## QIP 2021

QIP 2021, The 24th Annual Conference on Quantum Information Processing, is going to take place online. Submit your papers by November 20th here.

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# Author: Ion Nechita

## QIP 2021

## SudoQ – a quantum variant of the popular game

## RTNI – A symbolic integrator for Haar-random tensor networks

## Random quantum measurements

## Master’s internship

## The joint distribution of marginals of multipartite random quantum states

## Counting meanders

## Bipartite unitary operators and quantum Latin squares

## Quantum Information semester in Paris, autumn 2017

## Seoul lectures on some applications of random matrices to quantum information theory

QIP 2021, The 24th Annual Conference on Quantum Information Processing, is going to take place online. Submit your papers by November 20th here.

Continue readingTogether with Jordi Pillet, who was doing his master’s internship last year at the LPT, we have a new paper, introducing a quantum version of the Sudoku game. Sudoku puzzles can now be found in many newspapers and have become part of the popular culture. Numerous mathematical results have been

Continue readingTogether with Motohisa Fukuda and Robert König we have a new paper (and some code!) RTNI – A symbolic integrator for Haar-random tensor networks. This is a very unusual paper for me: the main goal here is not to prove theorems but to introduce a piece of software we developed:

Continue readingWe have a new paper together with Teiko Heinosaari and Maria Anastasia Jivulescu: Random positive operator valued measures. We introduce and analyze different models of random quantum measurements (POVMs). We prove that two very natural procedures for generating random POVMs are actually identical and then we analyze in detail the

Continue readingIf you are looking for an internship for your Master’s studies and would like to work with me on block random matrices, non-commutative Sinkhorn scaling algorithms, quantum incompatibility, random density matrices, or any other topic in random matrix theory or quantum information theory, write me an email. There is the

Continue readingTogether with Stephane Dartois and Luca Lionni, we have a new preprint on the arXiv, On the joint distribution of the marginals of multipartite random quantum states. The paper is about the joint distribution of the set of (twisted) marginals of random multipartite quantum states. We study mainly random Wishart

Continue readingWe have, with Moto Fukuda, a new paper on the arXiv, Enumerating meandric systems with large number of components, which deals with the enumeration of meandric systems. In combinatorics, a meander on $2n$ points is a closed, self-avoiding plane curve, which intersects a given line $2n$ times. Below, the meanders

Continue readingTristan Benoist and I have just arXived our paper On bipartite unitary matrices generating subalgebra–preserving quantum operations. We characterize the set of bipartite unitary operators which give quantum operations preserving some subalgebra of the state space, independently of the state of the coupled environment. The main results in the paper

Continue readingI am one of the organizers of a 3-month semester on quantum information theory ad the Institut Henri Poincaré in Paris. Among other events, there will be a one-week workshop on Probabilistic techniques and Quantum Information Theory, Oct 23-27. Please register if you are interested in attending.

Continue readingLast week, at the invitation of Hun Hee Lee, I gave a series of three lectures on some applications of random matrix theory to problems in quantum information theory. The notes are available here. After discussing the Marchenko–Pastur theorem, I present my result with Teo Banica on partial transposition of

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