Tootfinder

A More Convex Ising Formulation of Max-3-Cut Using Higher-Order Spin Interactions
Robbe De Prins, Guy Van der Sande, Peter Bienstman, Thomas Van Vaerenbergh
https://arxiv.org/abs/2508.00565

A More Convex Ising Formulation of Max-3-Cut Using Higher-Order Spin Interactions
Many combinatorial optimization problems (COPs) are naturally expressed using variables that take on more than two discrete values. To solve such problems using Ising machines (IMs) - specialized analog or digital devices designed to solve COPs efficiently - these multi-valued integers must be encoded using binary spin variables. A common approach is one-hot encoding, where each variable is represented by a group of spins constrained so that exactly one spin is in the "up" state. However, this …

Photonic processor benchmarking for variational quantum process tomography
Vladlen Galetsky, Paul Kohl, Janis N\"otzel
https://arxiv.org/abs/2507.08570

Photonic processor benchmarking for variational quantum process tomography
We present a quantum-analogous experimental demonstration of variational quantum process tomography using an optical processor. This approach leverages classical one-hot encoding and unitary decomposition to perform the variational quantum algorithm on a photonic platform. We create the first benchmark for variational quantum process tomography evaluating the performance of the quantum-analogous experiment on the optical processor against several publicly accessible quantum computing platforms,…