Simulating Universal Quantum Gate Sets on Photonic OAM Qubits: Single-Qubit and Multi-Qubit Operations via Spatial Light Modulator Phase Holography

Researchers have successfully simulated universal quantum gate sets on photonic orbital angular momentum qubits using spatial light modulators, specifically the HOLOEYE LC 2012 transmitter. This breakthrough enables software-defined control over Laguerre-Gaussian beams, allowing for the implementation of single-qubit and multi-qubit operations via phase holography. The simulation and fidelity analysis demonstrate the feasibility of quantum gate operations on this platform, paving the way for advancements in quantum information processing. The use of spatial light modulators provides a reconfigurable and flexible approach to quantum computing, which is essential for the development of practical quantum systems. This development has significant implications for the field of quantum cryptography, as it narrows the timeline for cryptographic migration to post-quantum cryptography¹. So what matters to practitioners is that this research underscores the increasing urgency of planning for the transition to quantum-resistant cryptographic systems.