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.
152
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Displaying the circuit diagram associated to a circuit in Q#+Python
I am learning the Q# language, and my script is in Python (I am using the online Azure interface).
I created an example quantum circuit on three qubits:
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25
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DumpRegister sometimes blank?
I'm just getting into the baffling world of Quantum Computing so forgive me if this is straightforward...
I'm using Microsoft's Q# simulator so I know I'm allowed to peek into the internals of a Qubit ...
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How can I get the source code of “RUS” and “PQF”
Currently, I’m studying these two papers:
“Efficient Synthesis of Universal Repeat-Until-Success Circuits” and
“Efficient synthesis of probabilistic quantum circuits with fallback”.
I want the source ...
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57
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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:
<...
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1
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50
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Cannot import namespace from a Q# file to run it in a python script
I'm trying to run a Q# skript from python host. To do so I've installed qsharp package for python and followed all instructions as described under following link: https://learn.microsoft.com/de-de/...
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46
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Changing target Quantinuum Processor
I am trying to go through the Q# tutorial at https://learn.microsoft.com/en-us/training/modules/qsharp-create-first-quantum-development-kit/4-random-number-generator before I get my hands dirty and ...
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51
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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 ...
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40
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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?
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What is the data type "Unit is Adj" in Q#?
I came across it as the return type of operations in this paper: https://arxiv.org/abs/2204.13835. It is also used in various places in the Q# documentation.
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VS Code/Q#: No namespace with the name "Microsoft.Quantum.Canon" exists [closed]
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 ...
- 111
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43
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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 ...
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What's meaning of the expression like "Qubit[] => Result"
In Q#,there are lots of expressions like "Qubit[] => Result".
It can be the type of return result,like this:
...
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How to caculate the resources used by an operation when the operation receives arguments?
I want to use Q# to evaluate the real resources of an operation, but some problems happen.
I want to evaluate the resource of training model operation for the example of half-moons data classification....
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Where can I find the package of "testing" when run the Linear Algebra exercise of QuantumKatas?
I want to run the Linear Algebra tutorial exercise of QuantumKatas in vscode. But the package of "testing" can't be found. The package of "qsharp" and "pytest" have been ...
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126
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How to caculate the inner product of two vectors with Q#
For example, if $a$ is a row vector, $b$ is a column vector, how to use Q# to calculate the inner product of these two? Which method or operator can be used? Just $a*b$? Any others?
Really need your ...
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37
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Result and IQArray could not be found
I am following this MS tutorial to add functionality to my Q#/C#host project.
However, I get two errors on my operations:
...
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42
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Q# Application Template available for VS2022? [closed]
Implemented Grover Search Tutorial using Q# in VS2019.
Moved to Windows 11 and also installed VS2022.
Project opens and runs OK in VS2022.
However code has no intellisense and color. i.e. program.qs ...
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2
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129
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Implementing the Oracle in Grover
I need your expert opinions/comments on this problem.
Suppose I have a database (say 16 entries), such that db[0] = 0.12, db[1] = 0.84, db[2] = 0.55, ..., db[15] = 0.91. I want the oracle to mark ...
- 51
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79
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Q# Grover Tutorial Problem
Referring to the Q# tutorial on Grover algorithm in https://docs.microsoft.com/en-us/azure/quantum/tutorial-qdk-grovers-search?tabs=tabid-visualstudio, I replicated the code exactly in Visual Studio ...
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1
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56
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Missing types, namespaces, directives, and assembly references
I use VS Code for C# and Unity3D and TypeScript and <...
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233
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Q#/VS: No namespace with the name "Microsoft.Quantum.Canon" exists
I am trying to run a simple "Hello World" project in Q#, following this tutorial. I have completed the following steps (Step #s from tutorial link):
Step 1: Installed the latest version of ...
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3
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Which quantum computing frame is suitable for optimization problems?
As in the computer world, not all programming languages are suitable for everything.
Php = Backend
Javascript = Frontend
Data Analsys/ML = Python
embedded systems = C
Mobilphone/apps = Android / Swift
...
2
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110
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Passing arrays to operations/functions in Q# Jupyter Notebooks
In order to pass inputs to Q# operations/functions with Jupyter Notebooks, one uses the magic command, %simulate, and writes out the inputs as key-value pairs, <...
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115
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Q# install issue
I have followed the instructions to install Q# using conda as recommended, and given by MS. When I try to import qsharp from my virtual env within a Python program, ...
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2
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118
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Circuit to transform $|0\rangle$ into $\alpha|0\rangle + \beta|1\rangle$ for any $\alpha, \beta$
Hi I'm new to QC and doing some katas in Q#.
I got stuck on this excercise and would appreciate help:
Quantum circuit to get following state qubit: $\alpha|0\rangle + \beta|1\rangle$ when the input is ...
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136
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Things that I can compare between QDK and Qiskit
I am planning to write an article which compares QDK and Qiskit
Mainly talking about the different interfaces, and difference in running few algorithms
What all parameters should I compare and take ...
