ArticleNature communications2023
Quantum simulation of thermodynamics in an integrated quantum photonic processor.
Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- No-Signaling in Steepest Entropy Ascent: A Nonlinear, Non-Local, Non-Equilibrium Quantum Dynamics of Composite Systems Strongly Compatible with the Second Law.Entropy (Basel, Switzerland) · 2025Article
- Typical thermalization of low-entanglement states.Communications physics · 2025Article
- Learning quantum states of continuous-variable systems.Nature physics · 2025Article
- Review
- Quantum simulation of thermodynamics in an integrated quantum photonic processor.Nature communications · 2023Article
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Authors and funding
19 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
One of the core questions of quantum physics is how to reconcile the unitary evolution of quantum states, which is information-preserving and time-reversible, with evolution following the second law of thermodynamics, which, in general, is neither. The resolution to this paradox is to recognize that global unitary evolution of a multi-partite quantum state causes the state of local subsystems to evolve towards maximum-entropy states. In this work, we experimentally demonstrate this effect in linear quantum optics by simultaneously showing the convergence of local quantum states to a generalized Gibbs ensemble constituting a maximum-entropy state under precisely controlled conditions, while introducing an efficient certification method to demonstrate that the state retains global purity. Our quantum states are manipulated by a programmable integrated quantum photonic processor, which simulates arbitrary non-interacting Hamiltonians, demonstrating the universality of this phenomenon. Our results show the potential of photonic devices for quantum simulations involving non-Gaussian states.
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