University of Pennsylvania Demonstrates Single-Gate Parallel Entanglement on Room-Temperature Diamond Quantum Register

University of Pennsylvania researchers have achieved a breakthrough in quantum computing by demonstrating single-gate, parallelized multipartite entanglement on a room-temperature diamond quantum register. They successfully generated a four-qubit Greenberger–Horne–Zeilinger (GHZ) state in just 14.8 microseconds, a tenfold speedup over traditional methods, with significantly improved fidelity. This new approach, detailed in Nature Nanotechnology, converts inherent crosstalk into parallel conditional gates, offering a scalable template for future quantum technologies.

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