期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-05817-x
关键词
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资金
- National Key Research and Development Program of China [2017YFA0304100]
- National Natural Science Foundation of China [61327901, 11774335]
- Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-SLH003]
- Fundamental Research Funds for the Central Universities [WK2470000026]
- Anhui Initiative in Quantum Information Technologies [AHY020100]
- Horizon 2020 EU collaborative project QuProCS [641277]
- Magnus Ehrnrooth Foundation
- Academy of Finland [287750]
- University of Turku Graduate School (UTUGS)
Engineering, controlling, and simulating quantum dynamics is a strenuous task. However, these techniques are crucial to develop quantum technologies, preserve quantum properties, and engineer decoherence. Earlier results have demonstrated reservoir engineering, construction of a quantum simulator for Markovian open systems, and controlled transition from Markovian to non-Markovian regime. Dephasing is an ubiquitous mechanism to degrade the performance of quantum computers. However, all-purpose quantum simulator for generic dephasing is still missing. Here, we demonstrate full experimental control of dephasing allowing us to implement arbitrary decoherence dynamics of a qubit. As examples, we use a photon to simulate the dynamics of a qubit coupled to an Ising chain in a transverse field and also demonstrate a simulation of nonpositive dynamical map. Our platform opens the possibility to simulate dephasing of any physical system and study fundamental questions on open quantum systems.
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