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Superconducting Resonators as Beam Splitters for Linear-Optics Quantum Computation

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2010

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Chirolli, Luca
Kumar, Shwetank
DiVincenzo, David P.

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http://nbn-resolving.de/urn:nbn:de:bsz:352-124458
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https://doi.org/10.1103/PhysRevLett.104.230502
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Physical Review Letters. 2010, 104(23). ISSN 0031-9007. Available under: doi: 10.1103/PhysRevLett.104.230502

Zusammenfassung

We propose and analyze a technique for producing a beam-splitting quantum gate between two modes of a ring-resonator superconducting cavity. The cavity has two integrated superconducting quantum interference devices (SQUIDs) that are modulated by applying an external magnetic field. The gate is accomplished by applying a radio frequency pulse to one of the SQUIDs at the difference of the two mode frequencies. Departures from perfect beam splitting only arise from corrections to the rotating wave approximation; an exact calculation gives a fidelity of >0.9992. Our construction completes the toolkit for linear-optics quantum computing in circuit quantum electrodynamics.

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ISO 690CHIROLLI, Luca, Guido BURKARD, Shwetank KUMAR, David P. DIVINCENZO, 2010. Superconducting Resonators as Beam Splitters for Linear-Optics Quantum Computation. In: Physical Review Letters. 2010, 104(23). ISSN 0031-9007. Available under: doi: 10.1103/PhysRevLett.104.230502
BibTex
@article{Chirolli2010Super-12445,
  year={2010},
  doi={10.1103/PhysRevLett.104.230502},
  title={Superconducting Resonators as Beam Splitters for Linear-Optics Quantum Computation},
  number={23},
  volume={104},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Chirolli, Luca and Burkard, Guido and Kumar, Shwetank and DiVincenzo, David P.}
}
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