All articles tagged with #coherence times
Physicists at ETH Zürich have developed the first fully mechanical qubit, using a piezoelectric disk on a sapphire base as a mechanical resonator, coupled with a superconducting qubit. This innovation addresses the short-lived nature of virtual qubits by providing longer coherence times, potentially improving quantum computing capabilities. The team plans to enhance these times further and test the qubits with quantum gates.
Scientists have used a terahertz scanning near-field optical microscope (SNOM) to detect flaws in nano Josephson Junctions (JJs), a key component in superconducting quantum computers. The terahertz SNOM microscope, developed at the U.S. Department of Energy's Ames National Laboratory, revealed a defective boundary in the nano JJ that disrupts conductivity and challenges the production of long coherence times necessary for quantum computation. The microscope's high-resolution imaging capabilities provide a non-destructive and contactless method for identifying effective boundaries in quantum circuit components. The research aims to improve the quality of quantum circuits and advance the understanding of qubits in quantum computing.
Researchers at the AQT at Berkeley Lab developed a blueprint for a novel quantum processor based on "fluxonium" qubits, which can outperform the most widely used superconducting qubits, offering a promising path toward fault-tolerant universal quantum computing. The team focused on the scalability and adaptability of the processor's main components, with a set of parameters that researchers can tune to increase the runtime and fidelity of quantum circuits. The proposed fluxonium blueprint provides a potential path towards building fluxonium processors with standard, practical procedures to deploy logic gates with varying frequencies.