequency qubits, such as fluxonium.
The team used a combination of advanced control methods and an understanding of the underlying physics to achieve high-fidelity gates with fast operation times. They applied commensurate pulses, which are defined by timing constraints, to a single linear qubit drive, eliminating the need for circularly polarized microwaves that require two drives and extra calibration.
The results show that fluxonium, a type of superconducting qubit, can support both high coherence and fast gate operations, making it a promising candidate for quantum computing. The researchers achieved a gate fidelity of 99.95%, which is among the highest reported for any superconducting qubit.
The work has significant implications for the development of fault-tolerant quantum computing, as it establishes straightforward strategies for mitigating counter-rotating effects from strong drives in circuit quantum electrodynamics and other platforms. The researchers expect their findings to be helpful in realizing high-fidelity control for fault-tolerant quantum computing.
The research demonstrates that commensurate pulses can effectively mitigate counter-rotating errors in low-frequency qubits like fluxonium. The approach simplifies implementation by utilizing a single linear qubit drive instead of circularly polarized microwaves. Fluxonium shows promise for quantum computing due to its combination of high coherence and fast gate operations. Notably, the researchers achieved a gate fidelity of 99.95%, one of the highest reported for superconducting qubits. This advancement has significant implications for the realization of fault-tolerant quantum computing, highlighting the impact of integrating foundational principles from physics and electrical engineering.
External Link: Click Here For More
