573 citations
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Showing 2023 · quant-phShow all
3 papers · 2 filters
quant-ph2023★ 28 cited
Quantifying the imaginarity of quantum states via Tsallis relative entropy
Jianwei Xu
It is a fundamental question that why quantum mechanics uses complex numbers instead of only real numbers. To address this topic, recently, a rigorous resource theory for the imagi…
quant-ph2023★ 29 cited
Imaginarity of Gaussian states
Jianwei Xu
It has been a long-standing debate that why quantum mechanics uses complex numbers but not only real numbers. To address this topic, in recent years, the imaginarity theory has bee…
quant-ph2023★ 3 cited
Quantifying the phase of quantum states
Jianwei Xu
Phase is a basic ingredient for quantum states since quantum mechanics uses complex numbers to describe quantum states. In this letter, we introduce a rigorous framework to quantif…