Coherent energy manipulation in single-neutron interferometry

Sponar, Stephan; Klepp, Jürgen; Loidl, Rudolf; Filipp, Stefan; Badurek, G.; Hasegawa, Yuji; Rauch, H.

doi:10.1103/physreva.78.061604

Cited by 31 publications

(58 citation statements)

References 26 publications

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“…For further investigations of entanglement of DOFs, it is essential to development methods to manipulate other DOFs: the use of interaction between neutron's spin and a time-dependent magnetic field enables a coherent energy-manipulation scheme. The experiment confirms high quality of the method [31], which is expected to allow advanced studies of multipartite entanglements in single particles.…”

Section: Introductionsupporting

confidence: 52%

Investigations of fundamental phenomena in quantum mechanics with neutrons

Hasegawa

2014

J. Phys.: Conf. Ser.

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Abstract. Neutron interferometer and polarimeter are used for the experimental investigations of quantum mechanical phenomena. Interferometry exhibits clear evidence of quantumcontextuality and polarimetry demonstrates conflicts of a contextual model of quantum mechanicsá la Leggett. In these experiments, entanglements are achieved between degrees of freedom in a single-particle: spin, path and energy degrees of freedom are manipulated coherently and entangled. Both experiments manifest the fact that quantum contextuality is valid for phenomena with matter waves with high precision. In addition, another experiment is described which deals with error-disturbance uncertainty relation: we have experimentally tested error-disturbance uncertainty relations, one is derived by Heisenberg and the other by Ozawa. Experimental results confirm the fact that the Heisenberg's uncertainty relation is often violated and that the new relation by Ozawa is always larger than the limit. At last, as an example of a counterfactual phenomenon of quantum mechanics, observation of so-called quantum Cheshire Cat is carried out by using neutron interferometer. Experimental results suggest that pre-and post-selected neutrons travel through one of the arms of the interferometer while their magnetic moment is located in the other arm.

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Section: Introductionsupporting

confidence: 52%

Investigations of fundamental phenomena in quantum mechanics with neutrons

Hasegawa

2014

J. Phys.: Conf. Ser.

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“…[59] demonstrates that using magnetic resonance techniques, it is possible to create entanglement between the spin, path and energy degree of freedom of the neutron.…”

Section: Coherent Manipulation Of the Neutron Spin Phase And Energymentioning

confidence: 99%

“…15, we show the diagram that corresponds to the experiment [59]. Spin-polarized neutrons impinge on beam splitter BS0.…”

Section: A Quantum Theorymentioning

confidence: 99%

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Discrete-event simulation of neutron interferometry experiments

Raedt

Jin

Michielsen

2012

AIP Conference Proceedings

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A discrete-event approach, which has already been shown to give a cause-and-effect explanation of many quantum optics experiments, is applied to single-neutron interferometry experiments. The simulation algorithm yields a logically consistent description in terms of individual neutrons and does not require the knowledge of the solution of a wave equation. It is shown that the simulation method reproduces the results of several singleneutron interferometry experiments, including experiments which, in quantum theoretical language, involve entanglement. Our results demonstrate that classical (non-Hamiltonian) systems can exhibit correlations which in quantum theory are associated with interference and entanglement, also when all particles emitted by the source are accounted for.

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“…This provides the basis for triple entanglement experiments using spin-path-energy as independent degrees of freedom [56]. These GHZ-states are a new tool for basic neutron quantum optics experiments and may be new components of quantum computing elements like CNOT gates.…”

Section: Contextuality and Kochen-specker Phenomenonmentioning

confidence: 99%

Neutron Matter Wave Quantum Optics

Rauch

2011

Found Phys

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Neutron matter-wave optics provides the basis for new quantum experiments and a step towards applications of quantum phenomena. Most experiments have been performed with a perfect crystal neutron interferometer where widely separated coherent beams can be manipulated individually. Various geometric phases have been measured and their robustness against fluctuation effects has been proven, which may become a useful property for advanced quantum communication. Quantum contextuality for single particle systems shows that quantum correlations are to some extent more demanding than classical ones. In this case entanglement between external and internal degrees of freedom offers new insights into basic laws of quantum physics. Non-contextuality hidden variable theories can be rejected by arguments based on the Kochen-Specker theorem.

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Coherent energy manipulation in single-neutron interferometry

Cited by 31 publications

References 26 publications

Investigations of fundamental phenomena in quantum mechanics with neutrons

Investigations of fundamental phenomena in quantum mechanics with neutrons

Discrete-event simulation of neutron interferometry experiments

Neutron Matter Wave Quantum Optics

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