Himai Minh

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since Jul 29, 2012
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Recent posts by Himai Minh

Topic : Landau Level Phases of Bilayer Graphene
Date: March 24 2024, Sunday 10:00 - Noon Eastern Daylight Time (America/New York)
Summary:
In addition to quantum computing, harnessing the quantum properties of electrons has historically led to advancements in classical computing as well. For example, in spintronics, giant magnetoresistance was essential for high-density data storage in magnetic hard disk drives. For these quantum degrees of freedom to be accessible, their energy scale must be smaller than that of the host material's band structure. One means to achieve this is through Landau quantization in two-dimensional materials. I will discuss this in the setting of bilayer graphene, which in addition to spin also hosts valley (momentum) and orbital degrees of freedom, and outline how to control the quantum degrees of freedom experimentally.

Speaker: Dr. Brett Greenearned his B.S. in Physics and in Mathematics from Montana State University in 2014 and his Ph.D. in Physics from Penn State University in 2022. His research so far can generally be characterized as either phase transitions in condensed matter or quantum information, and he is also interested in the classical physics of everyday systems and real and complex analysis.

Moderators : Pawel Gora, CEO of Quantum AI Foundation and Dr. Sebastian Zajac, member of QPoland
5 hours ago
Topic: Quantum Reliability: Circuit Susceptibility, Faults, and Integration Issues
Date: May 12 2024 Sunday 9:00 am - 11:00 am Eastern Daylight Time (America/New York)

Summary: Summary: Quantum computing is ushering in a transformative era in computation. The fundamental building blocks, qubits, exploit quantum physics to amplify computational parallelism and speed. Yet, these devices grapple with intrinsic noise and external factors like ionizing radiation, necessitating inventive strategies for enhanced reliability. Our presentation delves into vulnerabilities in current quantum technologies, exploring intrinsic noise with predictable effects and radiation-induced transient faults with unpredictable alterations to qubits. A focal point is the introduction of QuFI, the Quantum Fault Injector—an open-source tool designed to inject noise into quantum circuits for monitoring its propagation to the circuit output. QuFI serves as a valuable resource for scrutinizing the susceptibility of both qubits and circuits, identifying critical areas and primary sources of output corruption. As a case study, we showcase the application of QuFI to superconducting qubits, offering real-world insights into its efficacy. Additionally, we extend our exploration to the integration challenges of quantum computing with high-performance computing infrastructures. Our aim is to provide a comprehensive understanding of the prevailing reliability challenges in quantum computing, fostering further research and innovative solutions in this evolving field.

Speaker:
Dr. Edo Giusto, (IEEE and ACM member), received his B.S. degree in 2015, M.S. degree in 2017, and Ph.D. degree in 2021 from Politecnico di Torino, Italy. Currently, he holds the position of Assistant Professor in the Department of Electrical Engineering and Information Technology at the University of Naples Federico II, Italy. Previously, Dr. Giusto served as a visiting postdoc at the Superconducting Quantum Materials and Systems Center at Fermilab in Batavia, IL, US. This postdoctoral position was part of the Next Generation Internet Transatlantic Fellowship Program, funded by the European Commission under Horizon Europe. Dr. Giusto actively contributes to the field as a technical committee member for the IEEE QCE - Quantum Week conference and the IEEE CTSoc Quantum in Consumer Technology. His research interests revolve around quantum computing, encompassing applications of QC, problem mapping, and reliability and fault tolerance of QC devices, as well as the integration of QC in high-performance computing infrastructures.

Moderators: Pawel Gora, CEO of Quantum AI Foundation and Dr. Sebastian Zajac, member of QPoland
5 hours ago
Matheus,
You may want to try CrudRepository or JpaRepository interface in Spring Data JPA to delete your Assets.
Reference:
https://www.baeldung.com/spring-data-jpa-delete
I think this one:
spring.datasource.breakfast.driver-class-name=org.postgresql.Driver
should be replaced by
spring.datasource.driver-class-name=org.postgresql.Driver
2 weeks ago
Here is a discussion about the difference between dependency and plugin.
https://stackoverflow.com/questions/11881663/what-is-the-difference-in-maven-between-dependency-and-plugin-tags-in-pom-xml

Here is a quote from this disucssion:

Indeed some plugins may need to have some dependencies in the classpath during their execution. That is not common but that may happen.

Can you try some later versions of Lombok, such as version 1.18.2?

Reference https://www.baeldung.com/lombok-builder-default-value
1 month ago
Tim,
Yes. Deploying Spring Boot application to AWS for scalability is not dealing with the web server. But I think nowadays, deploying applications to the cloud is the way to handle a large number of requests.

I think deploying applications to web server is a small enterprise solution.
3 months ago
I think developers nowadays can deploy their applications to AWS instances in order to make the application more scalable, which means accepting many requests from users.
3 months ago
Or, you can create application-test.properties or yml file under a new folder called resources under test folder.
In the test code , add @TestPropertySource like this:


This way, the port from the application-test.properties or yml will be read.
3 months ago
First of all, the problem is your test cannot read the port number. I created a simple Spring Boot project that is similar to yours. The simplified version of my demo project is trying to isolate other irrelevant code.




In your src/main/resources/ folder, add this property to your application.properties or yaml file:
file-downloader.sftp.port=1234

I ran the FleDownloadControllerTest and the 1234 can be printed during the test.
3 months ago
The schema.sql is not required unless you want to customize how to build the tables.
Here is the tutorial:  https://www.baeldung.com/spring-boot-data-sql-and-schema-sql
3 months ago
If your computer has 8 cores and your application has 8 threads, each core will handle each thread.
There is no guarantee which thread will complete first , second , third and etc.
Is it because the other project is using Spring Boot 2 and it accepts java.persistence?