DpsAnchors

Tier A: WTY individual-attack DPS bound with pinned QBER

4/4 passed in 0ms

Test	What it does	Result
test_wty_domain_saturation	Past $e=6/38\approx 0.158$ the collision bound saturates (their Eq. 34) and the rate is 0, never negative.	✅ pass
test_wty_monotone_in_qber	The WTY rate decreases monotonically with QBER.	✅ pass
test_wty_multiphoton_penalty	$\mu \ge 1/2$ gives zero rate: Eq. (35)'s $(1-2\mu )$ photon-splitting concession.	✅ pass
test_wty_zero_error_limit	WTY at $e=0$: their Eq. (34) gives $P_{c0}=1/2$, so $R=p_{click}(1-2\mu )$ with $p_{click}=1-(1-d{)}^2{e}^{-\mu T\eta }$ for dark rate $d$.	✅ pass