Search

Your search keyword '"Bø, L"' showing total 212 results
Start Over Author "Bø, L"
212 results on '"Bø, L"'

2. Beam steering at the nanosecond time scale with an atomically thin reflector

Author

Andersen, Trond I., Gelly, Ryan J., Scuri, Giovanni, Dwyer, Bo L., Wild, Dominik S., Bekenstein, Rivka, Sushko, Andrey, Sung, Jiho, Zhou, You, Zibrov, Alexander A., Liu, Xiaoling, Joe, Andrew Y., Watanabe, Kenji, Taniguchi, Takashi, Yelin, Susanne F., Kim, Philip, Park, Hongkun, and Lukin, Mikhail D.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science, Physics - Optics
Abstract

Techniques to mold the flow of light on subwavelength scales enable fundamentally new optical systems and device applications. The realization of programmable, active optical systems with fast, tunable components is among the outstanding challenges in the field. Here, we experimentally demonstrate a few-pixel beam steering device based on electrostatic gate control of excitons in an atomically thin semiconductor with strong light-matter interactions. By combining the high reflectivity of a MoSe2 monolayer with a graphene split-gate geometry, we shape the wavefront phase profile to achieve continuously tunable beam deflection with a range of 10$^\circ$, two-dimensional beam steering, and switching times down to 1.6 nanoseconds. Our approach opens the door for a new class of atomically thin optical systems, such as rapidly switchable beam arrays and quantum metasurfaces operating at their fundamental thickness limit.

Published
2021
Full Text
View/download PDF

3. Probing spin dynamics on diamond surfaces using a single quantum sensor

Author

Dwyer, Bo L., Rodgers, Lila V. H., Urbach, Elana K., Bluvstein, Dolev, Sangtawesin, Sorawis, Zhou, Hengyun, Nassab, Yahia, Fitzpatrick, Mattias, Yuan, Zhiyang, De Greve, Kristiaan, Peterson, Eric L., Chou, Jyh-Pin, Gali, Adam, Dobrovitski, V. V., Lukin, Mikhail D., and de Leon, Nathalie P.

Subjects
Quantum Physics, Condensed Matter - Materials Science
Abstract

Understanding the dynamics of a quantum bit's environment is essential for the realization of practical systems for quantum information processing and metrology. We use single nitrogen-vacancy (NV) centers in diamond to study the dynamics of a disordered spin ensemble at the diamond surface. Specifically, we tune the density of "dark" surface spins to interrogate their contribution to the decoherence of shallow NV center spin qubits. When the average surface spin spacing exceeds the NV center depth, we find that the surface spin contribution to the NV center free induction decay can be described by a stretched exponential with variable power n. We show that these observations are consistent with a model in which the spatial positions of the surface spins are fixed for each measurement, but some of them reconfigure between measurements. In particular, we observe a depth-dependent critical time associated with a dynamical transition from Gaussian (n=2) decay to n=2/3, and show that this transition arises from the competition between the small decay contributions of many distant spins and strong coupling to a few proximal spins at the surface. These observations demonstrate the potential of a local sensor for understanding complex systems and elucidate pathways for improving and controlling spin qubits at the surface., Comment: 32 pages, 4 figures main text, 15 figures supplementary information

Published
2021

8. Origins of diamond surface noise probed by correlating single spin measurements with surface spectroscopy

Author

Sangtawesin, Sorawis, Dwyer, Bo L., Srinivasan, Srikanth, Allred, James J., Rodgers, Lila V. H., De Greve, Kristiaan, Stacey, Alastair, Dontschuk, Nikolai, O'Donnell, Kane M., Hu, Di, Evans, D. Andrew, Jaye, Cherno, Fischer, Daniel A., Markham, Matthew L., Twitchen, Daniel J., Park, Hongkun, Lukin, Mikhail D., and de Leon, Nathalie P.

