五 01 一月 2021

• Research published: true

A collection of explanations of index terms in Quantum Error Correction. I either give reference or explain by my own.

writings by Daniel Gottesman

Matrix Product States (MPS)

wiki Tensor Networks, Matrix Product States and Density Matrix Renormalization Group

Category: alembic Published by ZWL

五 01 一月 2021

• Research feature_image: "/zwl_assets/lhcb-tree.png"

In classical information processing, the capacity-approaching codes can be constructed through lower-density-parity-check(LDPC) codes with random matrices. These include the protocols used in 4G and 5G technologies. Its quantum analog is a promising substitute for quantum topological code, where the former has finite code rate …

Category: alembic Published by ZWL

五 01 一月 2021

• Life published: true feature_text: | Toastmasters International is nonprofit educational organization focusing on public speaking and leadership. It has millions of clubs all over the world, including the US and China. I spent quite some time at a Chinese bilingual club in California. Now everything moves online and below is a …

Category: alembic Published by ZWL

五 01 一月 2021

• Events
• Research published: true

The Fifth International Conference on Quantum Error Correction (QEC’19) was hosted at London July 29th - Aug 2nd. Our group presented two of our recent works.

Here is a talk given by Prof Leonid Pryadko on Higher-dimensional quantum hypergraph-product & concatenated codes

{% include video.html id="xOWKyunFkUE …

Category: alembic Published by ZWL

五 01 一月 2021

• Events
• Research published: true excerpt: "Our group attended QIP 2020 at Shenzhen, China, with two posters"

The QIP 2020 will be hosted at Shenzhen. PDFs and videos are available here

Some observations:

• flag qubits for fault tolerant circuit. work by Rui Chao. link

• using QEC to protect quantum teleportation from …

Category: alembic Published by ZWL

五 01 一月 2021

• Research published: true excerpt: | Rules to build a quantum computer

In the past decades, an enormous amount of capital poured into the field of quantum computing, both from the government and the market. Though people doubt the reality and risk, it is true that the development of quantum computing has …

Category: alembic Published by ZWL

五 01 一月 2021

A home server it is.

Recently I got myself a raspberry Pi as a 'quarantine gift'. It is my first experience with chips or boards. It is a small kid with all the functions of a linux machine. I do encounter some difficulties like its poor audio with 3.5 …

Category: alembic Published by ZWL

五 01 一月 2021

• Study published: true feature_test: | More to learn excerpt: | My reading list

My reading list

• [ ] The Art of Computer Programming by Donald Knuth

Category: alembic Published by ZWL

五 01 一月 2021

• Research feature_image: "https://www.mdpi.com/universe/universe-05-00179/article_deploy/html/images/universe-05-00179-g009.png"

It is a complicated task to find optimal ways of designing a quantum circuit. Here I discuss some handy techniques to reduce the size of a circuit, including utilizing additional ancilla qubits and modifing order of gates …

Category: alembic Tagged: research Published by ZWL

五 01 一月 2021

• News published: true

In spring 2020, I am teaching 4 discussion sessions for 40B (general physics)

It is still before my first session. To be ready, I spent sometime to learn the softwares.

First, as a tradition, the class uses masteringphysics to handle assignment and grading. It is an eletronic …

Category: alembic Published by ZWL