Quantum Computing Stack Exchange
Quantum Computing Stack Exchange

Questions tagged [q#]

Q# is a domain-specific programming language used to express quantum algorithms. This tag should be used for questions related to creating/programming quantum algorithms using the 'Q#' language. If the question is unrelated to, or arising from some non-quantum aspect of Q#, it might be better to ask on StackOverflow. If appropriate, also use the [programming] tag.

159 questions
4
votes
1 answer

Missing types, namespaces, directives, and assembly references

I use VS Code for C# and Unity3D and TypeScript and Angular and Python programming, so I have pretty much every required extension, including the .NET Framework and Core as well as the Quantum Development Kit (QDK) plus the Q# Interoperability Tools…
Muhy
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3
votes
1 answer

How can I transform a Result into a Bool in Q# + C# environment?

I'm writing a Q# program and I'm calling an operation defined in the program that outputs a Result (One or Zero). For example something like this: output = QuantumOperation.Run(sim).Result; I want to convert now output to a bool within C#, but I…
Eduardo González
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3
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2 answers

$S^{\dagger}$ gate in Q#

I would like to implement $S^{\dagger}$ gate in Q# and I would like the best way to do it, is it correct to say that $S^{\dagger}$ is equivalent to R1( -Pi()/2 , q) ? Is it also correct to say that $S^{\dagger}$ is equivalent to Rz( -Pi()/2 , q) but…
user12910
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3
votes
1 answer

Inner product of states in Q#

I have a state $|x\rangle$ and I want to get the expected result when measuring observable $A$ (i.e. get the result of $\langle x| A | x \rangle$). In my case $A$ can be any of the Pauli gates. Does anyone know how to do this in Q#? There doesn't…
Martin
  • 137
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2
votes
2 answers

Problems with Q# installing

I don't know if this is the right place to ask this question. I just thought it would be a place where people knew what they are doing. If there is a better place to look for answers (stackoverflow for example), feel free to tell me. The problem is…
BrockenDuck
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1
vote
1 answer

Is there a way to implement Smolin's variant of Shor's algorithm?

I'm currently investigating Shor's algorithm and especially Smolin's variant, that he described in his article: https://arxiv.org/abs/1301.7007 My applied changes according to Smolin's variant are…
SageCat
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1
vote
1 answer

Is there a way to measure a time spent for simulation? Does Q# support something like this?

I want to measure the time spent for simulation of different algorithms to make some assumption about their efficiency. I use Microsoft Azure Quantum SDK and VS Code setup.
SageCat
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1
vote
2 answers

How can I create an n-dimensional Hadamard transform in Q#?

I would like to create a n-dimensional Hadamard transform in Q# with n in set of even integers.
Mridul
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1
vote
1 answer

Change single qubit state in Q#

I am starting with Q# and I would like to know how can I get the following qubit state: 0.8|0⟩ + 0.2|1⟩ from a qubit initialized as |0⟩. Thanks in advance!
Antonio
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1
vote
1 answer

How to use ApplyToEach when operation has parameters?

Problem Apply a global phase -1 to all qubits x : Qubit[]. My solution ApplyToEach(R, PauliI, 2.0 * PI(), x) However this yields a syntax error. From the ApplyToEach doc, it works if the operation has no parameters: using (register = Qubit[3]) { …
peizhao
  • 113
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0
votes
0 answers

VSCode: System.DllNotFoundException when running Q# project

I am trying to set up my Q# environment in VSCode, yet I keep getting an error when running the boilerplate code. I have followed the instruction found here. The error I am getting is the following: Unhandled exception: System.DllNotFoundException:…
Giorgos Giapitzakis
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0
votes
0 answers

My First Own Grover Search with Q#

After I read the "[Quantum computing foundations](https://learn.microsoft.com/en-us/training/paths/quantum-computing-fundamentals/) of Microsoft I would like to be sure I understand a little the things. So, I code my own Groover search. The problem…
Cyrano
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0
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1 answer

How to create an arbitrary state for debugging purposes in the local computer?

Is there a way to create an arbitrary state in Q# just for debugging purposes in the local computer via the quantum full state simulator?
Fabio Dias
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0
votes
1 answer

VS Code/Q#: No namespace with the name "Microsoft.Quantum.Canon" exists

I am running the current latest version of Visual Studio Code on POP_OS (Ubuntu 22.04 LTS) and have installed all requirements to get Q# running on my machine: I have installed the SDK following Microsoft official guide to get it running on…
Matthias
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0
votes
1 answer

Is there any paper about the encoding process in the machine learning API?

I want to know more details about the encoding process in machine learning. I have read the source code about the "ApproximateInputEncoder" method. It seems like a complex method. So is there any paper or document to explain the mechanism in detail…
W.xueshan
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