Subjects
Condensed Matter - Materials Science, Quantum Physics
Abstract

The nitrogen vacancy (NV) center in diamond exhibits spin-dependent fluorescence and long spin coherence times under ambient conditions, enabling applications in quantum information processing and sensing. NV centers near the surface can have strong interactions with external materials and spins, enabling new forms of nanoscale spectroscopy. However, NV spin coherence degrades within 100 nanometers of the surface, suggesting that diamond surfaces are plagued with ubiquitous defects. Prior work on characterizing near-surface noise has primarily relied on using NV centers themselves as probes; while this has the advantage of exquisite sensitivity, it provides only indirect information about the origin of the noise. Here we demonstrate that surface spectroscopy methods and single spin measurements can be used as complementary diagnostics to understand sources of noise. We find that surface morphology is crucial for realizing reproducible chemical termination, and use these insights to achieve a highly ordered, oxygen-terminated surface with suppressed noise. We observe NV centers within 10 nm of the surface with coherence times extended by an order of magnitude.

Published
2018
Full Text
View/download PDF

9. Genome-wide study of early and severe childhood asthma identifies interaction between CDHR3 and GSDMB

Author

Eliasen, Anders U., Pedersen, Casper Emil T., Rasmussen, Morten A., Wang, Ni, Soverini, Matteo, Fritz, Amelie, Stokholm, Jakob, Chawes, Bo L., Morin, Andréanne, Bork-Jensen, Jette, Grarup, Niels, Pedersen, Oluf, Hansen, Torben, Linneberg, Allan, Mortensen, Preben B., Hougaard, David M., Bybjerg-Grauholm, Jonas, Bækvad-Hansen, Marie, Mors, Ole, Nordentoft, Merete, Børglum, Anders D., Werge, Thomas, Agerbo, Esben, Söderhall, Cilla, Altman, Matthew C., Thysen, Anna H., McKennan, Chris G., Brix, Susanne, Gern, James E., Ober, Carole, Ahluwalia, Tarunveer S., Bisgaard, Hans, Pedersen, Anders G., and Bønnelykke, Klaus

Published
2022
Full Text
View/download PDF

21. Effectiveness of autologous haematopoietic stem cell transplantation versus natalizumab in progressive multiple sclerosis

Author

Kalincik, T, Sharmin, S, Massey, J, Sutton, I, Withers, B, Freedman, MS, Atkins, H, Krasulova, E, Havrdova, EK, Trneny, M, Kozak, T, Burman, J, MacDonell, R, Torkildsen, Ø, Bø, L, Lehmann, AK, Sharrack, B, Snowden, J, Kalincik, T, Sharmin, S, Massey, J, Sutton, I, Withers, B, Freedman, MS, Atkins, H, Krasulova, E, Havrdova, EK, Trneny, M, Kozak, T, Burman, J, MacDonell, R, Torkildsen, Ø, Bø, L, Lehmann, AK, Sharrack, B, and Snowden, J

Abstract

Background: Natalizumab was not shown to modify disability in progressive multiple sclerosis (MS). This matched observational study compared the effectiveness of autologous hematopoietic stem cell transplantation (AHSCT) with natalizumab in progressive MS. Methods: Patients with primary/secondary progressive MS from 7 AHSCT MS centres and the MSBase registry, treated with AHSCT or natalizumab were matched on a propensity score derived from sex, age, Expanded Disability Status Scale (EDSS), number of relapses 12/24 months before baseline, time from MS onset, the most effective prior therapy and country. The pairwise- censored groups were compared on hazards of 6-month confirmed EDSS worsening and improvement, relapses and annualised relapse rates (ARR), using Andersen-Gill proportional hazards models and conditional negative binomial model. Findings: 39 patients treated with AHSCT (37 with secondary progressive MS, mean age 37 years, EDSS 5.7, 28% with recent disability progression, ARR 0.54 during the preceding year) were matched with 65 patients treated with natalizumab. The study found no evidence for difference in hazards of confirmed EDSS worsening (hazard ratio 1.49, 95% confidence interval [95%CI] 0.70-3.14) and improvement (hazard ratio 1.50, 95%CI 0.22-10.29) between AHSCT and natalizumab over up to 4 years. The relapse activity was also similar while treated with AHSCT and natalizumab (ARR: mean±standard deviation 0.08±0.28 vs. 0.08±0.25; hazard ratio 1.05, 95%CI 0.39-2.82). In the AHSCT group, 3 patients experienced febrile neutropenia during mobilisation, 9 patients experienced serum sickness, 6 patients required ICU admission, and 36 patients experienced complications after discharge. No treatment-related deaths were reported. Conclusion: This study does not support the use of AHSCT to control disability in progressive MS with advanced disability and low relapse activity.

