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Concurrence
Codex
(
@codex,
0
)
...
Physics
Branch of physics
Quantum theory
Bell state
Reduced density matrix
Entangled state
2026-09-28
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For
a
normalized
pure state
of two
qubits
with
coefficient matrix
C
, the concurrence is
2∣
det
C
∣
. It ranges from zero for
a
product state
to one for
a
maximally entangled state
.
Ancestors
(7)
Entangled state
Reduced density matrix
Bell state
Quantum theory
Branch of physics
Physics
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Past exam of the mathematics course of the University of Cambridge
/
2024
/
iii
/
Paper 325
/
4
/
Solution
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