https://doi.org/10.1140/epjd/e2006-00236-6
Generation of a four-qubit cluster state for atoms in a thermal cavity
School of Physics & Material Science, Anhui University, Hefei, 230039, P.R. China
Corresponding author: a yeliu@ahu.edu.cn
Received:
25
August
2006
Published online:
20
October
2006
We propose two schemes for generating a four-atom cluster state in a thermal cavity. With the assistant of a strong classical field the photon-number-dependent parts in the effective Hamiltonian are canceled. Thus the schemes are insensitive to the thermal field. The schemes can also be used to generate the cluster state for the trapped ions in thermal motion.
PACS: 03.67.Mn – Entanglement production, characterization, and manipulation / 42.50.Dv – Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements / 42.50.Vk – Mechanical effects of light on atoms, molecules, electrons, and ions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006