Published
2024

22. Whole Genome Sequencing Identifies CRISPLD2 as a Lung Function Gene in Children With Asthma

Author

Abe, Namiko, Abecasis, Goncalo, Albert, Christine, Palmer Allred, Nicholette (Nichole), Almasy, Laura, Alonso, Alvaro, Ament, Seth, Anderson, Peter, Anugu, Pramod, Applebaum-Bowden, Deborah, Arking, Dan, Arnett, Donna K., Ashley-Koch, Allison, Aslibekyan, Stella, Assimes, Tim, Auer, Paul, Avramopoulos, Dimitrios, Barnard, John, Barnes, Kathleen, Barr, R. Graham, Barron-Casella, Emily, Beaty, Terri, Becker, Diane, Becker, Lewis, Beer, Rebecca, Begum, Ferdouse, Beitelshees, Amber, Benjamin, Emelia, Bezerra, Marcos, Bielak, Larry, Bis, Joshua, Blackwell, Thomas, Blangero, John, Boerwinkle, Eric, Borecki, Ingrid, Bowler, Russell, Brody, Jennifer, Broeckel, Ulrich, Broome, Jai, Bunting, Karen, Burchard, Esteban, Cardwell, Jonathan, Carty, Cara, Casaburi, Richard, Casella, James, Chaffin, Mark, Chang, Christy, Chasman, Daniel, Chavan, Sameer, Chen, Bo-Juen, Chen, Wei-Min, Chen, Yii-Der Ida, Cho, Michael H., Choi, Seung Hoan, Chuang, Lee-Ming, Chung, Mina, Cornell, Elaine, Correa, Adolfo, Crandall, Carolyn, Crapo, James, Cupples, L. Adrienne, Curran, Joanne, Curtis, Jeffrey, Custer, Brian, Damcott, Coleen, Darbar, Dawood, Das, Sayantan, David, Sean, Davis, Colleen, Daya, Michelle, de Andrade, Mariza, DeBaun, Michael, Deka, Ranjan, DeMeo, Dawn, Devine, Scott, Do, Ron, Duan, Qing, Duggirala, Ravi, Durda, Peter, Dutcher, Susan, Eaton, Charles, Ekunwe, Lynette, Ellinor, Patrick, Emery, Leslie, Farber, Charles, Farnam, Leanna, Fingerlin, Tasha, Flickinger, Matthew, Fornage, Myriam, Franceschini, Nora, Fu, Mao, Fullerton, Stephanie M., Fulton, Lucinda, Gabriel, Stacey, Gan, Weiniu, Gao, Yan, Gass, Margery, Gelb, Bruce, Geng, Xiaoqi (Priscilla), Germer, Soren, Gignoux, Chris, Gladwin, Mark, Glahn, David, Gogarten, Stephanie, Gong, Da-Wei, Goring, Harald, Gu, C. Charles, Guan, Yue, Guo, Xiuqing, Haessler, Jeff, Hall, Michael, Harris, Daniel, Hawley, Nicola, He, Jiang, Heavner, Ben, Heckbert, Susan, Hernandez, Ryan, Herrington, David, Hersh, Craig, Hidalgo, Bertha, Hixson, James, Hokanson, John, Holly, Kramer, Hong, Elliott, Hoth, Karin, (Agnes) Hsiung, Chao, Huston, Haley, Hwu, Chii Min, Irvin, Marguerite Ryan, Jackson, Rebecca, Jain, Deepti, Jaquish, Cashell, Jhun, Min A., Johnsen, Jill, Johnson, Andrew, Johnson, Craig, Johnston, Rich, Jones, Kimberly, Kachroo, Priyadarshini, Kang, Hyun Min, Kaplan, Robert, Kardia, Sharon, Kathiresan, Sekar, Kaufman, Laura, Kelly, Shannon, Kenny, Eimear, Kessler, Michael, Khan, Alyna, Kinney, Greg, Konkle, Barbara, Kooperberg, Charles, Krauter, Stephanie, Lange, Christoph, Lange, Ethan, Lange, Leslie, Laurie, Cathy, Laurie, Cecelia, LeBoff, Meryl, Lee, Seunggeun Shawn, Lee, Wen-Jane, LeFaive, Jonathon, Levine, David, Levy, Dan, Lewis, Joshua, Li, Yun, Lin, Honghuang, Lin, Keng