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De Lange, G. (author), Ristè, D. (author), Dobrovitski, V.V. (author), Hanson, R. (author)We experimentally demonstrate single-spin magnetometry with multipulse sensing sequences. The use of multipulse sequences can greatly increase the sensing time per measurement shot, resulting in enhanced ac magnetic field sensitivity. We theoretically derive and experimentally verify the optimal number of sensing cycles, for which the effects of...journal article 2011
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Dobrovitski, V.V. (author), De Lange, G. (author), Ristè, D. (author), Hanson, R. (author)Long-time dynamical decoupling and quantum control of qubits require high-precision control pulses. Full characterization (quantum tomography) of imperfect pulses presents a bootstrap problem: tomography requires initial states of a qubit which cannot be prepared without perfect pulses. We present a protocol for pulse error analysis,...journal article 2010
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Dijk, J. (author), Van Eekeren, A.W.M. (author), Schutte, K. (author), De Lange, D.J.J. (author), Van Vliet, L.J. (author)When bright moving objects are viewed with an electro-optical system at very long range, they will appear as small slightly blurred moving points in the recorded image sequence. Detection of point targets is seriously hampered by structure in the background, temporal noise and aliasing artifacts due to undersampling by the infrared (IR) sensor....conference paper 2009
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Van der Sar, T. (author), Heeres, E.C. (author), Dmochowski, G.M. (author), De Lange, G. (author), Robledo, L. (author), Oosterkamp, T.H. (author), Hanson, R. (author)Precise control over the position of a single quantum object is important for many experiments in quantum science and nanotechnology. We report on a technique for high-accuracy positioning of individual diamond nanocrystals. The positioning is done with a home-built nanomanipulator under real-time scanning electron imaging, yielding an accuracy...journal article 2009
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- Dijk, J. (author), Van Eekeren, A.W.M. (author), Schutte, K. (author), De Lange, D.J.J. (author), Van Vliet, L.J. (author) journal article 2008
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Kooi, J.W. (author), Baselmans, J.J.A. (author), Hajenius, M. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Dieleman, P. (author), Baryshev, A. (author), De Lange, G. (author)The intermediate frequency (IF) characteristics, the frequency dependent IF impedance, and the mixer conversion gain of a small area hot electron bolometer (HEB) have been measured and modeled. The device used is a twin slot antenna coupled NbN HEB mixer with a bridge area of 1×0.15??m2, and a critical temperature of 8.3?K. In the experiment the...journal article 2007
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De Lange, G. (author), Jackson, B.D. (author), Jochemsen, M. (author), Laauwen, W.M. (author), De Jong, L. (author), Kroug, M. (author), Zijlstra, T. (author), Klapwijk, T.M. (author)We describe the performance of the Band 3 and Band 4 Flight Model mixer units for Herschel/HIFI Instrument. These units are part of the Focal Plane Unit of HIFI. The band 3 and 4 mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The sensitivities of the mixers within the HIFI setting are...conference paper 2006
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Schmidt, C.A. (author), Cuypers, C. (author), Van den Heuvel, H. (author), De Lange, W.J. (author), Van Noort, P.C.M. (author)In het kader van het Nader Onderzoek van de verontreinigde waterbodem van de Sliedrechtse Biesbosch is AKWA-RIZA door RWS directie Zuid-Holland verzocht een inschatting te doen van het actueel risico van verspreiding van de verontreinigingen via het grondwater. De bepaling van het actueel risico is gefaseerd uitgevoerd conform de Richtlijn nader...report 2006
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Jackson, B.D. (author), De Lange, G. (author), Zijlstra, T. (author), Kroug, M. (author), Klapwijk, T.M. (author), Stern, J.A. (author)Integrating NbTiN-based microstrip tuning circuits with traditional Nb superconductor-insulator-superconductor (SIS) junctions enables the low-noise operation regime of SIS mixers to be extended from below 0.7?to?1.15?THz. In particular, mixers incorporating a NbTiN/SiO2/NbTiN microstrip tuning circuit offer low-noise performance below 0.8–0.85...journal article 2005
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De Lange, G. (author), Jackson, B.D. (author), Eggens, M. (author), Golstein, H. (author), Jochemsen, M. (author), Laauwen, W.M. (author), De Jong, L. (author), Kikken, S. (author), Kroug, M. (author), Zijlstra, T. (author)We describe the current status of the HIFI mixer units for Band 3 and Band 4. The mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The major requirements and the design strategy are described. Functional tests of the magnet, the de-flux heater, IF-circuit, and the corrugated horn were...conference paper 2004
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Wildenborg, A.F.B. (author), Orlic, B. (author), Thimus, J.F. (author), De Lange, G. (author), De Cock, S. (author), De Leeuwe, C.S. (author), Veling, E.J.M. (author)The Dutch national research programme into the feasibility of retrievable storage of radioactive waste (CORA Programme Phase I; CORA: Comité Opslag Radioactief Afval = Committee on Radioactive Waste Disposal) examined the suitability of Tertiary clay deposits for such storage. Long-term isolation – up to 1 million years – of high-level...journal article 2002
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- De Lange, A.J.P. (author) doctoral thesis 2000
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- De Lange, R.B. (author), Mol, A.C. (author) book 1999
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- Schavemaker, P.H. (author), De Lange, A.J.P. (author), Van der Sluis, L. (author) conference paper 1999
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- De Lange, W.J. (author) doctoral thesis 1996
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Berkemeijer, S.M.W. (author), De Lange, H.C. (author), Ramaker, E.J.J. (author), Woo, S.F. (author)Document(en) uit de collectie Chemische Procestechnologiereport 1995
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Artan, R. (author), Brogtrop, E. (author), Houwen, P. (author), De l'Isle, M. (author), De Lange, B. (author), Spits, R. (author), Van Tilburg, A. (author), De Waard, J. (author), Wicaksono, H. (author), Wybenga, H. (author)Document(en) uit de collectie Chemische Procestechnologie.report 1992
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- De Lange, S.J. (author) book 1991
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De Mol van Otterloo, M.J. (author), De Lange, M. (author)Document(en) uit de collectie Chemische Procestechnologiereport 1991
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- De Lange, A.A.J. (author) doctoral thesis 1991