Modeling and Simulation of Open Quantum Systems: Purified Pseudomode Approach and its Extensions

Accurate characterization of the environmental effects on a quantum system remains a fundamental challenge in the theory of open quantum systems. In this talk, I will introduce the purified pseudomode approach developed by us recently. This method allows for efficient modeling and numerically exact simulation of general linear-Gaussian baths. Extensions of this method to model bath input-output and nonlinear system-bath interactions will also be discussed.

Implementation of a Groundbreaking 12,900 km Ultra-secure Quantum Satellite Link Between South Africa and China

Quantum Key Distribution (QKD) has emerged as a revolutionary technology for secure communication, leveraging the principles of quantum mechanics to ensure unbreakable encryption. Recent advancements in space-based QKD have enabled global-scale secure communication by utilizing microsatellites as cost-effective and efficient platforms for key distribution. Here, we will be presenting our recent groundbreaking results on the first quantum satellite link implemented in the Southern Hemisphere and the longest intercontinental ultra-secure quantum satellite link of 12,900 km between South Africa and China.

Harvard Quantum Shorts Contest

In celebration of the International Year of Quantum Science and Technology, the Harvard Quantum Initiative invites students ages 14–19 to participate in an exciting global competition!

Create and submit a short video that explores a topic in quantum science—whether it’s quantum computing, entanglement, superposition, or any concept that inspires you. This is your chance to showcase your scientific insight, creativity, and passion for discovery.

Selected winners will receive an exclusive opportunity to visit Harvard’s cutting-edge quantum research facilities and meet world-class scientists.

Physics for Society: A New Colloquium Series by UNESCO and IUPAP

UNESCO and IUPAP are launching a new online colloquium series to explore how physics can drive positive change for society. This year’s theme: Quantum Science and Technology, aligned with the International Year of Quantum Science and Technology (IYQ 2025).

We are honored to open the series with Prof. Anne L’Huillier, 2023 Nobel Laureate in Physics, whose groundbreaking work in attosecond science reshaped our understanding of electron dynamics.

She will speak on:
– Attosecond light pulses in quantum science
– Her journey as a woman scientist in a frontier field

This interactive event will spark dialogue across disciplines and regions — from fundamental science to real-world impact.

Quantum PR: Build Your Brand, Build Your Business

In this IYQ year, a blizzard of announcements from quantum tech companies, both tech giants and startups, already has generated unprecedented interest from mainstream media, including top-tier business publications. Competition for media attention has grown, too, making it more important than ever to know how to work successfully to generate legitimate (read: non-hype), impactful media attention.

In any nascent industry, winners are often those committed to communicating their company’s story from its earliest days to its grandest achievements, building a narrative and brand over time that wins the hearts and minds of customers, partners, and investors.

HKA Marketing Communications, the official PR agency for IYQ, is committed to educating quantum tech companies on best practices in public relations most relevant to quantum tech.

The first webinar in our IYQ webinar series will be with Mike Kilroy, HKA EVP and a 30-year veteran of tech PR including the last 6 years at HKA working directly with global quantum tech companies.

Join Mike in a free one-hour Zoom webinar designed to help you understand the rules of media engagement and apply best practices that will contribute to your company’s success now and in the years to come.

The webinar is at 8:00 am PT/ 11:00 am ET

Birds of Science

Birds of Science is a collaborative art and science project in which participants craft origami birds from the pages of their scientific writings or their notebooks. These origami birds come together as they are created to form a breathtaking large-scale installation, symbolizing the knowledge, science, and the collective journey of ideas taking flight.

Birds of Science is created and directed by NCCR SPIN.

NCCR SPIN

Hidden Variables is a 3D art and science installation co-produced with young researchers at the NCCR SPIN in Switzerland. It was realized using discarded scientific data from theory or experimental equipment and measurements to highlight the important role of failure in the scientific journey.

Hidden Variables

What lies behind a single scientific breakthrough? A journey of trials and errors, ups and downs, successes and failures, and above all, an investment of time. At the intersection between art and science, a team of six dedicated quantum computing scientists comes to show you the hidden beauty within lost data and failed measurements – essential components in the pursuit of even the most subtle scientific insights.

Securing Global Networks in the Quantum Era – Satellite QKD

For a monthly talk of the 100th World & 50th Thai Quantum S&T Anniversary (#IYQ2025 #ThaiYQ2025), “Securing Global Networks in the Quantum Era – Satellite QKD” by Joanne Liao : Vice president – Strategic Development, SpeQtral, Singapore, will be highlighted right after Thai traditional new year or Songkran – water festival. Updating story of ASEAN pioneer for photon communications will be given by Spectral’ VP.

Superposition Composition: Grüße Unscharf

A durational sonic installation by ZKM | Hertzlab

The artwork—an installation featuring a self-playing piano that performs a composition by composer Jia Liu twice daily—makes audible the quantum mechanical principle of superposition. In quantum computing, superposition refers to the ability of quantum bits (qubits) to exist in multiple states simultaneously. Unlike classical bits, which always have a value of either 0 or 1, qubits can assume multiple states at once until their value is determined by measurement.

The composition includes variable elements that take on specific values based on certain probabilities. These values are recalculated for each performance using a quantum computer. Each playback thus represents a measurement, fixing the state of the composition. Only through repeated performances does the final composition emerge as a percentage-based probability pattern—this version will have its world premiere at ZKM | Karlsruhe in December 2025.
The composition will be performed twice daily (11 a.m. and 5 p.m.) on the music balcony of ZKM Karlsruhe from April to December 2025. A complementary data visualization will accompany the installation.

Public Measurements: Daily at 11 a.m. & 5 p.m. until December 2025