•The Good Signal
Stanford just built an 8-qubit quantum RAM
On 8 September 2026, Nature Physics published a Stanford–SLAC-led experiment realizing an eight-bit cascaded random-access quantum memory on superconducting circuits. One transmon classically addresses seven storage modes through a buffer; average access infidelity is less than 1.5% per mode. A size-7 full memory cycle stayed under the ~17% surface-code depolarization threshold the paper cites. This is a lab memory module, not a fault-tolerant product.
