High-dimensional entanglement witnessed by correlations in arbitrary bases

التفاصيل البيبلوغرافية
العنوان: High-dimensional entanglement witnessed by correlations in arbitrary bases
المؤلفون: Li, Nicky Kai Hong, Huber, Marcus, Friis, Nicolai
سنة النشر: 2024
المجموعة: Quantum Physics
مصطلحات موضوعية: Quantum Physics
الوصف: Certifying entanglement is an important step in the development of many quantum technologies, especially for higher-dimensional systems, where entanglement promises increased capabilities for quantum communication and computation. A key feature distinguishing entanglement from classical correlations is the occurrence of correlations for complementary measurement bases. In particular, mutually unbiased bases (MUBs) are a paradigmatic example that is well-understood and routinely employed for entanglement certification. However, implementing unbiased measurements exactly is challenging and not generically possible for all physical platforms. Here, we extend the entanglement-certification toolbox from correlations in MUBs to arbitrary bases, even without requiring aligned reference frames. This represents a practically significant simplification that paves the way for the efficient characterization of high-dimensional entanglement in a wide range of physical systems.
Comment: 21 pages, 8 figures, 1 table
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2406.04395
رقم الأكسشن: edsarx.2406.04395
قاعدة البيانات: arXiv