Sanchayan Dutta's user avatar
Sanchayan Dutta's user avatar
Sanchayan Dutta's user avatar
Sanchayan Dutta
  • Member for 5 years, 11 months
  • Last seen more than a month ago
4 votes
Accepted

Nielsen & Chuang Exercise 2.3 - “Matrix representation for operator products”

4 votes

Clarification needed for the N&C proof that BQP ⊆ PSPACE

4 votes
Accepted

Square root of CNOT and spectral decomposition of the Hadamard gate

4 votes
Accepted

Where is the factor of $-i$ in rotation gates coming from?

4 votes
Accepted

What does it mean to express a gate in Dirac notation?

4 votes

How to understand intuitively the concavity of the binary entropy?

4 votes

Does a quantum computer have a clock signal and if yes how big is it?

4 votes
Accepted

How does a single-qubit gate affect other qubits?

4 votes

Is quantum superposition state a truth or an assumption?

4 votes
Accepted

Matrix representation of multiple qubit gates (Hadamard transform on single wire)

4 votes
Accepted

How does quantum contextuality relate to mutually commuting observables?

4 votes

How to check if a two-qubit gate is entangling?

3 votes

Resources for quantum computing which do not use Dirac notation

3 votes

What is the spectral decomposition of the Pauli $X$ gate?

3 votes
Accepted

IBM QISKit: creating a variational algorithm from zero

3 votes

How to quickly calculate the custom U3 gate parameters $\theta, \phi$ and $\lambda$ for any unitary?

3 votes
Accepted

How does the cnx gate work in Qiskit (Python)?

3 votes

Resources to study quantum algorithms and quantum complexity

3 votes

Understanding the monogamy of entanglement with respect to GHZ States

3 votes
Accepted

Can you use Rz to flip from $|+\rangle$ to $|-\rangle$?

3 votes
Accepted

Why can we drop bits in front of the decimal in QFT?

3 votes
Accepted

How powerful would quantum computers be if we had direct access to the full state vector?

3 votes
Accepted

How are physical quantum chips made?

3 votes
Accepted

Example non-stabilizer code?

3 votes

Additive Codes: What are they? And how are they related to stabilizer codes?

3 votes
Accepted

Notation for two qubit composite product state

3 votes

How to prove teleportation does not violate no-cloning theorem?

3 votes
Accepted

What measures can be taken against attacks on cryptosystems by quantum computers other than just classifying research?

3 votes
Accepted

CNOT Gate on Entangled Qubits

3 votes
Accepted

Why do $n$ inputs to a ket give a vector of dimension $(2^n,1)$?