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Questions Tagged with "nielsen and chuang"

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How can the entropy of quantum states increase after projective measurements?

1 answer

Quantum Computing Asked 3 years ago by hongildong1

Are three POVM measurements on a single qubit physically realizable?

2 answer

Quantum Computing Asked 3 years ago by czwang

Nielsen & Chuang Theorem 2.6 Proof

1 answer

Quantum Computing Asked 3 years ago

In what sense are Pauli matrices measurement operators?

1 answer

Quantum Computing Asked 3 years ago

Nielsen & Chuang Exercise 2.32: Show that the tensor product of two projectors is a projector

1 answer

Quantum Computing Asked 3 years ago

Why is the subscript like this in the equation $sum_i |psi_irangle langlepsi_i| = sum_{ijk} u_{ij} u_{ik}^{*}|phi_jrangle langlephi_k|$?

1 answer

Quantum Computing Asked 3 years ago by Omar Hossam Ahmed

Quantum indistinguishability using density operators

1 answer

Quantum Computing Asked 3 years ago by Tristan Nemoz

Application of QFT to Order-finding

1 answer

Quantum Computing Asked 3 years ago

Why does $sum_n langle n|M_mrho M_m^dagger|nrangle$ simplify to $langle psi|M_m^dagger M_m|psirangle$?

1 answer

Quantum Computing Asked 3 years ago

Kraus decomposition for non trace preserving operation: shouldn't we have $0 leq sum_k E_k^{dagger} E_k leq I$

1 answer

Quantum Computing Asked 3 years ago

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