Geometric analysis of entangled qubit pairs
Abstract
Two entangled electron spins, or qubits, are analysed in terms of ordinary three-dimensional space geometric properties, as are the angles between their angular momenta. This formulation allows concurrence, a measure of quantum entanglement, to be expressed as expectation values of trigonometric functions of the azimuthal angle between the two angular momenta.
- Publication:
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New Journal of Physics
- Pub Date:
- October 2011
- DOI:
- 10.1088/1367-2630/13/10/103037
- arXiv:
- arXiv:1110.0656
- Bibcode:
- 2011NJPh...13j3037R
- Keywords:
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- Quantum Physics;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- New J. Phys. 13, 103037 (2011)