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Past exam of the mathematics course of the University of Cambridge
/
2022
/
iii
/
Paper 323
/
5
/
b
/
Solution
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Past exam of the mathematics course of the University of Cambridge
2022
iii
Paper 323
5
b
2026-09-28
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For the
pure state
σ
RQE
induced by
a
purification and
Stinespring dilation
, the
coherent information
is
I
c
(
Λ
,
ρ
)
=
S
(
σ
Q
)
−
S
(
σ
E
)
=
−
H
(
R
∣
Q
)
σ
.
(1)
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(11)
b
5
Paper 323
iii
2022
Past exam of the mathematics course of the University of Cambridge
Mathematics course of the University of Cambridge
Course of the University of Cambridge
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