Circuit quantum electrodynamics

Blais, Alexandre; Grimsmo, Arne L.; Girvin, S. M.; Wallraff, Andreas

doi:10.1103/revmodphys.93.025005

Cited by 901 publications

(631 citation statements)

References 506 publications

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“…All devices in this category are relatively simple circuits, and display genuine quantum properties such as discrete energy spectra and quantum-coherent time evolution. Coupling superconducting qubits to external electromagnetic fields enables the realization of gate operations as well as quantum-state readout using the framework of circuit quantum electrodynamics (circuit QED) [3,4,26].…”

Section: Introductionmentioning

confidence: 99%

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Scqubits: a Python package for superconducting qubits

Groszkowski

Koch

2021

Quantum

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scqubits is an open-source Python package for simulating and analyzing superconducting circuits. It provides convenient routines to obtain energy spectra of common superconducting qubits, such as the transmon, fluxonium, flux, cos(2ϕ) and the 0-π qubit. scqubits also features a number of options for visualizing the computed spectral data, including plots of energy levels as a function of external parameters, display of matrix elements of various operators as well as means to easily plot qubit wavefunctions. Many of these tools are not limited to single qubits, but extend to composite Hilbert spaces consisting of coupled superconducting qubits and harmonic (or weakly anharmonic) modes. The library provides an extensive suite of methods for estimating qubit coherence times due to a variety of commonly considered noise channels. While all functionality of scqubits can be accessed programatically, the package also implements GUI-like widgets that, with a few clicks can help users both create relevant Python objects, as well as explore their properties through various plots. When applicable, the library harnesses the computing power of multiple cores via multiprocessing. scqubits further exposes a direct interface to the Quantum Toolbox in Python (QuTiP) package, allowing the user to efficiently leverage QuTiP's proven capabilities for simulating time evolution.

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Section: Introductionmentioning

confidence: 99%

“…Next, in Sec. 4 we present how scqubits lets users perform parameter sweeps and easily explore how properties of a composite system vary as circuit parameters or control fields change. In Sec.…”

Section: Introductionmentioning

confidence: 99%

Scqubits: a Python package for superconducting qubits

Groszkowski

Koch

2021

Quantum

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“…Precision control and measurement of quantum systems and devices [1,2] have undergone great progress during the recent years. Important applications of this research field in both quantum computing [3][4][5] and quantum heat engines [6][7][8][9] call for in-depth studies of the accuracy of the corresponding theoretical models, especially for open quantum systems, where typically many approximations are utilized to render the problem computationally solvable [10][11][12][13][14][15][16][17][18][19]. Most typically, Markovian master equations (MEs) are used, having been historically proven to be simple and effective tools in many scenarios where open quantum systems appear such as in the field of quantum optics [20].…”

Section: General Introductionmentioning

confidence: 99%

Validity of Born-Markov master equations for single- and two-qubit systems

et al. 2021

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“…Dissipation plays essential roles in the non-equilibrium dynamics of quantum matters. There has been rapid growth of research interests in the dissipative quantum dynamics as it is relevant to macroscopic quantum tunneling [1], low-energy nuclear reactions [2][3][4], dynamics of cold atoms [5][6][7], and quantum information processings [8,9]. Milestones in this research field is the Caldeira-Leggett model [1] and the Lindblad type equations [10,11], where dissipation in the quantum system originates from the coupling of the system with the environment.…”

Section: Introductionmentioning

confidence: 99%

Equivalence of Dissipative and Dissipationless Dynamics of Interacting Quantum Systems With Its Application to the Unitary Fermi Gas

Tokieda

Endo

2021

Front. Phys.

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We analytically study quantum dissipative dynamics described by the Caldirola-Kanai model with inter-particle interactions. We have found that the dissipative quantum dynamics of the Caldirola-Kanai model can be exactly mapped to a dissipationless quantum dynamics under a negative external harmonic potential, even when the particles are strongly interacting. In particular, we show that the mapping is valid for the unitary Fermi gas, which is relevant for cold atoms and nuclear matters.

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Circuit quantum electrodynamics

Cited by 901 publications

References 506 publications

Scqubits: a Python package for superconducting qubits

Scqubits: a Python package for superconducting qubits

Validity of Born-Markov master equations for single- and two-qubit systems

Equivalence of Dissipative and Dissipationless Dynamics of Interacting Quantum Systems With Its Application to the Unitary Fermi Gas

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