Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
Andreas Wallraff,David Schuster,Alexandre Blais,Luigi Frunzio,Ren-Shou Huang,Ren-Shou Huang,Johannes Majer,Sushant Kumar,Steven Girvin,Robert Schoelkopf +9 more
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TLDR
It is shown that the strong coupling regime can be attained in a solid-state system, and the concept of circuit quantum electrodynamics opens many new possibilities for studying the strong interaction of light and matter.Abstract:
The interaction of matter and light is one of the fundamental processes occurring in nature, and its most elementary form is realized when a single atom interacts with a single photon. Reaching this regime has been a major focus of research in atomic physics and quantum optics1 for several decades and has generated the field of cavity quantum electrodynamics2,3. Here we perform an experiment in which a superconducting two-level system, playing the role of an artificial atom, is coupled to an on-chip cavity consisting of a superconducting transmission line resonator. We show that the strong coupling regime can be attained in a solid-state system, and we experimentally observe the coherent interaction of a superconducting two-level system with a single microwave photon. The concept of circuit quantum electrodynamics opens many new possibilities for studying the strong interaction of light and matter. This system can also be exploited for quantum information processing and quantum communication and may lead to new approaches for single photon generation and detection.read more
Citations
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Staying positive: going beyond Lindblad with perturbative master equations
TL;DR: The perturbative master equation (Bloch-Redfield) is extensively used to study dissipative quantum mechanics, particularly for qubits, despite the 25 year old criticism that it violates positivity (generating negative probabilities).
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Heat rectification via a superconducting artificial atom
Jorden Senior,A. R. Gubaydullin,Bayan Karimi,Joonas T. Peltonen,Joachim Ankerhold,Jukka P. Pekola +5 more
TL;DR: In this paper, a mesoscopic thin-film metal island is constructed for superconducting circuits, where the transmon-type quantum bit can be coupled to two super-conducting resonators at different frequencies, each resonator terminated by a metal island.
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All-Microwave Control and Dispersive Readout of Gate-Defined Quantum Dot Qubits in Circuit Quantum Electrodynamics
Pasquale Scarlino,D. J. van Woerkom,Anna Stockklauser,Jonne V. Koski,Michele C. Collodo,Simone Gasparinetti,Christian Reichl,Werner Wegscheider,Thomas Ihn,Klaus Ensslin,Andreas Wallraff +10 more
TL;DR: The dynamics and the coherence properties of a GaAs/AlGaAs double quantum dot charge qubit strongly coupled to a frequency-tunable high-impedance resonator are studied.
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Observation of Collective Coupling between an Engineered Ensemble of Macroscopic Artificial Atoms and a Superconducting Resonator.
Kosuke Kakuyanagi,Yuichiro Matsuzaki,Corentin Deprez,Hiraku Toida,Kouichi Semba,Hiroshi Yamaguchi,William J. Munro,Shiro Saito +7 more
TL;DR: This work demonstrates the coherent coupling between a microwave resonator and a macroscopic ensemble composed of several thousand superconducting flux qubits, where a large dispersive frequency shift in the spectrum of 250 MHz is observed.
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A qubit strongly coupled to a resonant cavity: asymmetry of the spontaneous emission spectrum beyond the rotating wave approximation
TL;DR: In this article, the authors investigated the spontaneous emission spectrum of a qubit in a lossy resonant cavity and showed that the asymmetry of the two SE peaks changes as the qubit-cavity coupling increases.
References
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Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation
Alexandre Blais,Ren-Shou Huang,Ren-Shou Huang,Andreas Wallraff,Steven Girvin,Robert Schoelkopf +5 more
TL;DR: In this paper, a realizable architecture using one-dimensional transmission line resonators was proposed to reach the strong coupling limit of cavity quantum electrodynamics in superconducting electrical circuits.
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Quantum dynamics of single trapped ions
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