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A new method based on coherent feedback control theory is proposed to cool the optomechanical resonator. In this study, we focus on the weak-driving strong-coupling two-mode optomechanical system, which creates nonlinear coupling regime between cavity modes and the mechanical mode. By means of our design, two cavity resonators are coherently connected with each other, which constructs a closed quantum...
The attack induced by the eavesdropper will lower the bit rate or even lead to the failure of quantum communication. To solve this problem, we introduce a so-called quantum chaotic communication method to mask and thus actively protect the quantum information by chaotic signal from being attacked. The encoding and decoding processes are realized by transmitting the communicated quantum signals through...
Wave breaking of similariton in all-normal-dispersion (ANDi) fiber lasers is studied theoretically and experimentally. The nonlinear intra-cavity spectral filtering balance becomes unstable with greatly-decreased ASE noise tolerance under excessive nonlinearity, and then wave breaking occurs.
We have developed a simple, manageable, and self-organized manner - thermally oxidizing SiGe nanocavity for precisely controlling Ge quantum dot (QD) number, position, and tunnel path, which is crucial for effective single-electron tunneling devices. The internal structure properties of Ge QDs were systematically characterized. The effectiveness of Ge QD placement is evidenced by high performance...
The properties of third-order dispersion (TOD) compensation of a double pumped ring fiber laser was simulated. Results of numerical simulation demonstrate that device performances are better than the laser with traditional structure.
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