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2 votes
3 answers
1k views

Toffoli Gate Matrices

2 votes
2 answers
844 views

Density Matrix of 3 Qubit Quantum Circuit (Qiskit Density Matrix)

2 votes
1 answer
697 views

How to find the Kraus operators from the process matrix?

3 votes
1 answer
504 views

Cirq: n-qubit GHZ state

1 vote
1 answer
461 views

Understanding Hamiltonian's of the Single Qubit Gates and Toffoli gate

0 votes
1 answer
373 views

How to write the Kraus representation for many-qubit states?

1 vote
1 answer
351 views

Writing Toffoli Gate Matrix by one and two qubit gate matrices

1 vote
1 answer
263 views

Cirq-Measuring a State with Rotation Matrix

1 vote
1 answer
260 views

Producing $|ghz\rangle\langle ghz|$ State in Cirq

1 vote
1 answer
232 views

Is there any map between Phenomenological Noise Model and Circuit Based Noise Model?

0 votes
1 answer
222 views

Are quantum gates superoperators? How to write a quantum circuit as superoperator?

0 votes
2 answers
214 views

Qiskit's draw method is moves the gates on the qubit wires

1 vote
1 answer
210 views

Pymatching Toric Code vs Surface Code

0 votes
1 answer
209 views

Qiskit: Sum of Kraus operators are not equal to identity matrix

1 vote
2 answers
196 views

Why is the Measurement Result Always 1? (expected to find uniformly random measurement)

0 votes
1 answer
186 views

Pymatching, Parity Check Matrix with Syndrome Measurements and Detection Events

2 votes
1 answer
172 views

Qutip choi_to_kraus and to_kraus functions are not returning list of Kraus representation

2 votes
1 answer
158 views

From Hamiltonian to the Pulse Sequence

1 vote
1 answer
142 views

Bit Flip, Separable state and Several Question about Cirq

2 votes
1 answer
132 views

Design NISQ Circuit with StrawberryFields

1 vote
2 answers
126 views

What are the libararies for Machine Learning on NISQ Chip? And What are the roadmaps?

2 votes
1 answer
120 views

Can we write CNOT gate in terms of Quaternion?

1 vote
2 answers
116 views

How to Switch Toric Code to Surface Code (no using STIM!)

1 vote
0 answers
115 views

How is the third-order autocorrelation measured in quantum optics?

2 votes
1 answer
115 views

Cirq: Result of rotating qubit measurements never come [0 1] or [1 0 ], always come as [0,0] or [1,1]

1 vote
1 answer
113 views

is it possible to use STIM for non-clifford circuits?

0 votes
1 answer
110 views

Check_matrix in Pymatching and Understanding the Plot

2 votes
1 answer
99 views

Hadamard gate for qudit (dimesion 8)

1 vote
0 answers
80 views

How to show numerically that a subgroup of SU(2) and CNOT gate can give us a finite group?

0 votes
1 answer
77 views

Stim: Surface code with manipulated data qubits