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1
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123
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Quantum Katas - Tutorials - Oracles - Task 3.3 (OR oracle of all bits except for a single bit)
Let $x$ be an arbitrary state composed of $N$ qubits and $k$ be an integer such that $0\leq k \leq N.$
The task is to ignore the $k$-th bit and to flip the sign of $x$ if any of the remaining bits are ...
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1
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49
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Quantum Katas - Tutorials - SingleQubitGates - Exercise 7 - Preparing an arbitrary state
Exercise 7 "Preparing an arbitrary state" from the Quantum Katas - Tutorials - SingleQubitGates asks to prepare a state $\alpha|0\rangle + e^{i\theta}\beta|1\rangle$, using parameters $\...
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2
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770
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Measuring entanglement entropy using a stabilizer circuit simulator
I'm trying to simulate stabilizer circuits using the Clifford tableau formalism that lets you scale up to hundreds of qubits. What I want to do is find the entanglement entropy on by splitting my ...
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184
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How to use QFT operation in Q#?
I see the QFT operation in the document given by Microsoft, but I don't know how to call it.
...
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93
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What all parameters can we take into account when comparing different quantum programming languages
I am planning to write a paper which compares Qiskit and Q# in the following circuits/algorithms
Bell circuits
Controlled swap to test similarity of two registers
Phase kickback between two qubits
...
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109
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Accessing tuple data in Q#
I am continuing my work on the SAT katas, but I thing I am missing something on the way the tuple data type works. In this example code, I am trying to access the data in a tuple type :
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219
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Take every second element of the array in Q#
Very quick question, I am trying to implement SAT solving in Q# using Grover's Algorithm. I want to take every second element from an array starting at the second element, represented with a range ...
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129
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Q# installation on Heroku
I'm trying to deploy a simple Quantum App written using Python on Heroku Server which is also using Microsoft's Q#, but getting the below error:
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217
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Q# Simulation Behavior
I am attempting to run a series of tests on a Q# program I'm running on the local simulator, but I'm not seeing any way to use >1 shot and collect the results of those shots at once, as in ...
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Q# Callable Not Accessible from Open Namespace
I am trying to to call ApplyMultiplyControlledAnd(), and I'm receiving an error saying "The callable ApplyMultiplyControlledAnd exists in an open namespace, ...
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135
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Braket and Q# Simulators
I have implemented Shor's algorithm in Qiskit, and everything works as expected within the IBM Q experience for both the IBM qasm_simulator and real hardware. However, after I've implemented Shors in ...
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2
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60
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Creating a resource count unit test in Q#
I want to create a unit test in Q# that runs an operation and asserts that it used at most 10 Toffoli operations. How do I do this?
For example, what changes do I have to make to the code below?
...
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137
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Correctly configuring a Q# test project in Visual Studio Code
I have some Q# code which I'm editing using visual studio code. The codebase is divided into a src/ folder and a test/ folder. ...
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294
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$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) ...
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107
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2
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309
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How to solve QUBO problems in Q#?
Short version:
I'm trying to solve a traveling salesman problem very similar to the traveling Santa example here: http://quantumalgorithmzoo.org/traveling_santa/, which is also included in the samples ...
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89
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How to get circuit run time in Q#
What is the best way to get the circuit run time in Q# ?
More precisely, I run a circuit using dotnet -run command and I would like to know how many time it took for running my circuit. Actually I ...
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Best way to test the performance of a simulated quantum algorithm in Q#
for a student report about solving graph coloring with Grover's Algorithm, I have to talk about the performance of simulated Grover's Algorithm to solve graph coloring. I don't really know how to ...
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213
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Different result between Q# and Qiskit
I'm running a search program with custom initial state. I wrote a program in Q# and one in Qiskit but I get different results even if the code seems to be peforming the same operations. The Q# result ...
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98
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Grover algorithm in Q#
I have this program derived from Microsoft Quantum Kata for quantum search (Grover algorithm) (see here)
...
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428
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Implement U2 and U3 gate in Q#
I know that U1 equivalent gate of Qiskit in Q# is R1, but I would like to implement U2 and U3 gate of Qiskit in Q#, what is the best way ?
Thank you.
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Run circuit N times in Q#
I use dotnet run command to run my .qs quantum circuit. Is there a way to run my circuit N times, and get results of each run (like the shots parameter in Qiskit) ?
Thank you.
- 409
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97
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How to implement quantum gate from matrix in Q#
Is it possible to implement a quantum gate from a matrix in Q#, the equivalent of unitary function in Qiskit ? My final goal is to implement cirq CZPowGate in Q#.
Thank you.
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How to get state vector probabilities in Q#
Is there a similare function in Q# like Statevector.probabilities in Qiskit to get state vector probability, for example, if my circuit contains one qubit with one $H$ gate, the function returns ...
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