Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

2004/07/13 by Andreas Wallraff, A. Wallraff, David Schuster +14 · 99 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.supr-con #quant-ph

paper · pdf · doi:10.1038/nature02851

published as Nature (London) 431, 162-167 (2004) · 8 pages, 4 figures, accepted for publication in Nature, embargo does apply, version with high resolution figures available at: http://www.eng.yale.edu/rslab/Andreas/content/science/PubsPapers.html

arxiv created 2004/07/13 · crossref issued 2004/09/01 · crossref published 2004/09/01 · crossref published-print 2004/09/01 · openalex publication_date 2004/09/01 · crossref created 2004/09/08 · arxiv updated 2009/12/01 · crossref deposited 2023/05/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03 · crossref indexed 2026/08/03

Abstract

Under appropriate conditions, superconducting electronic circuits behave quantum mechanically, with properties that can be designed and controlled at will. We have realized an experiment in which a superconducting two-level system, playing the role of an artificial atom, is strongly coupled to a single photon stored in an on-chip cavity. We show that the atom-photon coupling in this circuit can be made strong enough for coherent effects to dominate over dissipation, even in a solid state environment. This new regime of matter light interaction in a circuit can be exploited for quantum information processing and quantum communication. It may also lead to new approaches for single photon generation and detection.

Citations

• Cavity quantum electrodynamics in superconducting circuits: Susceptibility at elevated temperatures
• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Coherent Quantum Dynamics of a Superconducting Flux Qubit
• Demonstration of conditional gate operation using superconducting charge qubits
• Manipulating quantum entanglement with atoms and photons in a cavity
• Quantum Coherence with a Single Cooper Pair
• ac Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Quantum-state engineering with Josephson-junction devices
• Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation
• Entangled states in a Josephson charge qubit coupled to a superconducting resonator

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• Andreas Wallraff [wikipedia]