Cambridge Quantum said its quantum software development kit, known as TKET, is fully open sourced. The SDK is designed to be hardware agnostic. The company, which is merging with Honeywell Quantum, said its plan was to completely open source TKET by the end of 2021. Ilyas Khan, CEO of Cambridge Quantum, said the community of developers for TKET has surged since announcing that it will be completely open sourced. Software platforms for quantum computing have become hot commodities.
Quantum computing technology is advancing rapidly and is on track to solve extraordinarily complex business problems through enhanced optimization, machine learning, and simulation. Make no mistake, the technology promises to be one of the most disruptive of all time. In fact, I believe quantum computing will hand a significant competitive advantage to the companies that can successfully leverage its potential to transform their business and their industries. While quantum technologies are still maturing, companies are already preparing, with spending on quantum computing projected to surge from $260 million in 2020 to $9.1 billion by 2030, according to research from Tractica. Companies are pursuing the promise of quantum aggressively, as evidenced by the recently announced combination of Honeywell Quantum Solutions and Cambridge Quantum Computing.
IBM has successfully built and tested two new universal quantum computing processors. The first one is aimed at developers, researchers and programmers. Many of these have been working with the APIs IBM released for the IBM Quantum Experience in March. They will now be able to move from testing their applications on a five quantum computing (qubit) processor to one with 16 qubits. This is a significant jump forward and it will be interesting to see if this leads to an acceleration in academic papers on the benefits from quantum computing.
The processing of quantum information is reliant on the encoding and manipulation of quantum states of a qubit. Superconducting circuits are the most advanced platform at present, but there is an issue with cross-talk between the qubits and the challenge of error correction as the systems are scaled up. Another approach being pursued is a modular platform in which the qubits are spatially separated. Daiss et al. demonstrate the operation of a quantum gate in which one qubit conditionally controls the state of another qubit spatially separated by 60 meters (see the Perspective by Hunger). Because the approach is platform independent, it could be extended from the demonstrated neutral atoms to ions, impurity vacancy centers, or even a combination of these qubits. Science , this issue p. ; see also p.  The big challenge in quantum computing is to realize scalable multi-qubit systems with cross-talk–free addressability and efficient coupling of arbitrarily selected qubits. Quantum networks promise a solution by integrating smaller qubit modules to a larger computing cluster. Such a distributed architecture, however, requires the capability to execute quantum-logic gates between distant qubits. Here we experimentally realize such a gate over a distance of 60 meters. We employ an ancillary photon that we successively reflect from two remote qubit modules, followed by a heralding photon detection, which triggers a final qubit rotation. We use the gate for remote entanglement creation of all four Bell states. Our nonlocal quantum-logic gate could be extended both to multiple qubits and many modules for a tailor-made multi-qubit computing register. : /lookup/doi/10.1126/science.abe3150 : /lookup/doi/10.1126/science.abg1536