Through advances in metamaterials—artificially engineered media with exotic properties, including negative refractive index1,2,3—the once fanciful invisibility cloak has now assumed a prominent place in scientific research4,5,6,7,8,9,10,11,12,13. By extending these concepts to the temporal domain14, investigators have recently described a cloak which hides events in time by creating a temporal gap in a probe beam that is subsequently closed up; any interaction which takes place during this hole in time is not detected15. However, these results are limited to isolated events that fill a tiny portion of the temporal period, giving a fractional cloaking window of only about 10−4 per cent at a repetition rate of 41 kilohertz (ref. 15)—which is much too low for applications such as optical communications. Here we demonstrate another technique for temporal cloaking, which operates at telecommunication data rates and, by exploiting temporal self-imaging through the Talbot effect, hides optical data from a receiver. We succeed in cloaking 46 per cent of the entire time axis and conceal pseudorandom digital data at a rate of 12.7 gigabits per second. This potential to cloak real-world messages introduces temporal cloaking into the sphere of practical application, with immediate ramifications in secure communications.
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Veselago, V. G. The electrodynamics of substances with simultaneously negative values of ε and μ. Sov. Phys. Usp. 10, 509 (1968)
Pendry, J. B., Holden, A. J., Robbins, D. J. & Stewart, W. J. Magnetism from conductors and enhanced nonlinear phenomena. IEEE Trans. Microw. Theory Tech. 47, 2075–2084 (1999)
Smith, D. R., Padilla, W. J., Vier, D. C., Nemat-Nasser, S. C. & Schultz, S. Composite medium with simultaneously negative permeability and permittivity. Phys. Rev. Lett. 84, 4184–4187 (2000)
Alù, A. & Engheta, N. Achieving transparency with plasmonic and metamaterial coatings. Phys. Rev. E 72, 016623 (2005)
Leonhardt, U. Optical conformal mapping. Science 312, 1777–1780 (2006)
Pendry, J. B., Schurig, D. & Smith, D. R. Controlling electromagnetic fields. Science 312, 1780–1782 (2006)
Schurig, D. et al. Metamaterial electromagnetic cloak at microwave frequencies. Science 314, 977–980 (2006)
Li, J. & Pendry, J. B. Hiding under the carpet: a new strategy for cloaking. Phys. Rev. Lett. 101, 203901 (2008)
Shalaev, V. M. Transforming light. Science 322, 384–386 (2008)
Liu, R. et al. Broadband ground-plane cloak. Science 323, 366–369 (2009)
Valentine, J., Li, J., Zentgraf, T., Bartal, G. & Zhang, X. An optical cloak made of dielectrics. Nature Mater. 8, 568–571 (2009)
Smolyaninov, I. I., Smolyaninova, V. N., Kildishev, A. V. & Shalaev, V. M. Anisotropic metamaterials emulated by tapered waveguides: application to optical cloaking. Phys. Rev. Lett. 102, 213901 (2009)
Chen, H., Chan, C. T. & Sheng, P. Transformation optics and metamaterials. Nature Mater. 9, 387–396 (2010)
McCall, M. W., Favaro, A., Kinsler, P. & Boardman, A. A spacetime cloak, or a history editor. J. Opt. 13, 024003 (2011)
Fridman, M., Farsi, A., Okawachi, Y. & Gaeta, A. L. Demonstration of temporal cloaking. Nature 481, 62–65 (2012)
Kolner, B. H. & Nazarathy, M. Temporal imaging with a time lens. Opt. Lett. 14, 630–632 (1989)
Kolner, B. H. Space-time duality and the theory of temporal imaging. IEEE J. Quantum Electron. 30, 1951–1963 (1994)
Bennett, C. V. & Kolner, B. H. Principles of parametric temporal imaging. I. System configurations. IEEE J. Quantum Electron. 36, 430–437 (2000)
Bennett, C. V. & Kolner, B. H. Principles of parametric temporal imaging. II. System performance. IEEE J. Quantum Electron. 36, 649–655 (2000)
Torres-Company, V., Lancis, J. & Andres, P. in Progress in Optics (ed. Wolf, E. ) Vol. 56, Ch. 1 (Elsevier, 2011)
Bennett, C. V. & Kolner, B. H. Aberrations in temporal imaging. IEEE J. Quantum Electron. 37, 20–32 (2001)
Patorsksi, K. in Progress in Optics (ed. Wolf, E. ) Vol. 27, Ch. 1 (Elsevier, 1989)
Jannson, T. & Jannson, J. Temporal self-imaging effect in single-mode fibers. J. Opt. Soc. Am. 71, 1373–1376 (1981)
Guigay, J. P. On Fresnel diffraction by one-dimensional periodic objects, with application to structure determination of phase objects. Opt. Acta 18, 677–682 (1971)
Komukai, T., Yamamoto, T. & Kawanishi, S. Optical pulse generator using phase modulator and linearly chirped fiber Bragg gratings. IEEE Photon. Technol. Lett. 17, 1746–1748 (2005)
Torres-Company, V., Lancis, J. & Andrés, P. Unified approach to describe optical pulse generation by propagation of periodically phase-modulated CW laser light. Opt. Express 14, 3171–3180 (2006)
Torres-Company, V., Lancis, J. & Andrés, P. Lossless equalization of frequency combs. Opt. Lett. 33, 1822–1824 (2008)
Farhat, M. et al. Understanding the functionality of an array of invisibility cloaks. Phys. Rev. B 84, 235105 (2011)
Smolyaninova, V. N., Smolyaninov, I. I. & Ermer, H. K. Experimental demonstration of a broadband array of invisibility cloaks in the visible frequency range. New J. Phys. 14, 053029 (2012)
Metcalf, A. J., Torres-Company, V., Leaird, D. E. & Weiner, A. M. High-power broadly tunable electro-optic frequency comb generator. IEEE J. Sel. Top. Quant. Electron (in the press)
We thank V. Shalaev and V. Torres-Company for comments and discussions. This project was supported in part by the National Science Foundation (grant number ECCS-1102110) and the Naval Postgraduate School (grant number N00244-09-1-0068) under the National Security Science and Engineering Faculty Fellowship programme. (Any opinions, findings and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the sponsors.) J.M.L. acknowledges financial support from the Department of Defense through a National Defense Science and Engineering Graduate Fellowship.
The authors declare no competing financial interests.
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Lukens, J., Leaird, D. & Weiner, A. A temporal cloak at telecommunication data rate. Nature 498, 205–208 (2013). https://doi.org/10.1038/nature12224
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