Experimentally generating and tuning robust entanglement between photonic qubits

Abstract

We generate and study the entanglement properties of novel states composed of three polarisation-encoded photonic qubits. By varying a single experimental parameter we can coherently move from a fully separable state to a maximally robust W state, while at all times preserving an optimally robust, symmetric entanglement configuration. We achieve a high fidelity with these configurations experimentally, including the highest reported W state fidelity.

lower print quality for arxiv figures

References in corpus (3)

• Silica-on-Silicon Waveguide Quantum Circuits
• Experimental entanglement of six photons in graph states
• Experimental demonstration of Shor's algorithm with quantum entanglement