[195282] in North American Network Operators' Group
Testing methodology for the Chinese quantum satellite link?
daemon@ATHENA.MIT.EDU (Bill Woodcock)
Thu Jul 13 12:57:44 2017
X-Original-To: nanog@nanog.org
From: Bill Woodcock <woody@pch.net>
Date: Thu, 13 Jul 2017 09:57:37 -0700
To: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
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Does anyone who understands quantum networking better than I do have an =
opinion on the testing methodology that the Chinese team used to confirm =
entanglement? I guess, more specifically, my question is: when they say =
that they got 911 positive results out of =E2=80=9Cmillions=E2=80=9D of =
attempts, does this significantly exceed any expected false-positive =
rate for the confirmation methodology? If so, by what margin? =
Obviously, if you were just flipping coins, and measured the results =
once, you=E2=80=99d get 50% positive correlation, twice and you=E2=80=99d =
get 25% correlation, ten times and you=E2=80=99d get 0.1% correlation, =
and you=E2=80=99d be at 911 out of a million. So, how much better than =
that are we talking about?
-Bill
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