Quantum Circuits assisted by LOCC: Transformations and Phases of Matter

• URL: http://arxiv.org/abs/2103.13367v4
• Date: Thu, 11 Nov 2021 13:52:52 GMT
• Title: Quantum Circuits assisted by LOCC: Transformations and Phases of Matter
• Authors: Lorenzo Piroli, Georgios Styliaris, J. Ignacio Cirac
• Abstract summary: We introduce deterministic state-transformation protocols between many-body quantum states which can be implemented by low-depth Quantum Circuits (QC) followed by Local Operations and Classical Communication (LOCC) We show that this gives rise to a classification of phases in which topologically-ordered states or other paradigmatic entangled states become trivial.
• Score: 0.7734726150561088
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We introduce deterministic state-transformation protocols between many-body quantum states which can be implemented by low-depth Quantum Circuits (QC) followed by Local Operations and Classical Communication (LOCC). We show that this gives rise to a classification of phases in which topologically-ordered states or other paradigmatic entangled states become trivial. We also investigate how the set of unitary operations is enhanced by LOCC in this scenario, allowing one to perform certain large-depth QC in terms of low-depth ones.

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