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| Content Provider | Springer Nature Link |
|---|---|
| Author | Macke, Bru Ségard, Bernard |
| Copyright Year | 2016 |
| Abstract | In a recent theoretical article [S.H. Kazemi, S. Ghanbari, M. Mahmoudi, Eur. Phys. J. D 70, 1 (2016)], Kazemi et al. claim to have demonstrated superluminal light transmission in an optomechanical system where a Bose-Einstein condensate serves as the mechanical oscillator. In fact the superluminal propagation is only inferred from the existence of a minimum of transmission of the system at the probe frequency. This condition is not sufficient and we show that, in all the cases where superluminal propagation is claimed by Kazemi et al., the propagation is in reality subluminal. Moreover, we point out that the system under consideration is not minimum-phase-shift. The Kramers-Kronig relations then only fix a lower limit to the group delay and we show that these two quantities have sometimes opposite signs. |
| Starting Page | 1 |
| Ending Page | 4 |
| Page Count | 4 |
| File Format | |
| ISSN | 14346060 |
| Journal | The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics |
| Volume Number | 70 |
| Issue Number | 9 |
| e-ISSN | 14346079 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2016-09-22 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Optical Phenomena and Photonics Atomic, Molecular, Optical and Plasma Physics Physical Chemistry Quantum Physics Quantum Information Technology, Spintronics Spectroscopy/Spectrometry Applications of Nonlinear Dynamics and Chaos Theory |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics |
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