Simple scheme for implementing the Deutsch–Jozsa algorithm in a thermal cavity

Wen-Xing Yang, Zhe-Xuan Gong, Wei-Bin Li, Xiao-Xue Yang
2006 Journal of Physics A: Mathematical and Theoretical  
We present a simple scheme to implement the Deutsch-Jozsa algorithm based on two-atom interaction in a thermal cavity. The photon-number-dependent parts in the evolution operator are canceled with the strong resonant classical field added. As a result, our scheme is immune to thermal field, and does not require the cavity to remain in the vacuum state throughout the procedure. Besides, large detuning between the atoms and the cavity is not necessary neither, leading to potential speed up of
more » ... ial speed up of quantum operation. Finally, we show by numerical simulation that the proposed scheme is equal to demonstrate the Deutsch-Jozsa algorithm with high fidelity.
doi:10.1088/1751-8113/40/1/009 fatcat:xckodar2jfak7dgj5b7yqsbtbi