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Why are logical qubits needed before large-scale quantum processors?

Asked on Thursday, Nov 06, 2025

Logical qubits are essential for large-scale quantum processors because they enable error correction, which is crucial for maintaining coherence and fidelity in quantum computations. By encoding infor…

How do quantum circuits encode molecular Hamiltonians for VQE?

Asked on Wednesday, Nov 05, 2025

Encoding molecular Hamiltonians in quantum circuits for the Variational Quantum Eigensolver (VQE) involves translating the molecular electronic structure problem into a form suitable for quantum compu…

Why is cross-talk a major issue in superconducting qubits?

Asked on Tuesday, Nov 04, 2025

Cross-talk is a significant issue in superconducting qubits because it can lead to unintended interactions between qubits, which degrade the fidelity of quantum operations and increase error rates. Th…

How does Qiskit estimate error rates for quantum processors?

Asked on Monday, Nov 03, 2025

Qiskit estimates error rates for quantum processors by utilizing a combination of calibration routines and characterization protocols that measure the performance of qubits and gates. These methods ar…