| Abstract: | This paper proposes schemes for generating multiple-photon and
multiple-atom cluster states, respectively. The schemes are based on
the cavity input--output process and atomic or photonic states
measurement, and the successful probabilities approach unity in the
ideal case. The numerical simulations show that the produced
multiple-particle cluster states have high fidelity even if the
Lamb--Dicke condition is not satisfied. Some practical imperfections,
such as atomic spontaneous emission and output coupling inefficiency,
only decrease the success probability but exert no influence on the
fidelity of generated multiple-particle cluster states. From the
experimental point of view, smaller operation number and lack of need
for individual addressing keeps the schemes easy to implement. These
schemes may offer a promising approach to the generation of a
large-scale cluster state. |
