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Klaus Mølmer

Macroscopic entanglement in many-particle quantum states

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DOI

  • Malte C. Tichy
  • ,
  • Chae Yeun Park, Seoul National University
  • ,
  • Minsu Kang, Seoul National University
  • ,
  • Hyunseok Jeong, Seoul National University
  • ,
  • Klaus Mølmer

We elucidate the relationship between Schrödinger-cat-like macroscopicity and geometric entanglement and argue that these quantities are not interchangeable. While both properties are lost due to decoherence, we show that macroscopicity is rare in uniform and in so-called random physical ensembles of pure quantum states, despite possibly large geometric entanglement. In contrast, permutation-symmetric pure states feature rather low geometric entanglement and strong and robust macroscopicity.

OriginalsprogEngelsk
Artikelnummer042314
TidsskriftPhysical Review A
Vol/bind93
Nummer4
Antal sider13
ISSN2469-9926
DOI
StatusUdgivet - 11 apr. 2016

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