Publication record · 18.cifr/2021.blais.circuit-qed
18.cifr/2021.blais.circuit-qedQuantum information processing and quantum optics with superconducting circuits have seen rapid development in the past two decades. The underlying theory, circuit quantum electrodynamics (circuit QED), describes the interaction of artificial atoms (qubits) with microwave photons in superconducting resonators. This review presents the theoretical framework of circuit QED from first principles, covering the Jaynes-Cummings Hamiltonian, dispersive approximation, input-output theory, and multi-qubit systems.
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Authors identify multi-mode bosonic error correction and scaling to large qubit arrays with on-chip control as open challenges. Materials decoherence mechanisms and real-time feedback at scale remain active research frontiers that the current theory does not fully address.