Implementation of a quantum metamaterial using superconducting qubits.

@article{Macha2014ImplementationOA,
  title={Implementation of a quantum metamaterial using superconducting qubits.},
  author={Pascal Macha and Gregor Oelsner and Jan-Michael Reiner and Michael Marthaler and Stephan Andr{\'e} and Gerd Sch{\"o}n and Uwe H{\"u}bner and Hans-Georg Meyer and E. Il'ichev and Alexey V. Ustinov},
  journal={Nature communications},
  year={2014},
  volume={5},
  pages={
          5146
        }
}
The key issue for the implementation of a metamaterial is to demonstrate the existence of collective modes corresponding to coherent oscillations of the meta-atoms. Atoms of natural materials interact with electromagnetic fields as quantum two-level systems. Artificial quantum two-level systems can be made, for example, using superconducting nonlinear resonators cooled down to their ground state. Here we perform an experiment in which 20 of these quantum meta-atoms, so-called flux qubits, are… 
Magnetically induced transparency of a quantum metamaterial composed of twin flux qubits
TLDR
It is demonstrated that in a broad frequency range the transmission coefficient through the metamaterial periodically depends on externally applied magnetic field and suppression of the transmission is achieved through field-induced transitions.
Waveguide bandgap engineering with an array of superconducting qubits
Waveguide quantum electrodynamics offers a wide range of possibilities to effectively engineer interactions between artificial atoms via a one-dimensional open waveguide. While these interactions
Quantum synchronization in disordered superconducting metamaterials
I report a theoretical study of collective coherent quantum-mechanical oscillations in disordered superconducting quantum metamaterials (SQMs), i.e. artificial arrays of interacting qubits
Role of qubit-cavity entanglement for switching dynamics of quantum interfaces in superconductor metamaterials
We study quantum effects of strong driving field applied to dissipative hybrid qubit-cavity system which are relevant for a realization of quantum gates in superconducting quantum metamaterials. We
Superradiance with an ensemble of superconducting flux qubits
Superconducting flux qubits are a promising candidate for realizing quantum information processing and quantum simulations. Such devices behave like artificial atoms, with the advantage that one can
Qubit lattice coherence induced by electromagnetic pulses in superconducting metamaterials
TLDR
It is demonstrated that induced qubit lattice coherence as well as two remarkable quantum coherent optical phenomena, i.e., self-induced transparency and Dicke-type superradiance, may occur during light-pulse propagation in quantum metamaterials comprising superconducting charge qubits.
Superconducting Qubit Systems as a Platform for Studying Effects of Nonstationary Electrodynamics in a Cavity
It has been shown that superconducting qubit systems, having high tunability, can be used as a platform for the experimental study of various effects of nonstationary quantum electrodynamics in a
2 3 O ct 2 01 6 Quantum synchronization in disordered superconducting metamaterials
I report a theoretical study of collective coherent quantum-mechanical oscillations in disordered superconducting quantum metamaterials (SQMs), i.e artificially fabricated arrays of interacting
Ultrastrong-coupling phenomena beyond the Dicke model
We study effective light-matter interactions in a circuit QED system consisting of a single $LC$ resonator, which is coupled symmetrically to multiple superconducting qubits. Starting from a minimal
...
...

References

SHOWING 1-10 OF 32 REFERENCES
Resonance Fluorescence of a Single Artificial Atom
TLDR
The behavior of the artificial atom, a superconducting macroscopic two-level system, is in a quantitative agreement with the predictions of quantum optics for a pointlike scatterer interacting with the electromagnetic field in one-dimensional open space.
Quantum metamaterials: Electromagnetic waves in Josephson qubit lines
We consider the propagation of a classical electromagnetic wave through a transmission line, formed by identical superconducting charge qubits inside a superconducting resonator. Since the qubits can
Superconducting Quantum Metamaterials
Quantum metamaterials is a concept bridging the fields of conventional metamaterials and quantum processing in solid state. These are artificial media comprised of quantum coherent, specifically
Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation
We propose a realizable architecture using one-dimensional transmission line resonators to reach the strong-coupling limit of cavity quantum electrodynamics in superconducting electrical circuits.
Coupling superconducting qubits via a cavity bus
TLDR
These experiments show that two nearby qubits can be readily coupled with local interactions, and show the implementation of a quantum bus, using microwave photons confined in a transmission line cavity, to couple two superconducting qubits on opposite sides of a chip.
Dressed collective qubit states and the Tavis-Cummings model in circuit QED.
We present an ideal realization of the Tavis-Cummings model in the absence of atom number and coupling fluctuations by embedding a discrete number of fully controllable superconducting qubits at
Excitation spectrum for an inhomogeneously dipole-field-coupled superconducting qubit chain
When a chain of superconducting qubits couples to a coplanar resonator in a cavity, each of its N qubits (equally-spaced with distance l) experiences a different dipole-field coupling strength due to
Superconducting persistent-current qubit
We present the design of a superconducting qubit that has circulating currents of opposite sign as its two states. The circuit consists of three nanoscale aluminum Josephson junctions connected in a
Josephson persistent-current qubit
TLDR
A qubit was designed that can be fabricated with conventional electron beam lithography and is suited for integration into a large quantum computer, allowing controlled transfer between qubits of the flux that is generated by the persistent currents, leading to entanglement of qubit information.
Superconducting quantum bits
Superconducting circuits are macroscopic in size but have generic quantum properties such as quantized energy levels, superposition of states, and entanglement, all of which are more commonly
...
...