Experimental Test of Tracking the King Problem
| Autor: | Zeng-Quan Yan, Zhu Cao, Jun Gao, Lu-Feng Qiao, Hao Tang, Ruo-Jing Ren, Zhi-Hao Ma, Cheng-Qiu Hu, Zhi-Qiang Jiao, Xian-Min Jin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Quantum Physics
Multidisciplinary Uncertainty principle Computer science Science Counterintuitive Probabilistic logic FOS: Physical sciences Quantum entanglement 01 natural sciences Classical physics Outcome (game theory) Physics::History of Physics 010305 fluids & plasmas 0103 physical sciences Retrodiction Calculus Quantum Physics (quant-ph) 010306 general physics Quantum information science Physics - Optics Optics (physics.optics) Research Article |
| Zdroj: | Research Research, Vol 2019 (2019) |
| ISSN: | 2639-5274 |
| Popis: | In quantum theory, the retrodiction problem is not as clear as its classical counterpart because of the uncertainty principle of quantum mechanics. In classical physics, the measurement outcomes of the present state can be used directly for predicting the future events and inferring the past events which is known as retrodiction. However, as a probabilistic theory, quantum-mechanical retrodiction is a nontrivial problem that has been investigated for a long time, of which the Mean King Problem is one of the most extensively studied issues. Here, we present the first experimental test of a variant of the Mean King Problem, which has a more stringent regulation and is termed "Tracking the King". We demonstrate that Alice, by harnessing the shared entanglement and controlled-not gate, can successfully retrodict the choice of King's measurement without knowing any measurement outcome. Our results also provide a counterintuitive quantum communication to deliver information hidden in the choice of measurement. Comment: 16 pages, 5 figures, 2 tables |
| Databáze: | OpenAIRE |
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