Auflistung nach Schlagwort "Quantum optics"

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  • Quantum sensing of oscillating electric fields with trapped ions 
    Wolf, Fabian; Schmidt, Piet O. ([London] : Elsevier Ltd., 2021)
    Quantum noise is a fundamental limitation for quantum sensors and results in the so-called shot-noise limit. Nowadays, several systems such as optical clocks or gravitational wave detectors approach measurement sensitivities ...
  • The quantum technologies roadmap: A European community view 
    Acín, Antonio; Bloch, Immanuel; Buhrman, Harry; Calarco, Tommaso; Eichler, Christopher; Eisert, Jens; Esteve, Daniel; Gisin, Nicolas; Glaser, Steffen J.; Jelezko, Fedor; Kuhr, Stefan; Lewenstein, Maciej; Riedel, Max F.; Schmidt, Piet O.; Thew, Rob; Wallraff, Andreas; Walmsley, Ian; Wilhelm, Frank K. (Bristol : Institute of Physics Publishing, 2018)
    Within the last two decades, quantum technologies (QT) have made tremendous progress, moving from Nobel Prize award-winning experiments on quantum physics (1997: Chu, Cohen-Tanoudji, Phillips; 2001: Cornell, Ketterle, ...
  • Roadmap on STIRAP applications 
    Bergmann, Klaas; Nägerl, Hanns-Christoph; Panda, Cristian; Gabrielse, Gerald; Miloglyadov, Eduard; Quack, Martin; Seyfang, Georg; Wichmann, Gunther; Ospelkaus, Silke; Kuhn, Axel; Longhi, Stefano; Szameit, Alexander; Pirro, Philipp; Hillebrands, Burkard; Zhu, Xue-Feng; Zhu, Jie; Drewsen, Michael; Hensinger, Winfried K.; Weidt, Sebastian; Halfmann, Thomas; Wang, Hai-Lin; Paraoanu, Gheorghe Sorin; Vitanov, Nikolay V.; Mompart, Jordi; Busch, Thomas; Barnum, Timothy J.; Grimes, David D.; Field, Robert W.; Raizen, Mark G.; Narevicius, Edvardas; Auzinsh, Marcis; Budker, Dmitry; Pálffy, Adriana; Keitel, Christoph H. (Bristol : Institute of Physics Publishing, 2019)
    STIRAP (stimulated Raman adiabatic passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of populations between quantum states. A particularly interesting feature ...
  • Selective ultrafast control of multi-level quantum systems by subcycle and unipolar pulses 
    Arkhipov, Rostislav; Pakhomov, Anton; Arkhipov, Mikhail; Demircan, Ayhan; Morgner, Uwe; Rosanov, Nikolay; Babushkin, Ihar (Washington, DC : OSA - The Optical Society, 2020)
    The most typical way to optically control population of atomic and molecular systems is to illuminate them with radiation, resonant to the relevant transitions. Here we consider a possibility to control populations with ...
  • Simulating open quantum systems: From many-body interactions to stabilizer pumping 
    Müller, M.; Hammerer, Klemens; Zhou, Y.L.; Roos, C.F.; Zoller, P. (Bristol : IOP Publishing Ltd., 2011)
    In a recent experiment, Barreiro et al (2011 Nature 470 486) demonstrated the fundamental building blocks of an open-system quantum simulator with trapped ions. Using up to five ions, dynamics were realized by sequences ...
  • Single-Atom Quantum Probes for Ultracold Gases Boosted by Nonequilibrium Spin Dynamics 
    Bouton, Quentin; Nettersheim, Jens; Adam, Daniel; Schmidt, Felix; Mayer, Daniel; Lausch, Tobias; Tiemann, Eberhard; Widera, Artur (College Park, MD : American Physical Society, 2020)
    Quantum probes are atomic sized devices mapping information of their environment to quantum-mechanical states. By improving measurements and at the same time minimizing perturbation of the environment, they form a central ...
