Quantum Information
Meetup 2023

24 - 25 July 2023, Xiamen University Malaysia


We invite all specialists working on quantum information and technology in Malaysia. The goal of this informal meeting is to learn expertise currently present in the community. This will form a basis for coordinated efforts aimed at dedicated government support. All participants are asked to give a brief introduction followed by a presentation on their quantum technology research. This is a collective initiative open to all researchers in the field. If you cannot sponsor your participation at the moment please contact Tomasz Paterek for information on support. Additionally to talks we will have panels on prospective topics feasible in Malaysia, follow up discussions on forming MyQI consortium, industrial involvement, etc.

Event Speakers

Here are some of our speakers

Norshamsuri Ali

Iskandar Bahari

Sithi Vinayakam Muniandy

Raymond Ooi

Tomasz Paterek

Noorihsan Bin Mohamad

Jesni Bin Shamsul Shaari

Nurisya Mohd Shah

Buang Ann Tay

Yap Yung Szen

Event Program

Here is our event program

Building a superconducting quantum computer requires several key components: a quantum processor containing the qubits, a dilution refrigerator to cool down the qubits and a microwave system to control and read the state of the qubits. The microwave system sends pulses in the range of GHz to the qubits, made of Josephson junctions and parallel capacitive pads, located at the milliKelvin stage in the dilution refrigerator. In my talk, I will introduce on the work done in Rainer’s Dumke group at the Centre for Quantum Technologies (CQT), Singapore. I will first present our efforts in the quantum processor fabrication, where the transmon junctions are fabricated in-house. I will then talk about the development of our custom microwave control system which is based on the RFSoC FPGA and lastly, I will introduce some of our previous and more recent measurements.

When degeneracy occurs in non-Hermitian systems, their eigenvalues and eigenvectors could simultaneously coalesce at certain values of systems’ parameters. The points where degeneracy occurs are called exceptional points. In contrast to degeneracy in Hermitian systems, the Hamiltonians in non-Hermitian systems cannot be diagonalized at the exceptional points. They can at best be brought into a Jordan block form. The consideration can be carried over into the Liouvillians of open quantum systems. They are dissipative systems and the Liouvillians are non-Hermitian. We discuss our work on the structure of the exceptional points in the Liouvillian of continuous variable system for a harmonic oscillator. Then we discuss a recent experiment using a single trapped ion as quantum heat engine. When the heat engine encircles a Liouvillian exceptional point, it is shown that larger net work can be extracted from a bath. This heat engine makes use of an effective two-level Liouvillian exceptional point.

In this presentation, I will share the motivation and the objectives underlying the setting up of a dedicated interdisciplinary center for Quantum Information Science and Technology (QIST) at Universiti Malaya. While research in the field of quantum physics covering both fundamental questions and applications of quantum mechanics are scattered in various pockets of research groups or individuals, a different strategy is needed to capitalize on the spotlight cast upon quantum technologies in global perspective but projected on the local variables in Malaysian context. Such a strategic foresight is still lacking. This requires collaborative spirit and openness to knowledge sharing and talent diffusion. QIST@UM earmarked 4 areas or tracks for research enhancement, namely quantum computing and optimization, quantum communication and security, quantum sensing and qubit source. I will briefly mention the ongoing efforts along these tracks but intend to solicit collaborative prospects from consortium members of the Malaysia’s Quantum Initiative (MyQI) with similar or complementary expertise. Given the limited talent pool and preconditioned focus on critical national agenda by the major funding agencies in Malaysia, QIST@UM proposes strategic partnership among MyQI members in sourcing funds that benefit the members, while sending unequivocal message to the funding decision makers based on realistic foresight.

The field of group theory in physics has since played an important role and powerful mathematical tool in describing symmetry and transformations in various physical theories. One of the key to the well-established group theoretic method is known as the group representation theory. Interestingly, one of the current technologies that is essentially based on group symmetry is the quantum error correction (QEC). QEC in brief, is a technology that will protect a quantum state from noise and decoherence and thus has become one of the important features that is to improve the error threshold of fault-tolerant quantum computing. In this talk, we present our previous and ongoing work that involved group theory and the quest to properly understand group theoretic methods in quantum error correction.

The world is witnessing a quantum revolution, with advancements in quantum technologies poised to reshape industries and societies in unprecedented ways. As quantum capabilities expand, the need for coherent and forward-thinking policies becomes increasingly evident. Quantum global policy initiatives and landscape have emerged as crucial focal points, encompassing diverse efforts by nations and international organizations to navigate the challenges and opportunities presented by this transformative field. This brief presentation provides an insight into the dynamic interplay between technology, governance, and security on a global scale and explores the key thrusts and challenges of quantum policy initiatives.

Quantum cryptography is usually seen as the earlier more radical application of quantum mechanical postulates resulting from an intersection of interests in information theory and quantum mechanics. While this application has evolved to become more of an engineering problem, the quantum cryptographic enterprise can be seen not so much as one of application, rather a rephrasing of the relevant relations embodying fundamental principles, more specifically the uncertainty relations. In this talk, I briefly revisit some well-known basic entropic relations used in security proofs for prepare-and-measure schemes of quantum key distribution before presenting some novel entropic relations for other forms of quantum schemes. The latter include bidirectional quantum key distribution and quantum process tomography.

We extend study of the Jaynes-Cummings model involving a pair of identical two-level atoms (or qubits) interacting with a single mode quantised field. We investigate the effects of replacing the radiation field mode with a 'big spin’, comprising a collection of N qubits, or spin-1/2 particles. We demonstrate the similarities of this set-up to the qubits-field model in terms of the qubits state probability, occurrence of attractor states, generation of Schrodinger cat state, and in particular the collapse and revival of the entanglement between the two qubits in their subsystem. We extend our analysis by taking into account a decoherence effect due to qubit imperfections by considering non-resonance frequencies, and secondly we let the systems evolve with a difference in the dipole interaction strengths of the two qubits.

Quantum reservoir processing is a promising neuromorphic architecture where randomly coupled quantum nodes process input data and only mean excitation values are measured. This makes the platform experiment friendly and implementable in near future -- random coupling translates to tolerating imperfections in device manufacturing and simple measurements are always welcome. I will describe this platform in detail and show that even with small number of nodes one could address entanglement witnessing and estimation, quantum tomography or state preparation.

Event Venue

Event venue location information

Room G06, Block A5 Xiamen University Malaysia (XMUM).