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quant-ph2025
What is special about the Kirkwood-Dirac distributions? Only they produce natural conditional expectations
Matéo Spriet, Christopher Langrenez, Raymond Brummelhuis +1
Among the many quasiprobability representations of quantum mechanics, the family of Kirkwood-Dirac (KD) representations has come to the foreground in recent years. Each such KD rep…
quant-ph2025★ 1 cited
The Kirkwood-Dirac representation associated to the Fourier transform for finite abelian groups: positivity
Stephan De Bièvre, Christopher Langrenez, Danylo Radchenko
We construct and study the Kirkwood-Dirac (KD) representations naturally associated to the Fourier transform of finite abelian groups . We identify all pure KD-positive states a…