Quantum Phase Gates for Trapped Ions via Adiabatic Passage

Xinglai Zhang, Xun‐Li Feng, Chunfeng Wu +1 more

Xun‐Li Feng, Chunfeng Wu, C. H. Lai +3 more

M. Amniat-Talab, M. Saadati-Niari, S. Guérin

Zheng Shi-Biao

We propose a scheme to produce quantum phase gates for trapped ions. Taking advantage of the adiabatic evolution, the operation is insensitive to small fluctuations of experimental parameters. Furthermore, the spontaneous emission is suppressed since the ions have no probability of being populated in the electronic excited states.

Zheng Shi-Biao

We propose a scheme for implementing nongeometric phase gates for two trapped ions via adiabatic passage of dark states. During the operation, the vibrational mode is only virtually excited, thus the scheme is insensitive to heating. Furthermore, the spontaneous emission is suppressed since the ions are always in the electronic ground states. The scheme is robust against small fluctuations of parameters, and the conditional phase is tunable.

J. I. Cirac, P. Zoller, Juan F. Poyatos