An Integrated Bell-State Analyzer on a Thin Film Lithium Niobate Platform

• URL: http://arxiv.org/abs/2105.01199v1
• Date: Mon, 3 May 2021 22:36:45 GMT
• Title: An Integrated Bell-State Analyzer on a Thin Film Lithium Niobate Platform
• Authors: Uday Saha, Edo Waks
• Abstract summary: Trapped ions are excellent candidates for quantum computing and quantum networks because of their long coherence times. We design a photonic Bell-state analyzer on a reconfigurable thin film lithium niobate platform for polarization-encoded qubits.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Trapped ions are excellent candidates for quantum computing and quantum networks because of their long coherence times, ability to generate entangled photons as well as high fidelity single- and two-qubit gates. To scale up trapped ion quantum computing, we need a Bell-state analyzer on a reconfigurable platform that can herald high fidelity entanglement between ions. In this work, we design a photonic Bell-state analyzer on a reconfigurable thin film lithium niobate platform for polarization-encoded qubits. We optimize the device to achieve high fidelity entanglement between two trapped ions and find >99% fidelity. The proposed device can scale up trapped ion quantum computing as well as other optically active spin qubits, such as color centers in diamond, quantum dots, and rare-earth ions.

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