Entanglement that builds up naturally during quantum evolution shields many-body dynamics from local noise, offering free error protection with no extra qubits or control.
A full hardware blueprint for a fault-tolerant photonic quantum computer built from quantum-dot photon sources, with error-correction cycles running in microseconds.
A simple 6-feature ridge regression trained on VQE-minus-Hartree-Fock energy gaps cuts quantum chemistry simulation errors by 3x to 640x, with no extra quantum computation.
Filtering noise from several qubit copies before error-correcting nearly doubles the surface code's error threshold and cuts logical errors 46-fold.
Coupling four fixed-frequency transmons to one shared coupler yields CNOT gates above 98% fidelity in all six directions and maps directly onto surface-code plaquettes.
Quantum computers with 50-100 noisy qubits will soon beat classical machines at some tasks, but they won't transform computing until gates get far more accurate.