How to represent the state vector form of a qubit in density matrix representation?
133962
How to find a density matrix of a qubit?
38216
What would be the Slater's determinant representation for an excited state?
98535
Are eigenstates of the position operator continuous?
104055
How is the "normalisation" of non-normalizable states chosen?
155177
How do you write a differential operator as a matrix?
55106
Does the circuit with qubit-wise CZ gates compute the inner product of two states? If not, is there another circuit that does?
140426
Compute the output of the quantum teleportation circuit
130016
How to decompose a unitary transform into two-level unitary matrices?
106297
How do I show that a two-qubit state is an entangled state?
104140
Value of momentum of a particle in 1D box prepared in a particular state?
15577
Is the tensor product of two states commutative?
22538
Types of photon qubit encoding
137319
How is the joint state of these qubits derived?
90378
Coherent states of the form $|{-\alpha}\rangle$
13160
Can arbitrary matrices be decomposed using the Pauli basis?
135856
What is the physical representation of a qubit?
156423
Partition function containing QM?