Novel qudits could revolutionize quantum computing:
Some experts are now opting for qudits instead of qubits: These quantum states have more dimensions and could ...
spektrum.de/news/neuartige-qudits-koennten-quantencomputer-revolutionieren/2259188
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Key FactsQuantum Computing: Big Claims, Unclear Evidence
Jun 3, 2025 · Reading time: ~45 sec.
Summary created with AI assistance · Source: scientificamerican.com
Summary created with AI assistance · Source: scientificamerican.com
- Microsoft announced a topological quantum computer in February 2025, but a Nature peer-review note said the study had not definitively demonstrated Majorana zero modes.
- Google unveiled its 105-qubit Willow chip in December 2024, after which Mark Zuckerberg voiced doubts and quantum-computing stocks fell.
- Amazon announced the nine-qubit Ocelot chip at the end of February 2025, using a superconducting resonator and photon-controlled, error-tolerant cat qubits.
- No clear winner has emerged among the competing technical approaches, and scaling them to about one million qubits remains uncertain.
The Majorana 1 processor offers a clear path to fit a million qubits on a single chip that can fit in the palm of one’s hand.— Microsoft (from a press release about the Majorana-1 processor)
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