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Increasing Entanglement between Gaussian States by Coherent Photon Subtraction
Open accessAbstract
We experimentally demonstrate that the entanglement between Gaussian entangled states can be increased by non-Gaussian operations. Coherent subtraction of single photons from Gaussian quadrature-entangled light pulses, created by a nondegenerate parametric amplifier, produces delocalized states with negative Wigner functions and complex structures more entangled than the initial states in terms of negativity. The experimental results are in very good agreement with the theoretical predictions.
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Citations
Cites
Iterative algorithm for reconstruction of entangled states
Řeháček, J., Hradil, Z., & Ježek, M. (2001) · Physical Review A · doi:10.1103/physreva.63.040303 · Cited by 130
Cited by
Horodecki, R., Horodecki, P., Horodecki, M., & Horodecki, K. (2009) · Reviews of Modern Physics · doi:10.1103/revmodphys.81.865 · Cited by 10,118
Continuous Variable Quantum Information: Gaussian States and Beyond
Adesso, G., Ragy, S., & Lee, A. R. (2014) · Open Systems & Information Dynamics · doi:10.1142/s1230161214400010 · Cited by 787
Entanglement in continuous-variable systems: recent advances and current perspectives
Adesso, G., & Illuminati, F. (2007) · Journal of Physics A: Mathematical and Theoretical · doi:10.1088/1751-8113/40/28/s01 · Cited by 744
Hybrid discrete- and continuous-variable quantum information
Andersen, U. L., Neergaard-Nielsen, J. S., van Loock, P., & Furusawa, A. (2015) · Nature Physics · doi:10.1038/nphys3410 · Cited by 437
Modes and states in quantum optics
Fabre, C., & Treps, N. (2020) · Reviews of Modern Physics · doi:10.1103/revmodphys.92.035005 · Cited by 312
Metadata
- Authors
- Ourjoumtsev, A., Dantan, A., Tualle-Brouri, R., & Grangier, P.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-01-17
- Volume
- 98
- Issue
- 3
- Pages
- 030502-030502
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2592609950
- Cited by
- 338
- References
- 1
- FWCI
- 26.79
- Type
- journal article
- Language
- en
- Open access
- green
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