Quantum networks for concentrating entanglement
Phillip Kaye, Michele Mosca · Journal of Physics A Mathematical and General · 2001
If two parties, Alice and Bob, share some number, n , of partially entangled pairs of qubits, then it is possible for them to concentrate these pairs into some smaller number of maximally entangled states. We present a simplified version of the algorithm for such entanglement concentration , and we describe efficient networks for implementing these operations.