Quantum logic operations with "hot" ions

H. G. J. Eenink, Luca Petit, Maximilian Russ +5 more

Christopher R. Monroe, David J. Wineland

Shi-Biao Zheng

We propose a scheme for realizing two-qubit quantum phase gates with trapped ions in thermal motion. In the scheme, the ions are simultaneously illuminated by a standing-wave laser tuned to the carrier, which virtually excites several vibrational modes. The scheme puts no limitations on the intensity of the laser field, allowing the production of a quantum logic gate for hot ions with an arbitrarily high speed as long as a laser field of sufficiently high intensity is available.

Jürgen Eschner

Zeng Hao-Sheng, Chen Dao-Jia, Kuang Le-Man +1 more

Based on the scheme of ``hot'' trapped-ion quantum computation proposed by Sϕrensen and Mϕlmer, we construct a set of multi-mode excited logic gates on trapped ions, which may be operated on arbitrary even number of ions selected randomly from a string of ions trapped in a linear trap. The gate speed may be made faster than that of the corresponding one-mode excited logic gate by adjusting appropriately the detunings of driving lasers with respect to the sidebands of vibrational modes and can be demonstrated in current experimental techniques.

曾浩生, 陈道佳, 匡乐满 +1 more

Based on the scheme of hot trapped-ion quantum computation proposed by Sφrensen and Mφlmer, we construct a set of multi-mode excited logic gates on trapped ions, which may be operated on arbitrary even number of ions selected randomly from a string of ions trapped in a linear trap. The gate speed may be made faster than that of the corresponding one-mode excited logic gate by adjusting appropriately the detunings of driving lasers with respect to the sidebands of vibrational modes and can be demonstrated in current experimental techniques.