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Towards a complete and continuous Wigner function for an ensemble of spins or qubits

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journal contribution
posted on 31.01.2013, 16:34 by Derek Harland, Mark Everitt, Kae Nemoto, Todd Tilma, T.P. Spiller
We present a new quasi-probability distribution function for ensembles of spin-half particles or qubits that has many properties in common with Wigner's original function for systems of continuous variables. We show that this function provides clear and intuitive graphical representation of a wide variety of states, including Fock states, spin-coherent states, squeezed states, superpositions and statistical mixtures. Unlike previous attempts to represent ensembles of spins/qubits, this distribution is capable of simultaneously representing several angular momentum shells.

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  • Science

Department

  • Physics

Citation

HARLAND, D. ... et al, 2012. Towards a complete and continuous Wigner function for an ensemble of spins or qubits. Physical Review A - Atomic, Molecular, and Optical Physics, 86 (6), 062117.

Publisher

© American Physical Society

Version

VoR (Version of Record)

Publication date

2012

ISSN

1050-2947

eISSN

1094-1622

Language

en

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