Microsoft says its researchers have found evidence of an exotic phenomenon that’s key to its plans to build general-purpose quantum computers.
The phenomenon, known as a Majorana zero mode, is expected to smooth the path for topological quantum computing — the technological approach that’s favored by Microsoft’s Azure Quantum program.
Quantum computing is a weird enough concept by itself: In contrast with the rigid one-or-zero world of classical computing, quantum computing juggles quantum bits, or qubits, that can represent ones and zeroes simultaneously until the results are read out.
Scientists say the quantum approach can solve certain types of problems — for example, network optimization or simulations of molecular interactions — far more quickly than the classical approach. Microsoft Azure, Amazon Web Services and other cloud-based services are already using hybrid systems to bring some of the benefits of the quantum approach to applications ranging from drug development to traffic management.
At the same time, Microsoft and other companies are trying to build the hardware and software for “full-stack” quantum computing systems that can take on a far wider range of applications. Microsoft has chosen a particularly exotic technological strategy, which involves inducing quantum states on topological superconducting wires. To keep those quantum states stable, the wires would host Majorana zero modes localized at each end.