PhD student @ NTU Singapore Quantum Information and Thermodynamics https://jeongrak-son.github.iohttps://bsky.app/profile/perp-waterfall.bsky.socialhttps://bsky.app/profile/perp-waterfall.bsky.social/post/3lyf57rfwwc23Last week I defended my thesis "Quantum Qomrades: Catalysts in Resource Theories and Memories in Dynamic Programming". This journey was possible thanks to all my human comrades, especially my amazing adviser @nellynghy.bsky.social !09 Sep 2025 06:55 +0000at://did:plc:eq6bsmuwhbziorf2ea6pv53p/app.bsky.feed.post/3lyf57rfwwc23https://bsky.app/profile/perp-waterfall.bsky.social/post/3lumk6momfc26This is actually the first no-go result for robust catalysis (i.e. catalytic transformations that are catalytic even with small state preparation noise) outside completely resource non-generating operations. Next step: robust catalysis in LOCC or stabiliser operations?🥴🥴 [contains quote post or other embedded content]23 Jul 2025 07:55 +0000at://did:plc:eq6bsmuwhbziorf2ea6pv53p/app.bsky.feed.post/3lumk6momfc26https://bsky.app/profile/perp-waterfall.bsky.social/post/3lpoa326ujs22Our paper (w/ Marek, @ryujitakagi.bsky.social, @nellynghy.bsky.social ) on Quantum Dynamic Programming has recently been published in PRL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.180602 Xin Yi from CQT wrote a great highlight article for this paper: https://www.cqt.sg/highlight/2025-05-dynamic-programming-quantum/21 May 2025 08:54 +0000at://did:plc:eq6bsmuwhbziorf2ea6pv53p/app.bsky.feed.post/3lpoa326ujs22https://bsky.app/profile/perp-waterfall.bsky.social/post/3lly3wepa3k2yThm.2 is derived from Eq. (16), which I am particularly fond of. This equation shows that any linear combination of a Hermitian matrix and the identity can be applied to a quantum state exactly and deterministically (given one can synthesise the exponential of a commutator). [contains quote post or other embedded content]04 Apr 2025 09:25 +0000at://did:plc:eq6bsmuwhbziorf2ea6pv53p/app.bsky.feed.post/3lly3wepa3k2yhttps://bsky.app/profile/perp-waterfall.bsky.social/post/3lczclhsihc2wAnother paper of the week! https://scirate.com/arxiv/2412.06900 In resource theories, catalysis provides many amazing advantages. However, it turns out that whenever there is system preparation error, most of them stop being catalytic. Fret not! We introduced a new class that is robust under such errors.11 Dec 2024 08:10 +0000at://did:plc:eq6bsmuwhbziorf2ea6pv53p/app.bsky.feed.post/3lczclhsihc2whttps://bsky.app/profile/perp-waterfall.bsky.social/post/3lcufmcoids25New preprint on arXiv! https://scirate.com/arxiv/2412.04554 Quantum imaginary-time evolution (QITE) is amazing, but its compilation is not straightforward. We found an iterative way of doing this, using the equivalence of QITE and double-bracket flows.09 Dec 2024 09:21 +0000at://did:plc:eq6bsmuwhbziorf2ea6pv53p/app.bsky.feed.post/3lcufmcoids25