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1

answer

40

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How can I understand the use of complex conjugate of density matrix but not complex conjugate transpose in the compute of concurrence?

entanglement density-matrix

answered 10 hours ago Niagara Falls 31

4

votes

1

answer

41

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Structural Physical Approximation of Partial Transpose

quantum-information entanglement mathematics quantum-operation

modified May 22 at 7:33 DaftWullie 16.7k

8

votes

2

answers

680

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How to show that an n-level system is entangled?

entanglement quantum-state qudit

modified May 17 at 14:23 Sanchayan Dutta 7,287

3

votes

1

answer

50

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Explicit 16⨯16 matrix representations of two-qudit entanglement witnesses

quantum-information entanglement qudit entanglement-witness

modified May 16 at 10:22 Paul B. Slater 291

5

votes

2

answers

554

views

How does evolving a two-qubit state through a CNOT gate entangle them?

quantum-gate quantum-state entanglement

modified May 15 at 16:45 glS 4,832

4

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1

answer

248

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How are witness operators physically implemented?

quantum-information entanglement physical-realization quantum-operation entanglement-witness

answered May 14 at 8:41 DaftWullie 16.7k

4

votes

1

answer

142

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Are entanglement witnesses of this form optimal?

quantum-information entanglement entanglement-witness

modified May 13 at 17:17 John Watrous 2,263

7

votes

1

answer

90

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Is there a relation between the factorisation of the joint conditional probability distribution and Bell inequality?

quantum-information entanglement density-matrix superposition

modified May 13 at 16:10 Sanchayan Dutta 7,287

4

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1

answer

71

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Does a 5-partite state with these entanglement properties exist?

quantum-state entanglement cryptography

modified May 10 at 21:28 cplusplusguru 21

9

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3

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208

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General construction of $W_n$-state

algorithm entanglement quantum-state

modified May 10 at 7:16 Mariia Mykhailova 2,290

2

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2

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110

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How does the probability of measurement turn out to be negative?

quantum-information entanglement density-matrix

modified May 9 at 10:31 Sanchayan Dutta 7,287

5

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1

answer

56

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Superoperator cannot increase relative entropy

quantum-information entanglement entropy

modified May 8 at 8:06 Sanchayan Dutta 7,287

3

votes

2

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47

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Proof of joint entropy theorem

quantum-information entanglement nielsen-and-chuang

answered May 7 at 7:18 DaftWullie 16.7k

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How can I understand the use of complex conjugate of density matrix but not complex conjugate transpose in the compute of concurrence?

Structural Physical Approximation of Partial Transpose

How to show that an n-level system is entangled?

Explicit 16⨯16 matrix representations of two-qudit entanglement witnesses

How does evolving a two-qubit state through a CNOT gate entangle them?

How are witness operators physically implemented?

Are entanglement witnesses of this form optimal?

Is there a relation between the factorisation of the joint conditional probability distribution and Bell inequality?

Does a 5-partite state with these entanglement properties exist?

General construction of $W_n$-state

How does the probability of measurement turn out to be negative?

Superoperator cannot increase relative entropy

Proof of joint entropy theorem

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