Algorithm calculates bond energies for quantum chemistry
Quantum computers are touted for application in the development of materials and drug discovery, resting on the idea they can better calculate properties such as bond energies. Researchers from CQT, A*STAR’s Institute of High Performance Computing (IHPC) and IBM Quantum have shown that even noisy intermediate-scale quantum (NISQ) computers can do this work.
When is reversal easy?
Imagine receiving a message that got scrambled on its way to you. To recover the original message, can you simply reverse the scrambling process? In a new paper published in PRX Quantum on 26 February 2024, CQT’s Clive Aw, Zaw Lin Htoo, Valerio Scarani and their collaborator Maria Balanzó-Juandó at ICFO – The Institute of Photonic Sciences in Spain find conditions where reversing a physical process should be easy. Where processes have a reverse “that can be implemented with the same, or similar, resources,” the researchers say these processes have “tabletop reversibility”.
CQT’s Patrick Rebentrost has received a grant from JPMorgan Chase’s Applied Research division to support his research “into novel quantum algorithms specifically in the area of quantum optimization.”
CQT and MajuLab’s Gong Jiangbin and Gabriel Lemarié and NUS Department of Physics’ Mu Sen link Kardar-Parisi-Zhang physics to the phenomenon of Anderson localisation.
Improved design better couples light from chip to fibre
Light can pass from a chip into optical fibre more efficiently, thanks to a novel coupling design from CQT’s Alexander Ling and Du Jinyi and their co-authors in Singapore and the United Arab Emirates. Their work reported in Optics Express could improve the performance of silicon photonic chips in quantum technologies.
Preprints
- A Witness of GHZ Entanglement Using Only Collective Spin Measurements
- Certification of genuine multipartite entanglement in spin ensembles with measurements of total angular momentum
- Coherent control of a superconducting qubit using light
- Direct measurement of coherent light proportion from a practical laser source
- Lower Bounds on Error Exponents via a New Quantum Decoder
- Efficient Creation of Ultracold Ground State 6Li40K Polar Molecules
- Synthesis of Energy-Conserving Quantum Circuits with XY interaction
- Tabletop Reversibility of Processes, and Product-Preserving Maps
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Centre for Quantum Technologies, NUS Science Drive 2 Block S15-03-18 Singapore 117543 |
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cqtsec@nus.edu.sg |
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+65 6516 2818 |
