Strings, black holes, the tripartite entanglement of seven qubits, and the Fano plane

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44 Citations (Scopus)

Abstract

Recently it has been observed that the group E7 can be used to describe a special type of quantum entanglement of seven qubits partitioned into seven tripartite systems. Here we show that this curious type of entanglement is entirely encoded into the discrete geometry of the Fano plane. We explicitly work out the details concerning a qubit interpretation of the E7 generators as representatives of tripartite protocols acting on the 56-dimensional representation space. Using these results we extend further the recently studied analogy between quantum information theory and supersymmetric black holes in four-dimensional string theory. We point out that there is a dual relationship between entangled subsystems containing three and four tripartite systems. This relationship is reflected in the structure of the expressions for the black hole entropy in the N=4 and N=2 truncations of the E7(7) symmetric area form of N=8 supergravity. We conjecture that a similar picture based on other qubit systems might hold for black hole solutions in magic supergravities.

Original languageEnglish
Article number024024
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number2
DOIs
Publication statusPublished - 2007

Fingerprint

Fano plane
Qubit
Entanglement
Black Holes
strings
Strings
Supergravity
supergravity
Quantum Information Theory
Discrete Geometry
Quantum Entanglement
information theory
String Theory
Truncation
string theory
Analogy
Subsystem
generators
Entropy
Generator

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

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