  We present a proposal for heralded entanglement between two quantum dots via
Hong--Ou--Mandel effect. Each of the quantum dots, drived off-resonance by two
lasers, can be entangled with the coherent cavity mode. The output photons from
the two coherent cavity modes interfering by a beamsplitter, we could entangle
the two QDs with nearly unit success probability. Our scheme requires neither
direct coupling between qubits nor the detection of single photons. Moreover
the quantum dots do not need to have the same frequencies and coupling
constants.
