Jeongrak Son
@perp-waterfall.bsky.social
Last 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 !
September 9, 2025 at 6:55 AM
Last 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 !
It took us over a year to publish this, since we went through numerous revisions including significant strengthening of the results. The screenshot below is an excerpt from our reply to referees.
May 21, 2025 at 8:54 AM
It took us over a year to publish this, since we went through numerous revisions including significant strengthening of the results. The screenshot below is an excerpt from our reply to referees.
Thm.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).
April 4, 2025 at 9:25 AM
Thm.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).
We also compiled the list of theories with/without robust catalysis.
December 11, 2024 at 8:17 AM
We also compiled the list of theories with/without robust catalysis.
Another paper of the week! scirate.com/arxiv/2412.0...
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.
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.
December 11, 2024 at 8:10 AM
Another paper of the week! scirate.com/arxiv/2412.0...
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.
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.
Fourth paper of Marek's double-bracket quantum algorithms (DBQA) series (and the second one I'm participating in)!
A joint work with amazing collaborators: Marek Gluza, Bi Hong Tiang, Yudai Suzuki, @qzoeholmes.bsky.social , and @nellynghy.bsky.social
A joint work with amazing collaborators: Marek Gluza, Bi Hong Tiang, Yudai Suzuki, @qzoeholmes.bsky.social , and @nellynghy.bsky.social
December 9, 2024 at 9:30 AM
Fourth paper of Marek's double-bracket quantum algorithms (DBQA) series (and the second one I'm participating in)!
A joint work with amazing collaborators: Marek Gluza, Bi Hong Tiang, Yudai Suzuki, @qzoeholmes.bsky.social , and @nellynghy.bsky.social
A joint work with amazing collaborators: Marek Gluza, Bi Hong Tiang, Yudai Suzuki, @qzoeholmes.bsky.social , and @nellynghy.bsky.social
Other highlights of the paper:
1. The compiled algorithm retains all the good properties of QITE. The average energy of the state reduces proportionally to the variance of the energy (we call this fluctuation-refrigeration relation😉). The ground state infidelity reduces exponentially.
1. The compiled algorithm retains all the good properties of QITE. The average energy of the state reduces proportionally to the variance of the energy (we call this fluctuation-refrigeration relation😉). The ground state infidelity reduces exponentially.
December 9, 2024 at 9:25 AM
Other highlights of the paper:
1. The compiled algorithm retains all the good properties of QITE. The average energy of the state reduces proportionally to the variance of the energy (we call this fluctuation-refrigeration relation😉). The ground state infidelity reduces exponentially.
1. The compiled algorithm retains all the good properties of QITE. The average energy of the state reduces proportionally to the variance of the energy (we call this fluctuation-refrigeration relation😉). The ground state infidelity reduces exponentially.
Good news: our compilation is algorithmic, and we don't need variational methods, block encodings, etc.
December 9, 2024 at 9:22 AM
Good news: our compilation is algorithmic, and we don't need variational methods, block encodings, etc.