Experimentally Measuring the Purity of a State without State Tomography

L.K. Shalm; R.B. Adamson; A. M. Steinberg

Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies
Technical Digest (CD) (Optica Publishing Group, 2005),
paper QThD4

Experimentally Measuring the Purity of a State without State Tomography

L.K. Shalm, R.B. Adamson, and A. M. Steinberg

Quantum Electronics and Laser Science Conference 2005

Baltimore, Maryland United States
22–27 May 2005
ISBN: 1-55752-770-9

From the session
Entanglement and Quantum Interference II (QThD)

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L. K. Shalm, R. B. Adamson, and A. M. Steinberg, "Experimentally Measuring the Purity of a State without State Tomography," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optica Publishing Group, 2005), paper QThD4.

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Abstract

We present an experiment that determines the purity of a state without the need for state tomography. We rely instead on a Bell-basis measurement on a pair of particles.

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