Qubit Counts and Hardware: Leading players like IBM, Google, and Quantinuum have systems with qubit counts ranging from dozens to low hundreds. IBM’s 2023 roadmap showcased a 433-qubit processor (Osprey), with plans for a 1,121-qubit system (Condor) in 2025. Google’s Sycamore processor hit 70 qubits in 2023, and IonQ’s trapped-ion systems are pushing toward 64+ high-fidelity qubits. These numbers sound impressive, but raw qubit count isn’t the whole story—coherence times (how long qubits hold their state) and error rates are critical bottlenecks.
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