



01118nas a2200145   4500008004100000245008400041210006900125260001500194300001400209490000700223520066000230100001900890700001900909856004400928       2007                        eng d00aSimple scheme for implementing the Deutsch-Jozsa algorithm in thermal  cavity
0 aSimple scheme for implementing the DeutschJozsa algorithm in the  c2007/01/05  a155 - 1610 v403 a  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 quantum operation. Finally, we show by
numerical simulation that the proposed scheme is equal to demonstrate the
Deutsch-Jozsa algorithm with high fidelity.
1 aYang, Wen-Xing1 aGong, Zhe-Xuan  uhttp://arxiv.org/abs/quant-ph/0611225v2