Observation of entanglement between itinerant microwave photons and a superconducting qubit

C. Eichler, C. Lang, J.M. Fink, J. Govenius, S. Filipp, A. Wallraff, Physical Review Letters 109 (2012).

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Journal Article | Published
Author
Eichler, Christopher; Lang, C; Fink, Johannes MIST Austria ; Govenius, J; Filipp, Stefan; Wallraff, Andreas
Abstract
A localized qubit entangled with a propagating quantum field is well suited to study nonlocal aspects of quantum mechanics and may also provide a channel to communicate between spatially separated nodes in a quantum network. Here, we report the on-demand generation and characterization of Bell-type entangled states between a superconducting qubit and propagating microwave fields composed of zero-, one-, and two-photon Fock states. Using low noise linear amplification and efficient data acquisition we extract all relevant correlations between the qubit and the photon states and demonstrate entanglement with high fidelity.
Publishing Year
Date Published
2012-12-10
Journal Title
Physical Review Letters
Acknowledgement
This work was supported by the European Research Council (ERC) through a Starting Grant and by ETHZ
Volume
109
Issue
24
IST-REx-ID

Cite this

Eichler C, Lang C, Fink JM, Govenius J, Filipp S, Wallraff A. Observation of entanglement between itinerant microwave photons and a superconducting qubit. Physical Review Letters. 2012;109(24). doi:10.1103/PhysRevLett.109.240501
Eichler, C., Lang, C., Fink, J. M., Govenius, J., Filipp, S., & Wallraff, A. (2012). Observation of entanglement between itinerant microwave photons and a superconducting qubit. Physical Review Letters, 109(24). https://doi.org/10.1103/PhysRevLett.109.240501
Eichler, Christopher, C Lang, Johannes M Fink, J Govenius, Stefan Filipp, and Andreas Wallraff. “Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit.” Physical Review Letters 109, no. 24 (2012). https://doi.org/10.1103/PhysRevLett.109.240501.
C. Eichler, C. Lang, J. M. Fink, J. Govenius, S. Filipp, and A. Wallraff, “Observation of entanglement between itinerant microwave photons and a superconducting qubit,” Physical Review Letters, vol. 109, no. 24, 2012.
Eichler C, Lang C, Fink JM, Govenius J, Filipp S, Wallraff A. 2012. Observation of entanglement between itinerant microwave photons and a superconducting qubit. Physical Review Letters. 109(24).
Eichler, Christopher, et al. “Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit.” Physical Review Letters, vol. 109, no. 24, American Physical Society, 2012, doi:10.1103/PhysRevLett.109.240501.

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