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The Szilard Engine presented the iconic example that related information theory and thermodynamics. In this engine, it was shown that when a demon is supplied with a 'blank tape' to record information, he could use it as a resource to do work. Here, we looked at what happens to such a demon when he is ... Read moreQuantifying memory capacity as a quantum thermodynamic resource (Phys. Rev. Lett. 122, 060601)

We know from prior works that quantum models have an advantage when it comes to generating predictions, using less memory than all classical counterparts. This was first done in the context of processes that output symbols at discrete points in time. Subsequently similar advantages were discovered processes that can emit only a single symbol, but ... Read moreMemory-efficient tracking of complex temporal and symbolic dynamics with quantum simulators (New Journal of Physics 21, 013021)

There are many notions of complexity and structure. In computational mechanics, for example, the complexity of a stochastic process can be characterized by how much information one must store about its past to general future statistical predictions faithfully. Meanwhile, in quantum any body systems, a prominent measure of complexity is in the amount of information ... Read moreMatrix Product States for Quantum Stochastic Modelling (Phys. Rev. Lett. 121, 260602)

Photons in the quantum realm behave very differently from the classical light experienced in our everyday lives. The concept of nonclassicality—one of the most influential ideas of twentieth-century quantum physics—draws a boundary between these two regimes. Nonclassical light is also a valuable resource, underpinning exciting technologies that exploit the peculiarities of quantum physics, including ultrasensitive ... Read moreOperational Resource Theory of Continuous-Variable Nonclassicality (Phys. Rev. X 8, 041038)

Coherence and Discord are often thought as two distinct measures of non-classicality. The former a measure of non-classicality for single particles, the latter one for correlations. In this work, we designed an engineered experiment that illustrated how these resources can be inter-converted into each other. Experimental Cyclic Interconversion between Coherence and Quantum Correlations Kang-Da Wu, Zhibo ... Read moreExperimental Cyclic Interconversion between Coherence and Quantum Correlations (Physical review letters 121, 5, 050401)