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High efficiency tomographic reconstruction of quantum states by quantum nondemolition measurements
High efficiency tomographic reconstruction of quantum states quantum nondemolition measurements
2010/10/20
We propose a high efficiency tomographic scheme to reconstruct an unknown quantum state of the qubits by using a series of quantum nondemolition (QND) measurements. The proposed QND measurements of th...
Criteria excluding full separability of multi-qubit quantum states
Criteria excluding full separability multi-qubit quantum states
2010/10/20
We introduce a criterion to exclude full separability of quantum states. We present numerical evidence that the criterion is necessary and sufficient for the class of GHZ diagonal three-qubit states a...