Quantum computing with an electron spin ensemble.

@article{Wesenberg2009QuantumCW,
  title={Quantum computing with an electron spin ensemble.},
  author={Janus H. Wesenberg and Arzhang Ardavan and G. Andrew D. Briggs and John J. L. Morton and Robert J. Schoelkopf and David I. Schuster and Klaus M{\o}lmer},
  journal={Physical review letters},
  year={2009},
  volume={103 7},
  pages={
          070502
        }
}
We propose to encode a register of quantum bits in different collective electron spin wave excitations in a solid medium. Coupling to spins is enabled by locating them in the vicinity of a superconducting transmission line cavity, and making use of their strong collective coupling to the quantized radiation field. The transformation between different spin waves is achieved by applying gradient magnetic fields across the sample, while a Cooper pair box, resonant with the cavity field, may be… Expand
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References

SHOWING 1-10 OF 78 REFERENCES
Holographic quantum computing.
We propose to use a single mesoscopic ensemble of trapped polar molecules for quantum computing. A "holographic quantum register" with hundreds of qubits is encoded in collective excitations withExpand
Quantum computing with a single molecular ensemble and a Cooper pair box
We propose to encode quantum information in rotational excitations in a molecular ensemble. Using a stripline cavity field for quantum-state transfer between the molecular ensemble and aExpand
Quantum computing with collective ensembles of multilevel systems.
We propose a new physical approach for encoding and processing of quantum information in ensembles of multilevel quantum systems, where the different bits are not carried by individual particles butExpand
Hybrid quantum processors: molecular ensembles as quantum memory for solid state circuits.
TLDR
It is shown that, for convenient trap-surface distances of a few microm, strong coupling between the cavity and ensemble qubit can be achieved and coherence properties of molecular ensemble quantum bits are investigated. Expand
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. Expand
Approaching unit visibility for control of a superconducting qubit with dispersive readout.
In a Rabi oscillation experiment with a superconducting qubit we show that a visibility in the qubit excited state population of more than 95% can be attained. We perform a dispersive measurement ofExpand
Solid-state quantum memory using the 31P nuclear spin
The transfer of information between different physical forms—for example processing entities and memory—is a central theme in communication and computation. This is crucial in quantum computation,Expand
Scaling the neutral-atom Rydberg gate quantum computer by collective encoding in holmium atoms
We discuss a method for scaling a neutral-atom Rydberg gate quantum processor to a large number of qubits. Limits are derived showing that the number of qubits that can be directly connected byExpand
Cavity QED based on collective magnetic dipole coupling: spin ensembles as hybrid two-level systems.
TLDR
The proposal described here enables new avenues for nonlinear optics using optical photons coupled to spin ensembles via Raman transitions through the possibility of strong coupling cavity QED with magnetic dipole transitions with a Josephson junction based transmon qubit. Expand
A coherent all-electrical interface between polar molecules and mesoscopic superconducting resonators
Building a scalable quantum processor requires coherent control and preservation of quantum coherence in a large-scale quantum system. Mesoscopic solid-state systems such as Josephson junctions andExpand
...
1
2
3
4
5
...