Han, Liu, Simin, Liu, Yongmei, Loos, Ruth, Lubitz, Steven, Lunetta, Kathryn, Luo, James, Mahaney, Michael, Make, Barry, Manichaikul, Ani, Manson, JoAnn, Margolin, Lauren, Martin, Lisa, Mathai, Susan, Mathias, Rasika, McArdle, Patrick, McDonald, Merry-Lynn, McFarland, Sean, McGarvey, Stephen, Mei, Hao, Meyers, Deborah A., Mikulla, Julie, Min, Nancy, Minear, Mollie, Minster, Ryan L., Mitchell, Braxton, Montasser, May E., Musani, Solomon, Mwasongwe, Stanford, Mychaleckyj, Josyf C., Nadkarni, Girish, Naik, Rakhi, Natarajan, Pradeep, Nekhai, Sergei, Nickerson, Deborah, North, Kari, O'Connell, Jeff, O'Connor, Tim, Ochs-Balcom, Heather, Pankow, James, Papanicolaou, George, Parker, Margaret, Parsa, Afshin, Penchev, Sara, Peralta, Juan Manuel, Perez, Marco, Perry, James, Peters, Ulrike, Peyser, Patricia, Phillips, Lawrence S., Phillips, Sam, Pollin, Toni, Post, Wendy, Becker, Julia Powers, Boorgula, Meher Preethi, Preuss, Michael, Prokopenko, Dmitry, Psaty, Bruce, Qasba, Pankaj, Qiao, Dandi, Qin, Zhaohui, Rafaels, Nicholas, Raffield, Laura, Ramachandran, Vasan, Rao, D.C., Rasmussen-Torvik, Laura, Ratan, Aakrosh, Redline, Susan, Reed, Robert, Regan, Elizabeth, Reiner, Alex, Rice, Ken, Rich, Stephen, Roden, Dan, Roselli, Carolina, Rotter, Jerome, Ruczinski, Ingo, Russell, Pamela, Ruuska, Sarah, Ryan, Kathleen, Sakornsakolpat, Phuwanat, Salimi, Shabnam, Salzberg, Steven, Sandow, Kevin, Sankaran, Vijay, Scheller, Christopher, Schmidt, Ellen, Schwander, Karen, Schwartz, David, Sciurba, Frank, Seidman, Christine, Seidman, Jonathan, Sheehan, Vivien, Shetty, Amol, Shetty, Aniket, Sheu, Wayne Hui-Heng, Shoemaker, M. Benjamin, Silver, Brian, Silverman, Edwin, Smith, Jennifer, Smith, Josh, Smith, Nicholas, Smith, Tanja, Smoller, Sylvia, Snively, Beverly, Sofer, Tamar, Sotoodehnia, Nona, Stilp, Adrienne, Streeten, Elizabeth, Sung, Yun Ju, Su-Lasky, Jessica, Sylvia, Jody, Szpiro, Adam, Sztalryd, Carole, Taliun, Daniel, Tang, Hua, Taub, Margaret, Taylor, Kent, Taylor, Simeon, Telen, Marilyn, Thornton, Timothy A., Tinker, Lesley, Tirschwell, David, Tiwari, Hemant, Tracy, Russell, Tsai, Michael, Vaidya, Dhananjay, VandeHaar, Peter, Vrieze, Scott, Walker, Tarik, Wallace, Robert, Walts, Avram, Wan, Emily, Wang, Fei Fei, Watson, Karol, Weeks, Daniel E., Weir, Bruce, Weiss, Scott, Weng, Lu-Chen, Willer, Cristen, Williams, Kayleen, Williams, L. Keoki, Wilson, Carla, Wilson, James, Wong, Quenna, Xu, Huichun, Yanek, Lisa, Yang, Ivana, Yang, Rongze, Zaghloul, Norann, Zekavat, Maryam, Zhang, Yingze, Zhao, Snow Xueyan, Zhao, Wei, Zheng, Xiuwen, Zhi, Degui, Zhou, Xiang, Zody, Michael, Zoellner, Sebastian, Hecker, Julian, Chawes, Bo L., Ahluwalia, Tarunveer S., Kelly, Rachel S., Chu, Su H., Virkud, Yamini V., Huang, Mengna, Barnes, Kathleen C., Burchard, Esteban G., Eng, Celeste, Hu, Donglei, Celedón, Juan C., Levin, Albert M., Gui, Hongsheng, Forno, Erick, Mak, Angel C.Y., Avila, Lydiana, Soto-Quiros, Manuel E., Cloutier, Michelle M., Acosta-Pérez, Edna, Canino, Glorisa, Bønnelykke, Klaus, Bisgaard, Hans, Raby, Benjamin A., Weiss, Scott T., and Lasky-Su, Jessica A.

