  The use of probabilistic amplification for astronomical imaging is discussed.
Probabilistic single photon amplification has been theoretically proven and
practically demonstrated in quantum optical laboratories. In astronomy it
should allow to increase the angular resolution beyond the diffraction limit at
the expense of throughput: not every amplification event is successful --
unsuccessful events contain a large fraction of noise and need to be discarded.
This article indicates the fundamental limit in the trade-off between gain in
angular resolution and loss in throughput. The practical implementation of
probabilistic amplification for astronomical imaging remains an open issue.
