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Questions Tagged with "quantum state" (Page 2)

Explore solved questions tagged with "quantum state" or help others by answering their unsolved questions related to "quantum state".

Is the restriction of a strictly contractive channel (SCC) to a subspace necessarily still SCC? (impossibility of perfect QEC for SCCs)

1 answer

Quantum Computing Asked 3 years ago

How is a bit field represented in Quantum Computing?

2 answer

Quantum Computing Asked 3 years ago by Mrcreamio

Are Bell states distinguishable through LOCC?

2 answer

Quantum Computing Asked 3 years ago

How to find the reduced density matrix of a four-qubit system?

2 answer

Quantum Computing Asked 3 years ago

Show that $I = frac{rho + sigma_xrhosigma_x +sigma_yrhosigma_y + sigma_zrhosigma_z}{2}$ for all states $rho$

7 answer

Quantum Computing Asked 3 years ago by evethompson123

How is it possible to guess what state the qubit was in by measuring it?

3 answer

Quantum Computing Asked 3 years ago

Calculate probability of a state after depolarization

2 answer

Quantum Computing Asked 3 years ago

SWAP specific phase components of two qubits

1 answer

Quantum Computing Asked 3 years ago by virattara

How to create the logical $|0_Lrangle$ state for the Steane's 7-qubit code?

2 answer

Quantum Computing Asked 3 years ago

What separable $rho$ only admit separable pure decompositions with more than $mathrm{rank}(rho)$ terms?

1 answer

Quantum Computing Asked 3 years ago

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