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While single boson entanglement is known to be equivalent to standardnon-identical particle entanglement, the use of fermionic entanglement isconstrained by a parity superselection rule. Nevertheless we show that withinthe framework of second quantization, where local modes play the role ofqubits, the analogy with ordinary entanglement holds: two entangled spinlessfermion modes can be used to teleport a single local fermion mode and toperform standard dense coding. Entanglement concentration and dilution arepossible for fermions. We clarify the meaning of our results by discussing theconnection with quantum reference frames and conversion between spinlessfermion entanglement and spinless boson entanglement.

Quantum information with single fermions: teleportation and fermion-boson entanglement conversion