Storing and Harvesting Atoms/Molecules On-Chip: Challenges and

In this letter, a new design of microring resonator device is proposed which can be used to generate four forms of light simultaneously on a chip, while the storing and harvesting of trapped atoms/molecules can also be available. The proposed device is made up of silica and InGaAsP/ InP with linear optical add-drop filter incorporating two nonlinear micro/nano rings on both sides of the center ring (add-drop filter). This particular configuration is known as a “PANDA” ring resonator [7] as shown in figure1. Light pulse, for instance, Gaussian, bright and dark solutions are fed into the system through different ports such as add port and through port. By using the practical device parameters, the simulation results are obtained using the Opt wave and MATLAB programs. Results obtained by both analytical and numerical methods show that many applications can be exploited. In application, when the practical device parameters are used, then such device can be fabricated and implemented in the near future. The proposed system can be used for many applications, especially, when the device is coated by a metallic material [8]. The applications such as atom/molecule transportation, molecule/atom antenna, atomic/ molecular automata, atom/molecule electronic devices, cells/atom distributed sensors, cells/atom radio, cells communications, micro Faraday cage, molecular/atom storage and logistics, atom/molecule trapping (storage) or cooling, everlasting atom/molecule investigation atomic/molecular storage for quantum gate or computer application, storm search and navigator sensors, magnetic/spin networks, magnetic net, micro plasma source, 3-D flat panel device and large cooling area (volume) can be constructed in the same way as a single device. In this work one of them is demonstrate. Under the stopping and storing condition, the system is considered as the storage unit, where atom or molecule can be trapped by the whispering gallery light beam at the center. The whispering gallery mode result is obtained by using the Optiwave program as shown in figure 2. The ring material is InGaAsP/ InP, where the device parameters are given in figure caption. By using the MATLAB program, the whispering gallery modes of four state of light i.e. fast, slow, stopping and storing can be generated and controlled simultaneously on-chip as shown in figure 3. The storing stage can be seen easily, while the stopping condition can be observed and the following conditions satisfied: (i) the center signal is lost in time between fast and slow signals or (ii) there is no movement among trapped particles or molecules i.e. the exchange of angular momentum introduces the conservation of angular momentum, where the combination of scattering and gradient forces is balanced under the adiabatic process.