Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Ernst M Rasel"'
Publikováno v:
New Journal of Physics, Vol 23, Iss 9, p 093002 (2021)
We investigate time-domain optics for atomic quantum matter. Within a matter-wave analog of the thin-lens formalism, we study optical lenses of different shapes and refractive powers to precisely control the dispersion of Bose–Einstein condensates.
Externí odkaz:
https://doaj.org/article/edabda99ed2a4d38b89f3dcd49f0975a
Autor:
Robin Corgier, Sina Loriani, Holger Ahlers, Katerine Posso-Trujillo, Christian Schubert, Ernst M Rasel, Eric Charron, Naceur Gaaloul
Publikováno v:
New Journal of Physics, Vol 22, Iss 12, p 123008 (2020)
We present a source engineering concept for a binary quantum mixture suitable as input for differential, precision atom interferometry with drift times of several seconds. To solve the non-linear dynamics of the mixture, we develop a set of scaling a
Externí odkaz:
https://doaj.org/article/2f2f5ba4e419486e8ba69a798f0affbc
Publikováno v:
New Journal of Physics, Vol 21, Iss 1, p 013039 (2019)
Atom laser experiments with Bose–Einstein condensates (BECs) performed in ground-based laboratories feature a coherent and directed beam of atoms which is accelerated by gravity. In microgravity the situation is fundamentally different because the
Externí odkaz:
https://doaj.org/article/c5c267d2cc81470cbeedca18ea5b04d1
Autor:
Jan Rudolph, Waldemar Herr, Christoph Grzeschik, Tammo Sternke, Alexander Grote, Manuel Popp, Dennis Becker, Hauke Müntinga, Holger Ahlers, Achim Peters, Claus Lämmerzahl, Klaus Sengstock, Naceur Gaaloul, Wolfgang Ertmer, Ernst M Rasel
Publikováno v:
New Journal of Physics, Vol 17, Iss 7, p 079601 (2015)
Externí odkaz:
https://doaj.org/article/e0b0bd5cc3b94dd1bee8fd025790945f
Autor:
Jan Rudolph, Waldemar Herr, Christoph Grzeschik, Tammo Sternke, Alexander Grote, Manuel Popp, Dennis Becker, Hauke Müntinga, Holger Ahlers, Achim Peters, Claus Lämmerzahl, Klaus Sengstock, Naceur Gaaloul, Wolfgang Ertmer, Ernst M Rasel
Publikováno v:
New Journal of Physics, Vol 17, Iss 6, p 065001 (2015)
Quantum sensors based on coherent matter-waves are precise measurement devices whose ultimate accuracy is achieved with Bose–Einstein condensates (BECs) in extended free fall. This is ideally realized in microgravity environments such as drop tower
Externí odkaz:
https://doaj.org/article/f87651344d7a4ca9a9288a699e5cc7fc
Publikováno v:
New Journal of Physics, Vol 15, Iss 1, p 013007 (2013)
Motivated by a recent claim by Müller et al (2010 Nature 463 926–9) that an atom interferometer can serve as an atom clock to measure the gravitational redshift with an unprecedented accuracy, we provide a representation-free description of the Ka
Externí odkaz:
https://doaj.org/article/15b5fa8435c741d586a847494de128fa
Autor:
Naceur Gaaloul, Matthias Meister, Robin Corgier, Annie Pichery, Patrick Boegel, Waldemar Herr, Holger Ahlers, Eric Charron, Jason R. Williams, Robert J. Thompson, Wolfgang P. Schleich, Ernst M. Rasel, Nicholas P. Bigelow
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Ultracold ensembles are promising sources for precision measurements when their quantum state can precisely be prepared. Here the authors achieve a quantum state engineering of Bose-Einstein condensates in space using NASA’s Cold Atom Lab aboard th
Externí odkaz:
https://doaj.org/article/22b58b55ebea4ffd9b39439f2339c0e1
Autor:
Henning Albers, Robin Corgier, Alexander Herbst, Ashwin Rajagopalan, Christian Schubert, Christian Vogt, Marian Woltmann, Claus Lämmerzahl, Sven Herrmann, Eric Charron, Wofgang Ertmer, Ernst M. Rasel, Naceur Gaaloul, Dennis Schlippert
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-7 (2022)
Matter-wave sensors benefit from high flux cold atomic sources. Here, a time-averaged optical dipole trap is reported that generates Bose-Einstein condensates by fast evaporative cooling and further reduces the expansion by means of an all-optical ma
Externí odkaz:
https://doaj.org/article/59a243979d584048a833aa966d24446b
Autor:
Christian Schubert, Sven Abend, Matthias Gersemann, Martina Gebbe, Dennis Schlippert, Peter Berg, Ernst M. Rasel
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract The sensitivity of light and matter-wave interferometers to rotations is based on the Sagnac effect and increases with the area enclosed by the interferometer. In the case of light, the latter can be enlarged by forming multiple fibre loops,
Externí odkaz:
https://doaj.org/article/dbee783c24fa497490fff2a9ac1a9c03
Autor:
Martina Gebbe, Jan-Niclas Siemß, Matthias Gersemann, Hauke Müntinga, Sven Herrmann, Claus Lämmerzahl, Holger Ahlers, Naceur Gaaloul, Christian Schubert, Klemens Hammerer, Sven Abend, Ernst M. Rasel
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Atom interferometers can be useful for precision measurement of fundamental constants and sensors of different type. Here the authors demonstrate a compact twin-lattice atom interferometry exploiting Bose-Einstein condensates (BECs) of 87 Rb atoms.
Externí odkaz:
https://doaj.org/article/c768f2aa556a417c85389016ca457c5a