Open AccessJournal Article
Light-matter decoupling and $A^2$ term detection in superconducting circuits
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In this paper, the spontaneous emission of a qubit interacting with a one-dimensional waveguide through a realistic minimal-coupling interaction was studied, and it was shown that the diamagnetic term $A^2$ leads to an effective decoupling of a single qubit from the electromagnetic field.Abstract:
We study the spontaneous emission of a qubit interacting with a one-dimensional waveguide through a realistic minimal-coupling interaction. We show that the diamagnetic term $A^2$ leads to an effective decoupling of a single qubit from the electromagnetic field. This effects is observable at any range of qubit-photon couplings. For this we study a setup consisting of a transmon that is suspended over a transmission line. We prove that the relative strength of the $A^2$ term is controlled with the qubit-line separation and show that, as a consequence, the spontaneous emission rate of the suspended transmon onto the line can increase with such separation, instead of decreasing.read more
Citations
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a Quantum-Mechanical Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals.
TL;DR: In this article, it was shown that the ordinary semiclassical theory of the absorption of light by exciton states is not completely satisfactory (in contrast to the case of absorption due to interband transitions).
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Microwave photonics with superconducting quantum circuits
TL;DR: In the past 20 years, impressive progress has been made both experimentally and theoretically in superconducting quantum circuits, which provide a platform for manipulating microwave photons as mentioned in this paper, and many higher-order effects, unusual and less familiar in traditional cavity quantum electrodynamics with natural atoms, have been experimentally observed.
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Open quantum systems with local and collective incoherent processes: Efficient numerical simulations using permutational invariance
TL;DR: The Permutational-Invariant Quantum Solver (PIQS) as mentioned in this paper is an open-source library in python, which can be used to study several important physical phenomena in the presence of local incoherent processes, in which each degree of freedom couples to its own reservoir.
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Ab initio nonrelativistic quantum electrodynamics: Bridging quantum chemistry and quantum optics from weak to strong coupling
TL;DR: In this article, the Born-Huang expansion was applied to the full nucleus-electron-photon Hamiltonian of nonrelativistic quantum electrodynamics (QED) in the long-wavelength approximation.
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Light–matter interactions with photonic quasiparticles
Nicholas Rivera,Ido Kaminer +1 more
TL;DR: In this paper, the authors focus on the theoretical and experimental developments in realizing new light-matter interactions with photonic quasiparticles, such as room-temperature strong coupling, ultrafast ‘forbidden’ transitions in atoms and new applications of the Cherenkov effect.
References
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Journal ArticleDOI
Dynamics of the dissipative two-state system
Anthony J. Leggett,Sudip Chakravarty,Alan T. Dorsey,Matthew P. A. Fisher,Anupam Garg,Wilhelm Zwerger +5 more
TL;DR: In this article, a functional-integral approach to the dynamics of a two-state system coupled to a dissipative environment is presented, and an exact and general prescription for the reduction, under appropriate circumstances, of the problem of a system tunneling between two wells in the presence of dissipative environments to the spin-boson problem is given.
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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
TL;DR: 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.
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Charge-insensitive qubit design derived from the Cooper pair box
Jens Koch,Terri M. Yu,Jay M. Gambetta,Andrew Houck,David Schuster,Johannes Majer,Alexandre Blais,Michel Devoret,Steven Girvin,Robert Schoelkopf +9 more
TL;DR: In this paper, the transmon was proposed to operate in a regime of significantly increased ratio of Josephson energy and charging energy, while maintaining sufficient anharmonicity for selective qubit control.
Journal ArticleDOI
Superconducting circuits for quantum information: an outlook.
TL;DR: For the first time, physicists will have to master quantum error correction to design and operate complex active systems that are dissipative in nature, yet remain coherent indefinitely.
a Quantum-Mechanical Theory of the Contribution of Excitons to the Complex Dielectric Constant of Crystals.
TL;DR: In this article, it was shown that the ordinary semiclassical theory of the absorption of light by exciton states is not completely satisfactory (in contrast to the case of absorption due to interband transitions).