Experimental Speedup of Quantum Dynamics through Squeezing
PRX Quantum American Physical Society (APS) 5:2 (2024) 020314
Optimized experiment design and analysis for fully randomized benchmarking
ArXiv 2312.15836 (2023)
Experimental speedup of quantum dynamics through squeezing
(2023)
Micromotion minimisation by synchronous detection of parametrically excited motion
(2021)
High-rate high-fidelity entanglement of qubits across an elementary quantum network
Physical Review Letters American Physical Society 124:11 (2020) 110501
Abstract:
We demonstrate remote entanglement of trapped-ion qubits via a quantum-optical fiber link with fidelity and rate approaching those of local operations. Two 88Sr+ qubits are entangled via the polarization degree of freedom of two spontaneously emitted 422 nm photons which are coupled by high-numerical-aperture lenses into single-mode optical fibers and interfere on a beam splitter. A novel geometry allows high-efficiency photon collection while maintaining unit fidelity for ion-photon entanglement. We generate heralded Bell pairs with fidelity 94% at an average rate 182 s−1 (success probability 2.18×10−4).