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This content will become publicly available on June 2, 2023

Title: Measurement-induced quantum phases realized in a trapped-ion quantum computer
Authors:
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Award ID(s):
2120757 1818914
Publication Date:
NSF-PAR ID:
10338081
Journal Name:
Nature Physics
ISSN:
1745-2473
Sponsoring Org:
National Science Foundation
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  1. Abstract

    Designing quantum algorithms for simulating quantum systems has seen enormous progress, yet few studies have been done to develop quantum algorithms for open quantum dynamics despite its importance in modeling the system-environment interaction found in most realistic physical models. In this work we propose and demonstrate a general quantum algorithm to evolve open quantum dynamics on quantum computing devices. The Kraus operators governing the time evolution can be converted into unitary matrices with minimal dilation guaranteed by the Sz.-Nagy theorem. This allows the evolution of the initial state through unitary quantum gates, while using significantly less resource than requiredmore »by the conventional Stinespring dilation. We demonstrate the algorithm on an amplitude damping channel using the IBM Qiskit quantum simulator and the IBM Q 5 Tenerife quantum device. The proposed algorithm does not require particular models of dynamics or decomposition of the quantum channel, and thus can be easily generalized to other open quantum dynamical models.

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