Quantum News
Reported and summarised for readers who follow the field closely. Filter by topic or search the archive.
Quantum phase estimation is a foundational algorithmic technique for extracting eigenvalue information from quantum systems, but its practical value depends on demanding state preparation, controlled operations and measurement precision.
Quantum error mitigation uses statistical and mathematical techniques to estimate cleaner results from noisy quantum processors without fully correcting errors during computation.
Many leading quantum processors operate near absolute zero, making refrigeration, wiring and heat management central engineering challenges rather than peripheral infrastructure.
The logical error rate keeps falling as the code distance grows — the clearest sign yet that adding qubits now buys reliability instead of noise.
A new lattice-surgery scheduler squeezes routing overhead out of fault-tolerant circuits, and it ships under a permissive license.
Moving ions between zones used to cost coherence. A revised trap geometry makes transport nearly free.
Not a dedicated dark-fibre link — the demonstration ran alongside ordinary classical traffic on deployed infrastructure.
Draft guidance would require cryptographic inventories from vendors bidding on public contracts.
A shift in junction fabrication tightens the frequency spread that has plagued multi-chip modules.
A tensor-network method reproduces sampling results that were argued to be out of classical reach.
Room-temperature sensors let magnetoencephalography move with the patient instead of the other way around.
Vendors publish incomparable numbers. A working group wants one protocol everyone can run.
