Catalyzed entanglement concentration of qubit pairs
- URL: http://arxiv.org/abs/2007.10516v1
- Date: Mon, 20 Jul 2020 22:26:26 GMT
- Title: Catalyzed entanglement concentration of qubit pairs
- Authors: Siddhartha Santra and Vladimir S. Malinovsky
- Abstract summary: We analytically obtain the maximum probability of converting a finite number of copies of an arbitrary two-qubit pure state to a single copy of a maximally entangled two-qubit pure state.
We show that the optimal catalyst for this transformation is always more entangled than the initial state but any two-qubit state can act as a (non-optimal) catalyst.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We analytically obtain the maximum probability of converting a finite number
of copies of an arbitrary two-qubit pure state to a single copy of a maximally
entangled two-qubit pure state via entanglement assisted local operations and
classical communications using a two-qubit catalyst state. We show that the
optimal catalyst for this transformation is always more entangled than the
initial state but any two-qubit state can act as a (non-optimal) catalyst.
Interestingly, the entanglement of the optimal two-qubit catalyst state is
shown to decrease with that of the initial state. Entanglement assisted
strategies for obtaining multiple Bell states are discussed.
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