All Questions
Tagged with textbook-and-exercises qiskit
45
questions
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Is qiskit.pulse.SamplePulse deprecated?
I'm currently following along the book "Learn Quantum Computing with Python and IBM Quantum Experience" by Rodert Loredo and I am at chapter 8 - Generating pulse schedules on hardware. The ...
1
vote
1
answer
158
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How to calculate probability of measuring $|1\rangle$ after application of $R_x$ gate
I was trying to understand how to calculate
the probability of measuring $|1\rangle$ when executing the following circuit in Qiskit:
...
- 145
-1
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1
answer
114
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Unitary matrix knowing input and ouput states
Input: n qubits after H gates.
Output, after measure: the n different bit strings of length 2^n with just one 1, with same probabilities.
Or said differently:
Input state |phi0>=(1,1,...1)/2^n
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2
votes
2
answers
470
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Why adding H-gate is referred as changing the basis of measurement?
I study Qiskit. When I measure a qubit by including qc.measure(qb,cb) instruction, I measure it in the computational basis. But if I apply the Hadamard gate adding <...
- 177
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254
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Understanding the Bernstein-Vazirani implementation from the qiskit website
My question is with regards to the implementation from the Qiskit textbook.
From my understanding the algorithm is for finding out what an unknown bit-string is which in the classical case requires N ...
- 11
3
votes
2
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897
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How to choose a suitable number of iterations for Grover's algorithm?
In Nielsen and Chuang (2010), section 6.1.1. it is written:
"For an N item search problem with M solutions, it turns out that we need only apply the search oracle ...
- 51
2
votes
3
answers
278
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Quantum computing coding setup for a beginner
I want to dive into Quantum computing but I don’t have a personal computer for coding. I have an iPad and I know some quantum computing basics. I had earlier used IBM quantum experience (IBM’s cloud ...
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318
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About swap gate [closed]
As I was reading Qiskit textbook and there is this problem ... How can I swap a $|+\rangle$ to a $|-\rangle$
Qiskit textbook --> Basic Circuit Identities
- 143
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Construct the unitaries U by decomposition in TSP Qiskit? [duplicate]
I'm stuck in here and really don't understand this stuff. In order to construct the unitary matrices for Quantum Phase Estimation, Qiskit decomposes the diagonal unitary matrices U(j) by tensor ...
0
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1
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590
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Accuracy of Quantum Phase estimation; Finding the max difference integer, e
Working through Lab 5 in the Qiskit text, I have been attempting to complete Part 1, Step B. I implemented the following code as it seemed, at the time, to be what the question was asking for:
...
- 472
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405
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Is there a tutorial for error mitigation in qiskit that does not use the deprecated ignis?
Working through the qiskit text I have come accross measurement error mitigation a few times (Measurement Error Mitigation, Lab 3: Quantum Measurment,...]. In the online textbook the coding indicates ...
- 472
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234
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How to initialize my circuit with two random complex numbers?
Working through Lab 3 in the Qiskit text, I have been attempting to initialize my one qubit circuit with two random numbers. My first attempt, as directed, is using ...
- 472
3
votes
1
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588
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Jupyter Notebook not rendering latex code
Working through the Qiskit text and came across this bit of coding on the density matrix page:
psi_AB.draw('latex', prefix='|\\psi_{AB}\\rangle = ')
which is ...
- 472
0
votes
1
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189
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Which protocol does the Qiskit textbook use for Quantum Key Distribution?
I've worked through a couple different protocols for quantum key distribution, but when I look at the Qiskit textbook on this page I am unable to determine which one was used in this lesson. If anyone ...
- 472
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119
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Implementing deutsch_problem(seed=None) and deutsch() from qiskit text
I'm attempting to work through the exercise at the end of https://learn.qiskit.org/course/ch-gates/phase-kickback#phase-8-0 where I am to build and implement Deutsch's algorithm. I understand that <...
- 472