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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Experimental Realization of a Protected Superconducting Circuit Derived from the 0 – π Qubit
Andras Gyenis,Pranav Mundada,Agustin Di Paolo,Thomas Hazard,Xinyuan You,David Schuster,Jens Koch,Alexandre Blais,Alexandre Blais,Andrew Houck +9 more
TL;DR: In this paper, a promising building block for a fault-tolerant quantum processor is demonstrated: Exponential protection against relaxation and first-order protection against dephasing is achieved in a superconducting qubit.
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Strongly correlated photons generated by coupling a three- or four-level system to a waveguide
TL;DR: In this article, a three-level or four-level system for the atom was proposed to generate strongly correlated photons by coupling an atom to photonic quantum fields in a one-dimensional waveguide.
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Probing tiny motions of nanomechanical resonators: classical or quantum mechanical?
TL;DR: The motion of the NAMR, including if it is quantum mechanical or not, could be probed by detecting the voltage-fluctuation spectrum of the TLR, which is indirectly coupled to theNAMR via a controllable Josephson qubit acting as a quantum transducer.
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Manipulation and coherence of ultra-cold atoms on a superconducting atom chip
Simon Bernon,H. Hattermann,Daniel Bothner,M. Knufinke,P. Weiss,Florian Jessen,Daniel Cano,M. Kemmler,Reinhold Kleiner,Dieter Koelle,József Fortágh +10 more
TL;DR: The coherence of superposition states of (87)Rb atoms magnetically trapped on a superconducting atom chip are characterized and it is shown that large ensembles of a million of thermal atoms below 350 nK temperature and pure Bose-Einstein condensates with 3.5 × 10(5) atoms can be prepared and manipulated at thesuperconducting interface.
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Cavity QED with semiconductor nanocrystals
TL;DR: In this paper, a strongly coupled cavity quantum electrodynamic (CQED) system consisting of a CdSe nanocrystal coupled to a single photon mode of a polymer microsphere is reported.
References
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Quantum Computation and Quantum Information
TL;DR: In this article, the quantum Fourier transform and its application in quantum information theory is discussed, and distance measures for quantum information are defined. And quantum error-correction and entropy and information are discussed.
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TL;DR: In information processing, as in physics, the classical world view provides an incomplete approximation to an underlying quantum reality that can be harnessed to break codes, create unbreakable codes, and speed up otherwise intractable computations.
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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
TL;DR: Theoretical and experimental work on radio-frequency (Paul) traps is reviewed in this paper, with a focus on ions trapped in radiofrequency traps, which are ideal for quantum-optical and quantum-dynamical studies under well controlled conditions.