We propose an alternative scheme for generation of atomic Schrodinger cat states in an optical cavity. In thescheme the atoms are always populated in the two ground states and the cavity remains in the vacuum state. T...We propose an alternative scheme for generation of atomic Schrodinger cat states in an optical cavity. In thescheme the atoms are always populated in the two ground states and the cavity remains in the vacuum state. Therefore,the scheme is insensitive to the atomic spontaneous emission and cavity decay. The scheme may be generalized to thedeterministic generation of entangled coherent states for two atomic samples. In contrast with the previously proposedschemes of [Commun. Theor. Phys. 40 (2003) 103 and Chin. Phys. B 18 (2009) 1045], the required interaction time inour scheme is greatly shortened and thus the decoherenee can be effectively suppressed.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos. 60878059 and 10947147the Funds of Educational Committee of Fujian Province under Grant Nos. JA09014 and JB08066the Funds from Fujian Normal University under Grant No. 2008100220
文摘We propose an alternative scheme for generation of atomic Schrodinger cat states in an optical cavity. In thescheme the atoms are always populated in the two ground states and the cavity remains in the vacuum state. Therefore,the scheme is insensitive to the atomic spontaneous emission and cavity decay. The scheme may be generalized to thedeterministic generation of entangled coherent states for two atomic samples. In contrast with the previously proposedschemes of [Commun. Theor. Phys. 40 (2003) 103 and Chin. Phys. B 18 (2009) 1045], the required interaction time inour scheme is greatly shortened and thus the decoherenee can be effectively suppressed.
