Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Spreeuw, Robert"'
Publikováno v:
Phys. Rev. Research 4, 023245 (2022)
Single strontium atoms held in optical tweezers have so far only been imaged using the broad $^{1\hspace{-0.3ex}}S_0$-$^{1\hspace{-0.3ex}}P_1$ transition. For Yb, use of the narrow (183 kHz-wide) $^{1\hspace{-0.3ex}}S_0$-$^{3\hspace{-0.3ex}}P_1$ tran
Externí odkaz:
http://arxiv.org/abs/2202.05727
Autor:
Spreeuw, Robert J. C.
Publikováno v:
Nanophotonics 2021
The insight that optical vortex beams carry orbital angular momentum (OAM), which emerged in Leiden about 30 years ago, has since led to an ever expanding range of applications and follow-up studies. This paper starts with a short personal account of
Externí odkaz:
http://arxiv.org/abs/2109.03937
Autor:
Weggemans, Jordi R., Urech, Alexander, Rausch, Alexander, Spreeuw, Robert, Boucherie, Richard, Schreck, Florian, Schoutens, Kareljan, Minář, Jiří, Speelman, Florian
Publikováno v:
Quantum 6, 687 (2022)
We study the correlation clustering problem using the quantum approximate optimization algorithm (QAOA) and qudits, which constitute a natural platform for such non-binary problems. Specifically, we consider a neutral atom quantum computer and propos
Externí odkaz:
http://arxiv.org/abs/2106.11672
Autor:
Spreeuw, Robert J. C.
Publikováno v:
Phys. Rev. Lett. 125, 233201 (2020)
It is shown that a circular dipole can deflect the focused laser beam that induces it, and will experience a corresponding transverse force. Quantitative expressions are derived for Gaussian and angular tophat beams, while the effects vanish in the p
Externí odkaz:
http://arxiv.org/abs/2005.07790
Autor:
Machluf, Shimon, Naber, Julian B., Soudijn, Maarten L., Ruostekoski, Janne, Spreeuw, Robert J. C.
Publikováno v:
Phys. Rev. A 100, 051801 (2019)
We observe a density-dependent collective suppression of optical pumping between the hyperfine ground states in an array of submicrometer-sized clouds of cold rubidium atoms. The suppressed Raman transition rate can be explained by strong resonant di
Externí odkaz:
http://arxiv.org/abs/1804.09759
Publikováno v:
Optics Express, 21, 10188-10198 (2013)
In this paper we show that the sensitivity of absorption imaging of ultracold atoms can be significantly improved by imaging in a standing-wave configuration. We present simulations of single-atom absorption imaging both for a travelling-wave and a s
Externí odkaz:
http://arxiv.org/abs/1302.5378
Publikováno v:
New J. Phys. 12, 103029 (2010)
We introduce a general method for designing tailored lattices of magnetic microtraps for ultracold atoms, on the basis of patterned permanently magnetized films. A fast numerical algorithm is used to automatically generate patterns which provide opti
Externí odkaz:
http://arxiv.org/abs/1006.4532
Autor:
Spreeuw, Robert J. C., Hijmans, Tom W.
Publikováno v:
Phys. Rev. A 76, 022306 (2007)
We present a modification of the standard single-item quantum search procedure that acquires robustness from spontaneous decay of the qubits. This damps the usual oscillation of populations, driving the system to a steady state with a strongly enhanc
Externí odkaz:
http://arxiv.org/abs/quant-ph/0609047
Autor:
Spreeuw, Robert J. C.
Publikováno v:
Phys. Rev. A 63, 062302 (2001)
An analogous model system for quantum information processing is discussed, based on classical wave optics. The model system is applied to three examples that involve three qubits: ({\em i}) three-particle Greenberger-Horne-Zeilinger entanglement, ({\
Externí odkaz:
http://arxiv.org/abs/quant-ph/0009066
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