Timeline for range of the difference-of-two-qubit-$4 \times 4$-density-matrix-determinants
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| S Feb 19, 2014 at 2:00 | history | suggested | gaoxinge | CC BY-SA 3.0 |
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| Feb 19, 2014 at 1:46 | review | Suggested edits | |||
| S Feb 19, 2014 at 2:00 | |||||
| Feb 19, 2014 at 0:53 | comment | added | Nathaniel Johnston | The value of (determinant of state) - (determinant of partial transpose) can vary from 0 to (1/2)^4 when the state in question is pure (rank 1). There is a rank-3 state (the rank-3 projection onto the orthogonal complement of the Bell state) that achieves a value of -1/432. Numerics suggest that the lower bound -1/432 and the upper bound (1/2)^4 are optimal, but proving that may be difficult. | |
| Feb 18, 2014 at 20:24 | review | First posts | |||
| Feb 18, 2014 at 20:34 | |||||
| Feb 18, 2014 at 20:08 | history | asked | Paul B. Slater | CC BY-SA 3.0 |