Journal
PHYSICAL REVIEW A
Volume 103, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.103.022606
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Funding
- National Nature Science Foundation of China [11534008, 11804271, 91736104]
- Ministry of Science and Technology of China [2016YFA0301404]
- China Postdoctoral Science Foundation [2020M673366]
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The study successfully designed and implemented a deterministic Toffoli gate and generated Bell states using a controlled NOT gate. The effective conversion rate of the Toffoli gate in the experiment was found to be 95.1%, without the need for auxiliary photons and probabilistic postselections.
Quantum controlled-logic gates, including controlled NOT gate and Toffoli gate, play critical roles in lots of quantum information processing schemes. We design and experimentally demonstrate deterministic Toffoli gate by utilizing orbital-angular-momentum and polarization degrees of freedom of a single photon. In addition, we generate Bell states by using the controlled NOT gate. The effective conversion rate of the Toffoli gate in our experiment is (95.1 +/- 3.2)%. Furthermore, our experimental setup does not require any auxiliary photons and probabilistic postselections.
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