Mohd Syafiq M. Hanapi, Abdel-Baset M. A. Ibrahim, Rafael Julius, Pankaj K. Choudhury, Hichem Eleuch
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引用次数: 0
摘要
本文讨论了在三波导非线性耦合器中产生二次谐波的可能挤压状态。这项研究采用了两种著名的技术:相空间方法(基于正 P 表示)和基于海森堡的分析扰动(AP)方法。研究了各种条件下关键设计参数的影响,包括全频率匹配、对称和不对称波导初始化以及同向和反向传播。即使只有一个波导被相干光泵浦,而其他波导处于真空状态,该系统也能在所有三个波导上持续产生持久的振荡挤压态。此外,还对两种方法的性能和容量进行了严格评估。对于低水平的关键设计参数和早期演化阶段,两种方法的一致性很高。在基于量子技术的新时代,所提出的系统为利用非线性耦合器产生非经典光开辟了一条新途径。
Nonclassical light in a three-waveguide coupler with second-order nonlinearity
Possible squeezed states generated in a three-waveguide nonlinear coupler operating with second harmonic generation is discussed. This study is carried out using two well-known techniques; the phase space method (based on positive-P representation) and the Heisenberg-based analytical perturbative (AP) method. The effects of key design parameters were investigated under various conditions, including full frequency matching, symmetrical and asymmetrical waveguide initialization, and both codirectional and contr-adirectional propagation. The system consistently produced long-lasting oscillatory squeezed states across all three waveguides, even when only one waveguide was pumped with coherent light while the others were in a vacuum state. Also, the performance and capacities of both methods are critically evaluated. For low levels of key design parameters and in the early stages of evolution, a high level of agreement between the two methods is noticed. In the new era of quantum-based technology, the proposed system opens a new avenue for utilising nonlinear couplers in nonclassical light generation.
期刊介绍:
Driven by advances in technology and experimental capability, the last decade has seen the emergence of quantum technology: a new praxis for controlling the quantum world. It is now possible to engineer complex, multi-component systems that merge the once distinct fields of quantum optics and condensed matter physics.
EPJ Quantum Technology covers theoretical and experimental advances in subjects including but not limited to the following:
Quantum measurement, metrology and lithography
Quantum complex systems, networks and cellular automata
Quantum electromechanical systems
Quantum optomechanical systems
Quantum machines, engineering and nanorobotics
Quantum control theory
Quantum information, communication and computation
Quantum thermodynamics
Quantum metamaterials
The effect of Casimir forces on micro- and nano-electromechanical systems
Quantum biology
Quantum sensing
Hybrid quantum systems
Quantum simulations.