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arXiv · 2510.24275

Quantum evolution with classical fields

Christof Wetterich
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Abstract

Wave guides for classical electromagnetic fields can realize the discrete quantum evolution of the wave function for a system of qubits. Phase shifts, switches and beam splits allow for the construction of arbitrary quantum gates. They can act at once on a large number of qubits. For this correlation based photonic quantum computer the channels of the wave guides represent basis states of a multi-qubit system rather than individual qubits. With probabilistic initial conditions for a large number of channels the classical fields in wave guides realize the density matrix for a probabilistic quantum computer obeying the von Neumann equation.

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Christof Wetterich. 2025-10-28. Quantum evolution with classical fields. https://arxiv.org/abs/2510.24275

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