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Generating Entangled Microwave Radiation Over Two Transmission Lines
Open accessAbstract
Using a superconducting circuit, the Josephson mixer, we demonstrate the first experimental realization of spatially separated two-mode squeezed states of microwave light. Driven by a pump tone, a first Josephson mixer generates, out of quantum vacuum, a pair of entangled fields at different frequencies on separate transmission lines. A second mixer, driven by a π-phase shifted copy of the first pump tone, recombines and disentangles the two fields. The resulting output noise level is measured to be lower than for the vacuum state at the input of the second mixer, an unambiguous proof of entanglement. Moreover, the output noise level provides a direct, quantitative measure of entanglement, leading here to the demonstration of 6 Mebit · s(-1) (mega entangled bits per second) generated by the first mixer.
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Citations
Cites
Quantum information with continuous variables
Braunstein, S. L., & van Loock, P. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.513 · Cited by 3,858
Cited by
Peropadre, B., Zueco, D., Wulschner, F., Deppe, F., Marx, A., Gross, R., & García-Ripoll, J. J. (2013) · Physical Review B · doi:10.1103/physrevb.87.134504 · Cited by 121
Metadata
- Authors
- Flurin, E., Roch, N., Mallet, F., Devoret, M. H., & Huard, B.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2012-10-31
- Volume
- 109
- Issue
- 18
- Pages
- 183901-183901
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2000137106
- Cited by
- 272
- References
- 1
- FWCI
- 16.15
- Type
- journal article
- Language
- en
- Open access
- green
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- Flurin, E., Roch, N., Mallet, F., Devoret, M. H., & Huard, B. (2012). Generating Entangled Microwave Radiation Over Two Transmission Lines. Physical Review Letters. https://doi.org/10.1103/physrevlett.109.183901
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