User heromano

8 votes

2 answers

2k views

How can one argue that the $S$-gate is Clifford while $T$-gate is not?

asked Feb 22, 2021 at 3:45

8 votes

3 answers

576 views

If a Hamiltonian is quadratic in the ladder operator, why is its time evolution linear in the ladder operator?

asked Mar 13, 2021 at 22:05

5 votes

1 answer

1k views

Which states can reached using single-qubit Clifford gates?

asked Mar 3, 2021 at 7:33

5 votes

3 answers

2k views

Why is the transpose of a density matrix positive and trace preserving?

asked Feb 8, 2021 at 19:50

4 votes

3 answers

188 views

Why does joint ground state not change under action of beam splitting unitary operator?

asked Mar 14, 2021 at 4:36

4 votes

1 answer

1k views

Logical bit-flip and Phase-flip operators of Shor’s 9-qubit code

asked Mar 31, 2021 at 18:45

4 votes

2 answers

720 views

Fermionic occupation operator and nearest neighbor Fermionic hopping interaction as a qubit operator

asked Mar 11, 2021 at 19:34

3 votes

1 answer

309 views

How can I construct a universal transformation using Clifford+T gates? [duplicate]

asked Mar 3, 2021 at 7:46

2 votes

1 answer

360 views

How can one argue that the partial transpose $\rho^{T_B}$ of a general separable state is positive?

asked Feb 11, 2021 at 5:23

2 votes

1 answer

715 views

Fermionic commutation relation using Jordan-Wigner transformation

asked Mar 14, 2021 at 21:54

2 votes

1 answer

245 views

Adiabatic Quantum Computer e intermediate Hamiltonian evolves the state within the manifold

asked Mar 20, 2021 at 8:03

1 vote

1 answer

666 views

In Shor’s 9-qubit code, is the error syndrome for qubit 5 phase-flip the same as that for qubit 6 phase-flip?

asked Apr 2, 2021 at 0:13

1 vote

1 answer

276 views

Is there an easy way to calculate the eigenvalues of the partial transpose of a given matrix? [duplicate]

asked Feb 15, 2021 at 7:23

1 vote

3 answers

569 views

How to prove that the transpose operation maps an arbitrary qubit to its complex conjugate?

asked Feb 28, 2021 at 6:38

1 vote

1 answer

266 views

What is the logarithmic Negativity of the Werner state? [closed]

asked Feb 10, 2021 at 22:46

-1 votes

1 answer

311 views

How do I calculate the eigenvalues of the positive partial transpose of this two-qubit state?

asked Feb 10, 2021 at 7:02

-1 votes

2 answers

533 views

Error syndrome on logical operators

asked Apr 6, 2021 at 5:21

-1 votes

1 answer

323 views

Reduced density matrix of the ensemble of two-qubit state that is possessed by Alice and Bob

asked Apr 6, 2021 at 5:31

Stack Exchange Network

18 Questions

How can one argue that the $S$-gate is Clifford while $T$-gate is not?

If a Hamiltonian is quadratic in the ladder operator, why is its time evolution linear in the ladder operator?

Which states can reached using single-qubit Clifford gates?

Why is the transpose of a density matrix positive and trace preserving?

Why does joint ground state not change under action of beam splitting unitary operator?

Logical bit-flip and Phase-flip operators of Shor’s 9-qubit code

Fermionic occupation operator and nearest neighbor Fermionic hopping interaction as a qubit operator

How can I construct a universal transformation using Clifford+T gates? [duplicate]

How can one argue that the partial transpose $\rho^{T_B}$ of a general separable state is positive?

Fermionic commutation relation using Jordan-Wigner transformation

Adiabatic Quantum Computer e intermediate Hamiltonian evolves the state within the manifold

In Shor’s 9-qubit code, is the error syndrome for qubit 5 phase-flip the same as that for qubit 6 phase-flip?

Is there an easy way to calculate the eigenvalues of the partial transpose of a given matrix? [duplicate]

How to prove that the transpose operation maps an arbitrary qubit to its complex conjugate?

What is the logarithmic Negativity of the Werner state? [closed]

How do I calculate the eigenvalues of the positive partial transpose of this two-qubit state?

Error syndrome on logical operators

Reduced density matrix of the ensemble of two-qubit state that is possessed by Alice and Bob