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Josh
  • Member for 2 years
  • Last seen more than a week ago
1 vote
2 answers
142 views

Definition of a quantum gate

3 votes
1 answer
299 views

How to visualize a qubit whose amplitudes have non-zero real and imaginary parts?

1 vote
2 answers
289 views

Why is a post-measurement state a valid quantum state?

2 votes
1 answer
63 views

Quantum Encryption Schemes

2 votes
2 answers
158 views

How should $\rho(b,b')$ be interpreted in the context of classical-quantum state

1 vote
2 answers
59 views

Clarification on the definition of cipherstate in the quantum one-time pad

3 votes
3 answers
304 views

Is verifying the solution to a QMA-complete problem efficient?

0 votes
1 answer
132 views

Do the parity matrices of $\text{CSS}(C_1, C_2)$ and $\text{CSS}_{u,v}(C_1, C_2)$ need to be same and the Number of Distinct Equivalent Descriptions?

2 votes
2 answers
105 views

How Does the Transformation $|x \rangle | 0 \rangle \rightarrow | x \rangle | Hx \rangle $ Avoid Violating the No-Cloning Theorem?

1 vote
1 answer
71 views

Derivations of Equations (12.205 - 12.207) in Nielsen Chuang

1 vote
1 answer
52 views

Derivation of Equation 10.69 in Nielsen Chuang

1 vote
0 answers
56 views

What do we mean by family of CSS codes?

3 votes
1 answer
76 views

Why is applying a Hadamard transform useful in the entanglement-based version of BB84

3 votes
1 answer
105 views

Why can the max-relative entropy be written as $D_{\max}(\rho \parallel \sigma) = \inf \{ \lambda : \rho \leq 2^\lambda \sigma \}$?

1 vote
1 answer
35 views

Does the max-relative entropy satisfy $0 < D_{\max}(\rho \parallel I_A \otimes \sigma_B) < 1$?

1 vote
1 answer
56 views

Prove that the conditional min-entropy is $H_{\rm min}(A|B)=\max_\sigma\sup\{\lambda:\,\rho\le 2^{-\lambda}(I\otimes\sigma)\}$

3 votes
1 answer
305 views

Comparison of Quantum Mutual Information and Coherent Information with Classical Mutual Information

2 votes
1 answer
869 views

Are there computational problems with classical advantage over quantum computing?

0 votes
1 answer
48 views

Grover's Algorithm - Diffusion Matrix [closed]

0 votes
1 answer
675 views

How to find initial quantum states from the density matrix?