Transient and Fast Generation of Bose-Einstein-Condensate Macroscopic Quantum Superposition States via Impurity Catalysing

Macroscopic quantum superposition is an important embodiment of the core theory. The engineering macroscopic states key to communication and computation. Thus, we present a theoretical proposal engineer (MQS) Bose-Einstein condensate (BEC) via impurity atoms. We firstly propose deterministic generation scheme transient multi-component MQS BEC catalysing. It found that structure generated can be manipulated by number parity. Then, illustrate influence parity on through three aspects: approximately orthogonal continuous-variable cat states, manipulation non-classicality in phase space, switching non-classical degree states. decoherence discussed fidelity between actually target Finally, results show high-fidelity fast increasing coherent interaction strength impurities open system.