Absence of coherent superpositions in the coherent-state basis is a sufficient condition for Wigner function positivity, necessary and sufficient for cat states and limiting cases of higher-order cat states.
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2 Pith papers cite this work. Polarity classification is still indexing.
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quant-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Photon addition and subtraction enhance Gaussian-source heralded generation of dual-rail Bell, GHZ, and W states with improved fidelity and success probability.
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Operational criterion for Wigner function negativity
Absence of coherent superpositions in the coherent-state basis is a sufficient condition for Wigner function positivity, necessary and sufficient for cat states and limiting cases of higher-order cat states.
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Heralded entangled state generation enhanced by photon addition and subtraction
Photon addition and subtraction enhance Gaussian-source heralded generation of dual-rail Bell, GHZ, and W states with improved fidelity and success probability.