Coupling superconducting qubits via a cavity bus

@article{Majer2007CouplingSQ,
  title={Coupling superconducting qubits via a cavity bus},
  author={Johannes Majer and Jerry M. Chow and Jay M. Gambetta and Jens Koch and Blake R. Johnson and J. A. Schreier and Luigi Frunzio and David I. Schuster and Andrew A. Houck and Andreas Wallraff and Alexandre Blais and Michel H. Devoret and Steven M. Girvin and Robert J. Schoelkopf},
  journal={Nature},
  year={2007},
  volume={449},
  pages={443-447}
}
Superconducting circuits are promising candidates for constructing quantum bits (qubits) in a quantum computer; single-qubit operations are now routine, and several examples of two-qubit interactions and gates have been demonstrated. These experiments show that two nearby qubits can be readily coupled with local interactions. Performing gate operations between an arbitrary pair of distant qubits is highly desirable for any quantum computer architecture, but has not yet been demonstrated. An… 
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References

SHOWING 1-10 OF 41 REFERENCES
Demonstration of conditional gate operation using superconducting charge qubits
TLDR
This work demonstrates conditional gate operation using a pair of coupled superconducting charge qubits using a pulse technique and shows that their amplitude can be transformed by controlled-NOT (C-NOT) gate operation, although the phase evolution during the gate operation remains to be clarified.
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.
Quantum information processing with circuit quantum electrodynamics
We theoretically study single and two-qubit dynamics in the circuit QED architecture. We focus on the current experimental design [Wallraff et al., Nature (London) 431, 162 (2004); Schuster et al.,
Resolving photon number states in a superconducting circuit
TLDR
A circuit QED experiment is reported in the strong dispersive limit, a new regime where a single photon has a large effect on the qubit without ever being absorbed, the basis of a logic bus for a quantum computer.
Quantum Coherent Tunable Coupling of Superconducting Qubits
TLDR
This work reports on the time-domain tunable coupling of optimally biased superconducting flux qubits by modulating the nonlinear inductance of an additional coupling element and parametrically induced a two-qubit transition that was otherwise forbidden.
Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
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.
Controllable coupling of superconducting flux qubits.
TLDR
It is realized controllable coupling between two three-junction flux qubits by inserting an additional coupler loop between them, containing three Josephson junctions, providing strong qubit-coupler interaction.
Entangled Macroscopic Quantum States in Two Superconducting Qubits
TLDR
Microwave spectroscopy in the 4 to 6 gigahertzrange at 20 millikelvin reveals energy levels that agree well with theoretical results for entangled states.
Implementing Qubits with Superconducting Integrated Circuits
TLDR
It is discussed in this review how qubit decoherence is affected by the intrinsic noise of the junction and what can be done to improve it.
Charge-insensitive qubit design derived from the Cooper pair box
Short dephasing times pose one of the main challenges in realizing a quantum computer. Different approaches have been devised to cure this problem for superconducting qubits, a prime example being
...
...