Soliton Cryptography Using Dark-bright Conversion in a PANDA

We proposed a concept of cryptography using dark-bright soliton conversion be- haviors within a nonlinear ring resonator, in which the orthogonal soliton is established among the soliton conversion. A new model of add/drop fllters is modifled which is known as a PANDA ring resonator is proposed. The orthogonal solitons can be formed randomly within the system and detected simultaneously at the output ports. The entangled solitons (photons) can be formed in the same way of the entangled photons, but in this case the entangled soliton pair is gained more power that gives the advantage of long distance communication.