Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Jürgen Appel"'
Autor:
Asbjørn Moltke, Callum R. Smith, Rasmus D. Engelsholm, Erik N. Christensen, Mattia Michieletto, Jonas S. Madsen, Jürgen Appel, Anders Brusch, Poul Erik Hansen, Christian R. Petersen, Christos Markos, Patrick B. Montague, Ole Bang
Publikováno v:
Nonlinear Frequency Generation and Conversion: Materials and Devices XXII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8de7517cd48a82844cb88474bb7ab267
https://doi.org/10.1117/12.2649940
https://doi.org/10.1117/12.2649940
Autor:
Asbjørn Moltke, Jonas S. Madsen, Callum R. Smith, Rasmus D. Engelsholm, Erik N. Christensen, Mattia Michieletto, Jürgen Appel, Anders Brusch, Christian R. Petersen, Poul Erik Hansen, Christos Markos, Patrick B. Montague, Ole Bang
Publikováno v:
Nonlinear Frequency Generation and Conversion: Materials and Devices XXII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70d63c75242099bc5cf48d950bab7d86
https://doi.org/10.1117/12.2649984
https://doi.org/10.1117/12.2649984
Autor:
Signe B. Markussen, Eugene S. Polzik, J.-B. Béguin, Jörg H. Müller, Christoffer Østfeldt, Jürgen Appel
Publikováno v:
Markussen, S B, Appel, J, Ostfeldt, C, Beguin, J-B S, Polzik, E S & Müller, J H 2020, ' Measurement and simulation of atomic motion in nanoscale optical trapping potentials ', Applied Physics B, vol. 126, no. 4, 73 . https://doi.org/10.1007/s00340-020-07424-5
Applied Physics B
Applied Physics B
Atoms trapped in the evanescent field around a nanofiber experience strong coupling to the light guided in the fiber mode. However, due to the intrinsically strong positional dependence of the coupling, thermal motion of the ensemble limits the use o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61f7f8210d3b2007891011fb486cf481
http://arxiv.org/abs/2006.12167
http://arxiv.org/abs/2006.12167
Publikováno v:
Physical Review X, Vol 8, Iss 3, p 031010 (2018)
Beguin, J-B, Müller, J H, Appel, J & Polzik, E S 2018, ' Observation of Quantum Spin Noise in a 1D Light-Atoms Quantum Interface ', Physical Review X, vol. 8, no. 3, 031010 . https://doi.org/10.1103/PhysRevX.8.031010
Beguin, J-B, Müller, J H, Appel, J & Polzik, E S 2018, ' Observation of Quantum Spin Noise in a 1D Light-Atoms Quantum Interface ', Physical Review X, vol. 8, no. 3, 031010 . https://doi.org/10.1103/PhysRevX.8.031010
We observe collective quantum spin states of an ensemble of atoms in a one-dimensional light-atom interface. Strings of hundreds of cesium atoms trapped in the evanescent field of a tapered nanofiber are prepared in a coherent spin state, a superposi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cc80d439e6a0f68e19966d18726b864
https://doaj.org/article/7787ecf138a94fb0b6b05bf77edd38af
https://doaj.org/article/7787ecf138a94fb0b6b05bf77edd38af
Publikováno v:
Physical Review A. 95
We show that spin squeezing criteria commonly used for entanglement detection can be erroneous, if the probe is not symmetric. We then derive a lower bound on squeezing for separable states in spin systems probed asymmetrically. Using this we further
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f6089d6a333f6c5d4f50c393e4f8af7
https://doi.org/10.1103/physreva.95.040301
https://doi.org/10.1103/physreva.95.040301
Autor:
Eugene S. Polzik, Jürgen Appel, Freja T. Pedersen, J.-B. Béguin, Jörg H. Müller, Christoffer Østfeldt
The evanescent field surrounding nanoscale optical waveguides offers an efficient interface between light and mesoscopic ensembles of neutral atoms. However, the thermal motion of trapped atoms, combined with the strong radial gradients of the guided
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02e95bf7504e7175b58e4f056c3be854
Publikováno v:
Ultrasonics Sonochemistry. 11:39-42
Filamentary formations of acoustic cavitation bubbles in an ultrasonic resonator are recorded by high-speed stereoscopic means. The bubble locations and motions are reconstructed in three dimensions, and a velocity distribution of bubbles is obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48350ae9da15b8c4a8de18dc55b240d6
https://doi.org/10.1016/s1350-4177(03)00111-1
https://doi.org/10.1016/s1350-4177(03)00111-1
Autor:
E. Bookjans, Jörg H. Müller, S. L. Christensen, Eugene S. Polzik, J.-B. Béguin, Jürgen Appel, H. L. Sørensen
Publikováno v:
Physical review letters. 113(26)
We demonstrate preparation and detection of an atom number distribution in a one-dimensional atomic lattice with the variance $-14$ dB below the Poissonian noise level. A mesoscopic ensemble containing a few thousand atoms is trapped in the evanescen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b9136c49fd8f90111f85720ddc0fbd3
https://pubmed.ncbi.nlm.nih.gov/25615331
https://pubmed.ncbi.nlm.nih.gov/25615331
Autor:
Jörg H. Müller, S. L. Christensen, E. Bookjans, J.-B. Béguin, Jürgen Appel, Eugene S. Polzik, H. L. Sørensen
Publikováno v:
Physical Review A
We report on the observation of quantum interference of a collective single spin excitation with a spin ensemble of $N_{\text{atom}} =10^5$ atoms. Detection of a single photon scattered from the atoms creates the single spin excitation, a Fock state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5462a6abf59f20a8a33d5e6fd9400c4
https://doi.org/10.1103/physreva.89.033801
https://doi.org/10.1103/physreva.89.033801
Autor:
Anders S. Sørensen, Anders Simonsen, Albert Schliesser, Jacob M. Taylor, Emil Zeuthen, Eugene S. Polzik, Tolga Bagci, Louis G. Villanueva, Koji Usami, Jürgen Appel, Silvan Schmid
Publikováno v:
Bagci, T, Simonsen, A, Schmid, S, Villanueva, L G, Zeuthen, E, Appel, J, Taylor, J M, Sørensen, A S, Usami, K, Schliesser, A & Polzik, E S 2014, ' Optical detection of radio waves through a nanomechanical transducer ', Nature, vol. 507, pp. 81-85 . https://doi.org/10.1038/nature13029
Scopus-Elsevier
Scopus-Elsevier
Low-loss transmission and sensitive recovery of weak radio-frequency (rf) and microwave signals is an ubiquitous technological challenge, crucial in fields as diverse as radio astronomy, medical imaging, navigation and communication, including those
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::624ff67c14c154a56390168d06432afc
https://curis.ku.dk/portal/da/publications/optical-detection-of-radio-waves-through-a-nanomechanical-transducer(3bae3854-9433-43ea-b0f3-3dfbc11604c6).html
https://curis.ku.dk/portal/da/publications/optical-detection-of-radio-waves-through-a-nanomechanical-transducer(3bae3854-9433-43ea-b0f3-3dfbc11604c6).html