Emergence of Constructor-based Irreversibility in Quantum Systems: Theory and Experiment

• URL: http://arxiv.org/abs/2009.14649v2
• Date: Fri, 18 Jun 2021 15:19:39 GMT
• Title: Emergence of Constructor-based Irreversibility in Quantum Systems: Theory and Experiment
• Authors: Chiara Marletto, Vlatko Vedral, Laura Knoll, Fabrizio Piacentini, Ettore Bernardi, Enrico Rebufello, Alessio Avella, Marco Gramegna, Ivo Pietro Degiovanni, Marco Genovese
• Abstract summary: We show that irreversibility in a universe with time-reversal-symmetric laws is compatible with quantum theory's time reversal symmetric laws. We exploit a specific model, based on the universal quantum homogeniser, realised experimentally with high-quality single-photon qubits.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The issue of irreversibility in a universe with time-reversal-symmetric laws is a central problem in physics. % , and, in particular, to statistical mechanics, information theory and quantum thermodynamics. In this letter, we discuss for the first time how irreversibility can emerge within the recently proposed constructor theory framework. Here irreversibility is expressed as the requirement that a task is possible, while its inverse is not. In particular, we demonstrate that this irreversibility is compatible with quantum theory's time reversal symmetric laws, by exploiting a specific model, based on the universal quantum homogeniser, realised experimentally with high-quality single-photon qubits.

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