a team of Harvard scientists has succeeded for the first time in trapping molecules to perform quantum operations. This feat was accomplished by using ultra-cold polar molecules as qubits, or the fundamental units of information that power the technology. The findings, recently published in the journal Nature, open new realms of possibility for harnessing the complexity of molecular structures for future applications.

In new work, using a superconducting qubit called fluxonium, MIT researchers in the Department of Physics, the Research Laboratory of Electronics (RLE), and the Department of Electrical Engineering and Computer Science (EECS) developed two new control techniques to achieve a world-record single-qubit fidelity of 99.998 percent. This result complements then-MIT researcher Leon Ding’s demonstration last year of a 99.92 percent two-qubit gate fidelity.

Infleqtion, the world’s leading quantum information company, today announced the world’s first demonstration of a materials science application powered by logical qubits. Leveraging the NVIDIA CUDA-Q platform, the demonstration, conducted in collaboration with the University of Chicago and the University of Wisconsin, achieved a 6x boost in application-level computational accuracy. This marks a transformative step forward in quantum computing and showcasing the technology’s potential to tackle otherwise intractable computational challenges, such as the design of next-generation materials.

Alice & Bob, a global frontrunner in the race for fault-tolerant quantum computing, has unveiled its white paper and five-year roadmap. The white paper outlines a clear path to achieving useful quantum computing through Alice & Bob’s cat qubit technology, which promises to deliver high-fidelity logical qubits while using significantly fewer hardware and energy resources compared to alternative approaches.

In September Microsoft announced their collaboration with Atom Computing to build the world’s most powerful quantum machine, and create a unique commercial offering which is available for order today. Just two months after this announcement they are excited to share the news that together they have now entangled 24 logical qubits, setting a new world record. They also jointly demonstrated error detection, correction, and computation with 28 logical qubits on Atom’s flagship systems.

In an article published September 23, 2024 in the journal Physical Review A, JQI researchers proposed a way to use the physics of superconducting junctions to let each function as more than one qubit. They also outlined a method to use the new qubit design in quantum simulations. While these proposed qubits might not immediately replace their more established peers, they illustrate the rich variety of quantum physics that remains to be explored and harnessed in the field.

In research led by Ingvild Hansen, a PhD student at UNSW and Diraq and supervised by Henry Yang, the work detailed how can drive qubits simultaneously and perform two-qubit logic using the same global driving microwave field.

Scientists from the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have shown that a type of qubit whose architecture is more amenable to mass production can perform comparably to qubits currently dominating the field. With a series of mathematical analyses, the scientists have provided a roadmap for simpler qubit fabrication that enables robust and reliable manufacturing of these quantum computer building blocks.

IonQ, a leader in the quantum computing industry, recently announced that it has surpassed “three 9’s” (99.9%) two-qubit gate fidelity on one of its next-generation barium development platforms. T

Oxford Ionics, a leader in trapped-ion quantum computing, today announced it has set a new record in quantum state preparation and measurement (SPAM). The results, experimentally implemented at the University of Oxford, demonstrate the highest recorded SPAM fidelities of any quantum computing platform at 99.9993%.