No manual tuning needed, Qualibrate calibrates qubits from cold start

At Fermilab’s SQMS Center, researchers have achieved the break-even point for bosonic QEC, where an encoded logical qubit outlives its best physical qubit, and are now focused on extending control to match the coherence offered by superconducting radio-frequency cavities, Quantum Machines says. Bringing up a single qubit-cavity pair historically required twenty distinct measurements and a day or more of expert time, a bottleneck to scaling bosonic quantum error correction devices that encode information in the multiple quantum states of a harmonic oscillator. Leonardo Bove, at SQMS, developed Qualibrate, an automated…