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我国取得量子研究重大进展 世界首次实现高维度量子隐形传态
On the basis of theoretical innovation, Pan Jianwei research team developed high stability/multi-channel/path interference technology, pioneered the experiment of multi-photon/multi-dimension/interaction, successfully realized Quantum teleportation in high dimensions, and strictly proved the non-classical and high-dimensional characteristics of the process.
After years of research, Chinese scientists have successfully realized Quantum teleportation in high dimensions for the first time in the world, laying a solid scientific foundation for the development of efficient quantum networks. Recently, the international authoritative academic journal Physical Review Express published this latest research result and called it "a milestone in the field of quantum communication."
https://arxiv.org/ftp/arxiv/papers/1906/1906.09697.pdf
https://arxiv.org/abs/1906.09697
Quantum Physics
Quantum teleportation in high dimensions
Yi-Han Luo, Han-Sen Zhong, Manuel Erhard, Xi-Lin Wang, Li-Chao Peng, Mario Krenn, Xiao Jiang, Li Li, Nai-Le Liu, Chao-Yang Lu, Anton Zeilinger, Jian-Wei Pan
(Submitted on 24 Jun 2019 (v1), last revised 2 Aug 2019 (this version, v2))
Precise measurement or perfect cloning of unknown quantum states is forbidden by the laws of quantum mechanics. Yet, quantum teleportation in principle allows for a faithful and disembodied transmission of unknown quantum states between distant quantum systems using entanglement. There have been numerous experiments on teleportation of quantum states of single photons, atoms, trapped ions, defects in solid states, and superconducting circuits. However, all demonstrations to date were limited to a two-dimensional subspace−so-called qubit−of the quantized multiple levels of the quantum systems. In general, a quantum particle can naturally possess not only multiple degrees of freedom, but also, many degrees of freedom can have high quantum number beyond the simplified two-level subspace. Here, making use of multiport beam-splitters and ancillary single photons, we propose a resource-efficient and extendable scheme for teleportation of arbitrarily high-dimensional photonic quantum states. We report the first experimental teleportation of a qutrit, which is equivalent to a spin-1 system. Measurements over a complete set of 12 states in mutually unbiased bases yield a teleportation fidelity of 0.75(1), well above the optimal single-copy qutrit-state-estimation limit of 1/2. The fidelity also exceeds the limit of 2/3, the maximum possible for explanation through qubits only. Thus, we strictly prove a genuine three-dimensional, universal, and highly non-classical quantum teleportation. Combining previous methods of teleportation of two-particle composite states and multiple degrees of freedom, our work provides a complete toolbox for teleporting a quantum particle intact. We expect that our results will pave the way for quantum technology applications in high dimensions, since teleportation plays a central role in quantum repeaters and quantum networks.
Comments: 23 pages, 12 figures, the version accepted by Physical Review Letters on 22nd July. The previous version was first submitted to a journal on 19th May
Subjects: Quantum Physics (quant-ph)
Cite as: arXiv:1906.09697 [quant-ph]
(or arXiv:1906.09697v2 [quant-ph] for this version)
Submission history
From: Chao-Yang Lu [view email]
[v1] Mon, 24 Jun 2019 03:06:54 UTC (1,552 KB)
[v2] Fri, 2 Aug 2019 02:05:58 UTC (1,606 KB)
Which authors of this paper are endorsers? | What is MathJax?)
News link: With my knowledge of English, I can't translate it.
https://new.qq.com/omn/TEC20190/TEC2019081800344300.html
On the basis of theoretical innovation, Pan Jianwei research team developed high stability/multi-channel/path interference technology, pioneered the experiment of multi-photon/multi-dimension/interaction, successfully realized Quantum teleportation in high dimensions, and strictly proved the non-classical and high-dimensional characteristics of the process.
After years of research, Chinese scientists have successfully realized Quantum teleportation in high dimensions for the first time in the world, laying a solid scientific foundation for the development of efficient quantum networks. Recently, the international authoritative academic journal Physical Review Express published this latest research result and called it "a milestone in the field of quantum communication."
https://arxiv.org/ftp/arxiv/papers/1906/1906.09697.pdf
https://arxiv.org/abs/1906.09697
Quantum Physics
Quantum teleportation in high dimensions
Yi-Han Luo, Han-Sen Zhong, Manuel Erhard, Xi-Lin Wang, Li-Chao Peng, Mario Krenn, Xiao Jiang, Li Li, Nai-Le Liu, Chao-Yang Lu, Anton Zeilinger, Jian-Wei Pan
(Submitted on 24 Jun 2019 (v1), last revised 2 Aug 2019 (this version, v2))
Precise measurement or perfect cloning of unknown quantum states is forbidden by the laws of quantum mechanics. Yet, quantum teleportation in principle allows for a faithful and disembodied transmission of unknown quantum states between distant quantum systems using entanglement. There have been numerous experiments on teleportation of quantum states of single photons, atoms, trapped ions, defects in solid states, and superconducting circuits. However, all demonstrations to date were limited to a two-dimensional subspace−so-called qubit−of the quantized multiple levels of the quantum systems. In general, a quantum particle can naturally possess not only multiple degrees of freedom, but also, many degrees of freedom can have high quantum number beyond the simplified two-level subspace. Here, making use of multiport beam-splitters and ancillary single photons, we propose a resource-efficient and extendable scheme for teleportation of arbitrarily high-dimensional photonic quantum states. We report the first experimental teleportation of a qutrit, which is equivalent to a spin-1 system. Measurements over a complete set of 12 states in mutually unbiased bases yield a teleportation fidelity of 0.75(1), well above the optimal single-copy qutrit-state-estimation limit of 1/2. The fidelity also exceeds the limit of 2/3, the maximum possible for explanation through qubits only. Thus, we strictly prove a genuine three-dimensional, universal, and highly non-classical quantum teleportation. Combining previous methods of teleportation of two-particle composite states and multiple degrees of freedom, our work provides a complete toolbox for teleporting a quantum particle intact. We expect that our results will pave the way for quantum technology applications in high dimensions, since teleportation plays a central role in quantum repeaters and quantum networks.
Comments: 23 pages, 12 figures, the version accepted by Physical Review Letters on 22nd July. The previous version was first submitted to a journal on 19th May
Subjects: Quantum Physics (quant-ph)
Cite as: arXiv:1906.09697 [quant-ph]
(or arXiv:1906.09697v2 [quant-ph] for this version)
Submission history
From: Chao-Yang Lu [view email]
[v1] Mon, 24 Jun 2019 03:06:54 UTC (1,552 KB)
[v2] Fri, 2 Aug 2019 02:05:58 UTC (1,606 KB)
Which authors of this paper are endorsers? | What is MathJax?)
News link: With my knowledge of English, I can't translate it.
https://new.qq.com/omn/TEC20190/TEC2019081800344300.html
