期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-04544-7
关键词
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资金
- CREST, JST [JPMJCR15N2, JPMJCR1675]
- ImPACT Program of Council for Science, Technology, and Innovation (Cabinet Office, Government of Japan)
- JSPS KAKENHI [26220710, 18H01819, 16H00817, 17H05187]
- RIKEN Incentive Research Projects
- PRESTO [JPMJPR16N3]
- JST
- Advanced Technology Institute Research Grant
- Murata Science Foundation Research Grant
- Izumi Science and Technology Foundation Research Grant
- TEPCO Memorial Foundation Research Grant
- Thermal and Electric Energy Technology Foundation Research Grant
- Telecommunications Advancement Foundation Research Grant
- Futaba Electronics Memorial Foundation Research Grant
- MST Foundation Research Grant
- Kato Foundation for Promotion of Science Research Grant
- Mercur [Pr2013-0001]
- BMBF Q.Com-H [16KIS0109, TRR160]
- DFH/UFA [CDFA-05-06]
- US ARO
- MURI Center for Dynamic Magneto-Optics via the AFOSR Award [FA9550-14-1-0040]
- JSPS (KAKENHI)
- IMPACT program of JST, CREST [JPMJCR1676]
- RIKEN-AIST Challenge Research Fund, JSPS-RFBR [17-52-50023]
- Sir John Templeton Foundation
- Grants-in-Aid for Scientific Research [16H00817, 17H05187] Funding Source: KAKEN
Quantum coherence of superposed states, especially of entangled states, is indispensable for many quantum technologies. However, it is vulnerable to environmental noises, posing a fundamental challenge in solid-state systems including spin qubits. Here we show a scheme of entanglement engineering where pure dephasing assists the generation of quantum entanglement at distant sites in a chain of electron spins confined in semiconductor quantum dots. One party of an entangled spin pair, prepared at a single site, is transferred to the next site and then adiabatically swapped with a third spin using a transition across a multi-level avoided crossing. This process is accelerated by the noise-induced dephasing through a variant of the quantum Zeno effect, without sacrificing the coherence of the entangled state. Our finding brings insight into the spin dynamics in open quantum systems coupled to noisy environments, opening an avenue to quantum state manipulation utilizing decoherence effects.
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