{"id":23508614,"url":"https://github.com/vitormarquesr/qwalkr","last_synced_at":"2025-05-13T14:36:17.535Z","repository":{"id":193960705,"uuid":"667588236","full_name":"vitormarquesr/qwalkr","owner":"vitormarquesr","description":"qwalkr: Handle Continuous-Time Quantum Walks with R","archived":false,"fork":false,"pushed_at":"2023-10-08T00:21:47.000Z","size":642,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-01-25T01:05:33.720Z","etag":null,"topics":["linear-algebra","probability-theory","quantum-computing","quantum-walk","r","statistics"],"latest_commit_sha":null,"homepage":"https://vitormarquesr.github.io/qwalkr/","language":"R","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/vitormarquesr.png","metadata":{"files":{"readme":"README.Rmd","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null}},"created_at":"2023-07-17T21:20:12.000Z","updated_at":"2023-12-16T22:20:16.000Z","dependencies_parsed_at":"2023-09-11T02:19:51.934Z","dependency_job_id":"91822f65-5167-4698-80a5-6bb5cb35b6d2","html_url":"https://github.com/vitormarquesr/qwalkr","commit_stats":null,"previous_names":["vitormarquesr/qwalkr"],"tags_count":1,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vitormarquesr%2Fqwalkr","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vitormarquesr%2Fqwalkr/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vitormarquesr%2Fqwalkr/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/vitormarquesr%2Fqwalkr/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/vitormarquesr","download_url":"https://codeload.github.com/vitormarquesr/qwalkr/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":239187097,"owners_count":19596989,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["linear-algebra","probability-theory","quantum-computing","quantum-walk","r","statistics"],"created_at":"2024-12-25T11:24:16.668Z","updated_at":"2025-02-16T19:34:27.724Z","avatar_url":"https://github.com/vitormarquesr.png","language":"R","funding_links":[],"categories":[],"sub_categories":[],"readme":"---\noutput: github_document\n---\n\n\u003c!-- README.md is generated from README.Rmd. Please edit that file --\u003e\n\n```{r, include = FALSE}\nknitr::opts_chunk$set(\n  collapse = TRUE,\n  comment = \"#\u003e\",\n  fig.path = \"man/figures/README-\",\n  out.width = \"100%\"\n)\n```\n\n# qwalkr \u003ca href=\"https://vitormarquesr.github.io/qwalkr/\"\u003e\u003cimg src=\"man/figures/logo.png\" align=\"right\" height=\"139\" alt=\"qwalkr website\" /\u003e\u003c/a\u003e\n\n\u003c!-- badges: start --\u003e\n[![R-CMD-check](https://github.com/vitormarquesr/qwalkr/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/vitormarquesr/qwalkr/actions/workflows/R-CMD-check.yaml)\n[![Lifecycle: experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html#experimental)\n[![CRAN status](https://www.r-pkg.org/badges/version/qwalkr)](https://CRAN.R-project.org/package=qwalkr)\n[![Downloads](https://cranlogs.r-pkg.org/badges/qwalkr)](https://cran.r-project.org/package=qwalkr)\n\u003c!-- badges: end --\u003e\n\n## Overview \n\nqwalkr is a numerical suite for investigating quantum walks, providing estimates of matrices of interests that help you obtain insight into the evolution of such systems:\n\n**Quantum Walks**\n\n* `ctqwalk()` creates a continuous-time quantum walk.\n\n**Investigate the Hamiltonian**\n\n* `get_eigspace()` obtains the eigenvectors associated with an eigenspace.\n* `get_eigproj()` obtains the orthogonal projector associated with an eigenspace.\n* `get_eigschur()`obtains the Schur product of orthogonal projectors.\n* `act_eigfun()` applies a function to the Hamiltonian.\n\n**Time Evolution**\n\n* `unitary_matrix()` returns the unitary time evolution operator at a given time.\n* `mixing_matrix()` returns the mixing matrix at a given time.\n\n**Average Evolution**\n\n* `avg_matrix()` returns the average mixing matrix.\n* `gavg_matrix()` returns the generalized average mixing matrix under a probability distribution.\n\n## Installation\n\nYou can install the stable version of `qwalkr` from CRAN:\n\n```{r, eval=FALSE}\ninstall.packages(\"qwalkr\")\n```\n\nFor the development version, you can install from Github like so:\n\n```{r, eval=FALSE}\n# install.packages(\"devtools\")\ndevtools::install_github(\"vitormarquesr/qwalkr\")\n```\n\n## Usage\n\n```{r}\nlibrary(qwalkr)\n\nK3 \u003c- rbind(c(0, 1, 1),\n            c(1, 0, 1),\n            c(1, 1, 0))\n\nw \u003c- ctqwalk(hamiltonian = K3)\n\nw\n\n\nget_eigproj(w, id=2)\n\nunitary_matrix(w, t=pi/3)\n\nmixing_matrix(w, t=pi/3)\n\navg_matrix(w)\n\n```\n## Getting Help\n\nFor further reference on the usability, check the vignette or the website of the package.\n\nIf you happen to encounter a bug, please file an issue on GitHub.\n\n\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvitormarquesr%2Fqwalkr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fvitormarquesr%2Fqwalkr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fvitormarquesr%2Fqwalkr/lists"}