Non-entangling channels amplify existing entanglement only if they generate it probabilistically, yielding a channel Schmidt number and witness-preserving dual maps that enable Bell-like detection of entanglement generation.
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A method is given to compute the minimum energy of certain spin Hamiltonians over separable states, expressed via quantum Fisher information for Ising models and fidelity for Heisenberg chains.
A new optimization-based protocol estimates quantum coherence from scarce data with system-size-independent cost and is experimentally demonstrated.
As the number of qubits grows, the probability distribution of coarse-grained states from imperfect measurements concentrates sharply around the maximally mixed state.
citing papers explorer
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The entangling power of non-entangling channels
Non-entangling channels amplify existing entanglement only if they generate it probabilistically, yielding a channel Schmidt number and witness-preserving dual maps that enable Bell-like detection of entanglement generation.
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General method for obtaining the energy minimum of spin Hamiltonians for separable states
A method is given to compute the minimum energy of certain spin Hamiltonians over separable states, expressed via quantum Fisher information for Ising models and fidelity for Heisenberg chains.
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Scalable protocol to coherence estimation from scarce data: Theory and experiment
A new optimization-based protocol estimates quantum coherence from scarce data with system-size-independent cost and is experimentally demonstrated.
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Detecting quantum many-body states with imperfect measuring devices
As the number of qubits grows, the probability distribution of coarse-grained states from imperfect measurements concentrates sharply around the maximally mixed state.