Scheme to implement general economical phase-covariant telecloning

We propose an experimentally feasible scheme to implement the telecloning protocol for the 1→2 general economical phase-covariant machine, which works without ancilla, based on cavity QED. During telecloning process, the cavity is only virtually excited, thus it greatly prolongs the efficient decoherent time. Therefore, the scheme can be experimentally realized in the range of current cavity QED techniques.