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Phys Rev Lett. 2008 Jan 18;100(2):024102. Epub 2008 Jan 15.

Loss enhanced phase locking in coupled oscillators.

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  • 1Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 76100 Israel.


Phase locking, which is achieved by transferring some energy from one oscillator to the others, strongly depends on the coupling strength between the oscillators. Typically, the coupling strength must be above a certain threshold in order to achieve phase locking. Here we show how this threshold can be significantly reduced when phase-dependent losses are introduced into the oscillators. Specifically, the coupling strength can be reduced by at least an order of magnitude, thereby substantially decreasing the needed transfer of energy between oscillators. The resulting enhancement of phase locking does not only influence the laser research area, but also affects many other areas that involve coupled ensembles.

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