  • Smallest state spaces for which bipartite entangled quantum states are separable 
    Anwar, H.; Jevtic, S.; Rudolph, O.; Virmani, S. (Bristol : Institute of Physics Publishing, 2015)
    According to usual definitions, entangled states cannot be given a separable decomposition in terms of products of local density operators. If we relax the requirement that the local operators be positive, then an entangled ...
  • Squeezed States of Light for Future Gravitational Wave Detectors at a Wavelength of 1550 nm 
    Meylahn, Fabian; Willke, Benno; Vahlbruch, Henning (College Park, Md. : APS, 2022)
    The generation of strongly squeezed vacuum states of light is a key technology for future ground-based gravitational wave detectors (GWDs) to reach sensitivities beyond their quantum noise limit. For some proposed observatory ...
  • Stability of quantum linear logic circuits against perturbations 
    Babushkin, Ihar; Morgner, Uwe; Demircan, Ayhan (Bristol : IOP Publ., 2020)
    Here we study transformation of waveshapes of photons under the action of the linear logic circuits and other related architectures involving only linear optical networks and measurements. We show that the gates are working ...
  • Statistical limits for entanglement swapping with semiconductor entangled photon sources 
    Yang, Jingzhong; Zopf, Michael; Li, Pengji; Sharma, Nand Lal; Nie, Weijie; Benthin, Frederik; Fandrich, Tom; Rugeramigabo, Eddy P.; Hopfmann, Caspar; Keil, Robert; Schmidt, Oliver G.; Ding, Fei (Ridge, NY : American Physical Society (APS), 2022-06-23)
    Semiconductor quantum dots are promising building blocks for quantum communication applications. Al- though deterministic, efficient, and coherent emission of entangled photons has been realized, implementing a practical ...
  • Temperature-dependent broadening of coherent current peaks in InAs double quantum dots 
    Dani, Olfa; Hussein, Robert; Bayer, Johannes C.; Kohler, Sigmund; Haug, Rolf J. (London : Springer Nature, 2022)
    Quantum systems as used for quantum computation or quantum sensing are nowadays often realized in solid state devices as e.g. complex Josephson circuits or coupled quantum-dot systems. Condensed matter as an environment ...
  • Three-beam atom interferometer 
    Hinderthür, H.; Pautz, A.; Rieger, V.; Ruschewitz, F.; Peng, J.L.; Sengstock, K.; Ertmer, Wolfgang (American Physical Society, 1997)
    We present an atom interferometer based on the interference of three partial matter waves in three different internal and external states. Coherent laser excitation acts as a beamsplitter to create a superposition state ...
  • Ultracold atom interferometry in space 
    Lachmann, Maike D.; Ahlers, Holger; Becker, Dennis; Dinkelaker, Aline N.; Grosse, Jens; Hellmig, Ortwin; Müntinga, Hauke; Schkolnik, Vladimir; Seidel, Stephan T.; Wendrich, Thijs; Wenzlawski, André; Carrick, Benjamin; Gaaloul, Naceur; Lüdtke, Daniel; Braxmaier, Claus; Ertmer, Wolfgang; Krutzik, Markus; Lämmerzahl, Claus; Peters, Achim; Schleich, Wolfgang P.; Sengstock, Klaus; Wicht, Andreas; Windpassinger, Patrick; Rasel, Ernst M. (London : Nature Publishing Group, 2021)
    Bose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and ...
  • Unraveling Two-Photon Entanglement via the Squeezing Spectrum of Light Traveling through Nanofiber-Coupled Atoms 
    Hinney, Jakob; Prasad, Adarsh S.; Mahmoodian, Sahand; Hammerer, Klemens; Rauschenbeutel, Arno; Schneeweiss, Philipp; Volz, Jürgen; Schemmer, Max (College Park, Md. : APS, 2021)
    We observe that a weak guided light field transmitted through an ensemble of atoms coupled to an optical nanofiber exhibits quadrature squeezing. From the measured squeezing spectrum we gain direct access to the phase and ...