Simple and Scalable Method for Generation of Trapped Ions’ W State

Zheng Xiao-Juan, Xue-mei Xu, Fangping Ouyang +1 more

A simple and scalable scheme is proposed to generate a n-qubit W state in a trapped-ion system without the Lamb–Dicke limit. The n-qubit W state can be generated by the interaction between the ions and the laser field if the collective mode is initially prepared in the single-phonon state and each ion is in the ground state. The scheme only requires a single laser and avoids laser manipulation of the individual ion. The time required to complete the process decreases with the number of ions. The present scheme is not limited to small values of the LD parameter, which greatly enhances operation speeds.

Galina A. Nemova

Meirav Pinkas, Or Katz, Jonathan M. Wengrowicz +2 more

Wen‐Xing Yang, 詹志明, 李家华

We propose a simple method to generate a practical SU(2)-Schroedinger-cat state of a single trapped-ion vibration mode and the light field state, using the method based on a quantum system, which is composed of the onedimensional trapped-ion motion and a single cavity field mode. Moreover, the method proposed can be used for the generation two-mode maximal quantum entangled state. The detection of such a state is also briefly discussed.

Wen‐Xing Yang, Zhiming Zhan, Jiahua Li

We propose a simple method to generate a practical SU(2)-Schrödinger-cat state of a single trapped-ion vibration mode and the light field state, using the method based on a quantum system, which is composed of the one-dimensional trapped-ion motion and a single cavity field mode. Moreover, we discuss the methods proposed so far for the generation two-mode maximal quantum entangled state. The detection of such a state is also briefly discussed.

Q. A. Turchette, B. E. King, Christopher J. Myatt +6 more