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quantum-information-computing / Quantum information

The Quantum Pyramids Conjecture

Englert and Rehacek conjectured which measurement is globally information-optimal for an ensemble of equiangular equiprobable pure states. Their conjecture holds, via the remaining entropy inequalities of Holevo and Utkin.

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quantum-information-computingJun 12, 2026Significance 15/100Registry: unreviewed

The Quantum Pyramids Conjecture

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Englert and Rehacek conjectured which measurement is globally information-optimal for an ensemble of equiangular equiprobable pure states. Their conjecture holds, via the remaining entropy inequalities of Holevo and Utkin.

Source authenticatedThe Quantum Pyramids Conjecture →
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Englert and Rehacek conjectured which measurement is globally information-optimal for an ensemble of equiangular equiprobable pure states. Their conjecture holds, via the remaining entropy inequalities of Holevo and Utkin.

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