Zobrazeno 1 - 10
of 17 112
pro vyhledávání: '"At Home"'
Autor:
Holzapfel, David, Schmid, Fabian, Schwegler, Nick, Stadler, Oliver, Stadler, Martin, Ferk, Alexander, Home, Jonathan P., Kienzler, Daniel
Science is founded on the benchmarking of theoretical models against experimental measurements, with the challenge that for all but the simplest systems, the calculations required for high precision become extremely challenging. $\mathrm{H}_2^+$ is t
Externí odkaz:
http://arxiv.org/abs/2409.06495
Autor:
de Neeve, Brennan, Nguyen, Thanh-Long, Ferk, Alexander, Behrle, Tanja, Lancellotti, Francesco, Simoni, Matteo, Welte, Stephan, Home, Jonathan
We propose and experimentally demonstrate a method for laser cooling an oscillator based on sequences of spin-state-dependent displacements followed by spin repumping. For a thermal state with mean occupation $\bar{n}\gg 1$ the method attains a reduc
Externí odkaz:
http://arxiv.org/abs/2408.16128
We introduce a novel reservoir engineering approach for stabilizing multi-component Schr\"odinger's cat manifolds. The fundamental principle of the method lies in the destructive interference at crossings of gain and loss Hamiltonian terms in the cou
Externí odkaz:
http://arxiv.org/abs/2407.18087
Autor:
Flannery, Jeremy, Matt, Roland, Huber, Luca, Wang, Kaizhao, Axline, Christopher, Oswald, Robin, Home, Jonathan P.
We present an experimental investigation of coherent crosstalk cancellation methods for light delivered to a linear ion chain cryogenic quantum register. The ions are individually addressed using focused laser beams oriented perpendicular to the crys
Externí odkaz:
http://arxiv.org/abs/2406.06775
Phase estimation is known to be a robust method for single-qubit gate calibration in quantum computers, while Bayesian estimation is widely used in devising optimal methods for learning in quantum systems. We present Bayesian phase estimation methods
Externí odkaz:
http://arxiv.org/abs/2405.08930
Publikováno v:
Phys. Rev. Lett. 133, 020802, 2024
We theoretically formulate and experimentally demonstrate a secure scheme for semi-device-independent quantum random number generation by utilizing Leggett-Garg inequality violations, within a loophole-free photonic architecture. The quantification o
Externí odkaz:
http://arxiv.org/abs/2402.03712
Autor:
Mordini, Carmelo, Vasquez, Alfredo Ricci, Motohashi, Yuto, Müller, Mose, Malinowski, Maciej, Zhang, Chi, Mehta, Karan K., Kienzler, Daniel, Home, Jonathan P.
Multiplexed operations and extended coherent control over multiple trapping sites are fundamental requirements for a trapped-ion processor in a large scale architecture. Here we demonstrate these building blocks using a surface-electrode trap with in
Externí odkaz:
http://arxiv.org/abs/2401.18056
Autor:
Lancellotti, Francesco, Welte, Stephan, Simoni, Matteo, Mordini, Carmelo, Behrle, Tanja, de Neeve, Brennan, Marinelli, Matteo, Negnevitsky, Vlad, Home, Jonathan
Publikováno v:
Phys. Rev. Research 6, L032059 (2024)
We demonstrate low-excitation transport and separation of two-ion crystals consisting of one beryllium and one calcium ion, with a high mass ratio of $4.4$. The full separation involves transport of the mixed-species chain, splitting each ion into se
Externí odkaz:
http://arxiv.org/abs/2312.14006
It has recently been argued that among the various suggested measures of tripartite entanglement, the two particular measures, viz. the Concurrence Fill and the Genuine Multipartite Concurrence are the only 'genuine' tripartite entanglement measures
Externí odkaz:
http://arxiv.org/abs/2308.16236
Autor:
Jain, Shreyans, Sägesser, Tobias, Hrmo, Pavel, Torkzaban, Celeste, Stadler, Martin, Oswald, Robin, Axline, Chris, Bautista-Salvador, Amado, Ospelkaus, Christian, Kienzler, Daniel, Home, Jonathan
Publikováno v:
Jain, S., S\"agesser, T., Hrmo, P. et al. Penning micro-trap for quantum computing. Nature (2024)
Trapped ions in radio-frequency traps are among the leading approaches for realizing quantum computers, due to high-fidelity quantum gates and long coherence times. However, the use of radio-frequencies presents a number of challenges to scaling, inc
Externí odkaz:
http://arxiv.org/abs/2308.07672