3 papers
quant-ph2025
The strength of weak coupling
Alastair Kay, Christino Tamon
A paradoxical idea in quantum transport is that attaching weakly-coupled edges to a large base graph creates high-fidelity quantum state transfer. We provide a mathematical treatme…
quant-ph2025
Matrix Inversion by Quantum Walk
Alastair Kay, Christino Tamon
The HHL algorithm for matrix inversion is a landmark algorithm in quantum computation. Its ability to produce a state that is the solution of , given the input st…
quant-ph2025
Optimising Perfect Quantum State Transfer for Timing Insensitivity
Alastair Kay, Sooyeong Kim, Christino Tamon
When studying the perfect transfer of a quantum state from one site to another, it is typically assumed that one can receive the arriving state at a specific instant in time, with…