Broadcasting of Inseparability
arXiv:quant-ph/0601181 · doi:10.1088/0305-4470/39/26/011
Abstract
Suppose we are given an entangled pair and then one can ask how well we can produce two entangled pairs starting from a given entangled pair using only local operations. To give response of the above asked question, we study broadcasting of entanglement using state dependent quantum cloning machine as a local copier. We show that the length of the interval for probability-amplitude-squared for broadcasting of entanglement using state dependent cloner can be made larger than the length of the interval for probability-amplitude-squared for broadcasting entanglement using state independent cloner. Further we show that there exists local state dependent cloner which gives better quality copy (in terms of average fidelity) of an entangled pair than the local universal cloner.
13 pages, 2 tables, Accepted in Journal of Physics A
References in corpus (12)
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Cited by in corpus (12)
- Complementarity between Tripartite Quantum Correlation and Bipartite Bell Inequality Violation in Three Qubit States
- Broadcasting of continuous variable entanglement
- Broadcasting of Quantum Correlations: Possibilities & Impossibilities
- Asymmetric broadcasting of quantum correlations
- A note on superposition of two unknown states using Deutsch CTC model
- Broadcasting of correlations via orthogonal & non-orthogonal state dependent cloners
- Universal covariant quantum cloning circuits for qubit entanglement manipulation
- Reliable entanglement transfer between pure quantum states
- Two-qubit universal and state-dependent quantum cloning machine and quantum correlation broadcasting
- Three Party Quantum Networks Created by Quantum Cloning
- Broadcasting of non-locality
- Broadcasting of NPT Entanglement in Two Qutrit Systems