Quantum / CONCEPT
Noisy entanglement curvature can exceed quantum Fisher information
A two-qubit amplitude-damped probe starting at diag(1,11,3,1)/16 has smooth concurrence curvature 1 and quantum Fisher information 8/15 at t=1, kappa=log 2 and g=pi/4.
Closed
DIRECT PREREQUISITES2
DIRECT CONSEQUENCES0
PROOF DEPTH2
DOCUMENT LINKS0
Refutation at positive damping
RELATIONSHIP ATLAS
Every connection, in context.
Direct recorded relationships
Proof dependencyStructural affinityDocument link
Certified topology / UPSTREAM
Prerequisites
Certified topology / DOWNSTREAM
Consequences
None recorded in this release.
RELATED KNOWLEDGE
Structural connections
- Binegativity is not monotone under one-way LOCCstructural-affinity · Closed
- ConstructionReductionstructural-affinity · Closed
- Finite Record Conditioningstructural-affinity · Closed
- Negativity and structured negativity differ for a pure two-qutrit statestructural-affinity · Closed
- Non-cyclic periodic Fredkin eigenstates are annihilatedstructural-affinity · Closed
- Pronko's Dyck-class operator commutes with the periodic Fredkin Hamiltonianstructural-affinity · Closed
- Pronko's operators as finite anti-adjoint expansionsstructural-affinity · Closed
- The complementary W-state effect is not fully separablestructural-affinity · Closed
- The upper binegativity bound of Girard and Gour failsstructural-affinity · Closed
Documents & exposition
None recorded in this release.
Other authored & advisory relationships
None recorded in this release.
LIBRARY / RELEASE VERSIONS
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