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Full-Text Articles in Quantum Physics
Constructing The Quantum Steering Ellipsoid Using State Measurement Of Biphotons, Carter Vanderbilt
Constructing The Quantum Steering Ellipsoid Using State Measurement Of Biphotons, Carter Vanderbilt
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This paper investigates a recently discovered geometric representation of two-qubit states, the Quantum Steering Ellipsoid, by exploring quantum state measurements on mixtures of polarization-entangled photons produced using spontaneous parametric down conversion (SPDC). Measurements of the second photon of a mixed biphoton system that are conditioned on observations of the first photon demonstrate all possible Bloch Vectors that the second photon can be collapsed to by way of ''steering,'' which is only possible due to the nonlocal nature of entangled systems. This paper examines methods to experimentally verify the Quantum Steering Ellipsoid as a geometric classification of quantum states.