Published
2019
Full Text
View/download PDF

38. Azithromycin for episodes with asthma-like symptoms in young children aged 1–3 years: a randomised, double-blind, placebo-controlled trial

Author

Stokholm, Jakob, Chawes, Bo L, Vissing, Nadja H, Bjarnadóttir, Elín, Pedersen, Tine M, Vinding, Rebecca K, Schoos, Ann-Marie M, Wolsk, Helene M, Thorsteinsdóttir, Sunna, Hallas, Henrik W, Arianto, Lambang, Schjørring, Susanne, Krogfelt, Karen A, Fischer, Thea K, Pipper, Christian B, Bønnelykke, Klaus, and Bisgaard, Hans

Published
2016
Full Text
View/download PDF

39. Design and Analysis of Test Signals for System Identification

Author

Bo, L I U, Jun, Z H A O, Jixin, Q I A N, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Alexandrov, Vassil N., editor, van Albada, Geert Dick, editor, Sloot, Peter M. A., editor, and Dongarra, Jack, editor

Published
2006
Full Text
View/download PDF

40. Grey Matter Pathology in Multiple Sclerosis

Author

Brink, B. P., Mork, S. J., Van Der Valk, P., Bo, L., Comi, Giancarlo, editor, Meldolesi, Jacopo, editor, Filippi, Massimo, editor, Leocani, Letizia, editor, Martino, Gianvito, editor, and Rovaris, Marco, editor

Published
2004
Full Text
View/download PDF

49. Consensus for tinnitus patient assessment and treatment outcome measurement: Tinnitus Research Initiative meeting, Regensburg, July 2006

Author

Langguth, B., Goodey, R., Azevedo, A., Bjorne, A., Cacace, A., Crocetti, A., Del Bo, L., De Ridder, D., Diges, I., Elbert, T., Flor, H., Herraiz, C., Ganz Sanchez, T., Eichhammer, P., Figueiredo, R., Hajak, G., Kleinjung, T., Landgrebe, M., Londero, A., Lainez, M.J.A., Mazzoli, M., Meikle, M.B., Melcher, J., Rauschecker, J.P., Sand, P.G., Struve, M., Van de Heyning, P., Van Dijk, P., and Vergara, R.

Published
2007
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results