Ping Koy Lam

Quantum enhancement of signal-to-noise ratio for arbitrary coherent states using heralded linear amplifiers

2017

We present an experimental enhancement of signal-to-noise ratio for arbitrary coherent states using a noise-reduced linear amplifier that profitably combines a heralded measurement-based noiseless linear amplifier and a deterministic linear amplifier. The concatenation of two …

Near-Optimal Parameter Tuning of Level-1 QAOA for Ising Models

2026 · Quantum

The Quantum Approximate Optimisation Algorithm (QAOA) tackles combinatorial optimisation problems by encoding their solutions into the ground state of an Ising Hamiltonian prepared by a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>p</mml:mi> </mml:math> -level parameterised circuit, with the angles …