Table 2.

The Holevo variance for different schemes

Symmetric entanglement	Multipass	Adaptive measurement	V H
✓	✓	✓	0.5278
✓	✓	✓	0.5497(7) (Exp.)
✓	✗	✓	0.556926
✗	✓	✓	0.5609
✓	✓	✗	0.6547
✗	✗	✗	0.7778
✗	✗	✗	0.7870(7) (Exp.)