High-performance computer users in the market for a quantum annealing machine or looking for ways to get the most out of one they already have will benefit from a new, open-source software tool for evaluating these emerging platforms at the individual qubit level.
Scientists mapped the electronic states in an exotic superconductor. The maps point to the composition range necessary for topological superconductivity, a state that could enable more robust quantum computing.
Two new experiments have demonstrated the correlation between natural radiation levels and the duration of qubit coherence. If radiation cannot be mitigated, it will limit the coherence time of qubits to a few milliseconds.
The search is on to discover new states of matter, and possibly new ways of encoding, manipulating, and transporting information. One goal is to harness materials’ quantum properties for communications that go beyond what’s possible with conventional electronics. Topological insulators–materials that act mostly as insulators but carry electric current across their surface–provide some tantalizing possibilities. Scientists at Brookhaven Lab describe one such material that should be right just right for making qubits. But this material doesn’t obey the rules.
To use quantum computers on a large scale, we need to improve the technology at their heart – qubits. Qubits are the quantum version of conventional computers’ most basic form of information, bits. The DOE’s Office of Science is supporting research into developing the ingredients and recipes to build these challenging qubits.