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View article: Significant loophole-free test of Kochen-Specker contextuality using two species of atomic ions
Significant loophole-free test of Kochen-Specker contextuality using two species of atomic ions Open
Quantum measurements cannot be thought of as revealing preexisting results, even when they do not disturb any other measurement in the same trial. This feature is called contextuality and is crucial for the quantum advantage in computing. …
View article: Frequency stabilization of a 650 nm laser to an I<sub>2</sub> spectrum for trapped Ba138<sup>+</sup> ions
Frequency stabilization of a 650 nm laser to an I<sub>2</sub> spectrum for trapped Ba138<sup>+</sup> ions Open
The optical manipulation of Ba$^{+}$ ions is mainly performed by a 493 nm\nlaser for the S$_{1/2}$-P$_{1/2}$ transition and a 650 nm laser for the\nP$_{1/2}$-D$_{3/2}$ transition. Since the branching ratio between the 493 nm\nand 650 nm tr…
View article: NOON States of Nine Quantized Vibrations in Two Radial Modes of a Trapped Ion
NOON States of Nine Quantized Vibrations in Two Radial Modes of a Trapped Ion Open
We develop a deterministic method to generate and verify arbitrarily high NOON states of quantized vibrations (phonons), through the coupling to the internal state. We experimentally create the entangled states up to N=9 phonons in two vib…
View article: Correction: Corrigendum: Experimental Certification of Random Numbers via Quantum Contextuality
Correction: Corrigendum: Experimental Certification of Random Numbers via Quantum Contextuality Open
Scientific Reports 3: Article number: 1627; published online: 09 April 2013; updated: 02 February 2018. The original version of this Article contained an error in the spelling of the author Yangchao Shen, which was incorrectly given as She…
View article: Reconstruction of the Jaynes-Cummings field state of ionic motion in a harmonic trap
Reconstruction of the Jaynes-Cummings field state of ionic motion in a harmonic trap Open
A quantum state is fully characterized by its density matrix or equivalently\nby its quasiprobabilities in phase space. A scheme to identify the\nquasiprobabilities of a quantum state is an important tool in the recent\ndevelopment of quan…
View article: Testing Nonclassicality and Non-Gaussianity in Phase Space
Testing Nonclassicality and Non-Gaussianity in Phase Space Open
We theoretically propose and experimentally demonstrate a nonclassicality test of a single-mode field in phase space, which has an analogy with the nonlocality test proposed by Banaszek and Wódkiewicz [Phys. Rev. Lett. 82, 2009 (1999)]. Ou…