Zobrazeno 1 - 10
of 373
pro vyhledávání: '"Häffner H"'
Publikováno v:
Phys. Rev. Lett. 119, 160401 (2017)
Quantum statistics have a profound impact on the properties of systems composed of identical particles. In this Letter, we demonstrate that the quantum statistics of a pair of identical massive particles can be probed by a direct measurement of the e
Externí odkaz:
http://arxiv.org/abs/1706.04231
Autor:
Brandl, M. F., van Mourik, M. W., Postler, L., Nolf, A., Lakhmanskiy, K., Paiva, R. R., Möller, S., Daniilidis, N., Häffner, H., Kaushal, V., Ruster, T., Warschburger, C., Kaufmann, H., Poschinger, U. G., Schmidt-Kaler, F., Schindler, P., Monz, T., Blatt, R.
We report on the design of a cryogenic setup for trapped ion quantum computing containing a segmented surface electrode trap. The heat shield of our cryostat is designed to attenuate alternating magnetic field noise, resulting in 120~dB reduction of
Externí odkaz:
http://arxiv.org/abs/1607.04980
Autor:
Talukdar, I., Gorman, D. J., Daniilidis, N., Schindler, P., Ebadi, S., Kaufmann, H., Zhang, T., Häffner, H.
Publikováno v:
Phys. Rev. A 93, 043415 (2016)
Electric noise from metallic surfaces is a major obstacle towards quantum applications with trapped ions due to motional heating of the ions. Here, we discuss how the same noise source can also lead to pure dephasing of motional quantum states. The m
Externí odkaz:
http://arxiv.org/abs/1511.04819
Autor:
Dzuba, V. A., Flambaum, V. V., Safronova, M. S., Porsev, S. G., Pruttivarasin, T., Hohensee, M. A., Häffner, H.
Lorentz symmetry is one of the cornerstones of modern physics. However, a number of theories aiming at unifying gravity with the other fundamental interactions including string field theory suggest violation of Lorentz symmetry [1-4]. While the energ
Externí odkaz:
http://arxiv.org/abs/1507.06048
Autor:
Pruttivarasin, T., Ramm, M., Porsev, S. G., Tupitsyn, I. I., Safronova, M., Hohensee, M. A., Haeffner, H.
Publikováno v:
Nature 517, 592 (2015)
All evidence so far suggests that the absolute spatial orientation of an experiment never affects its outcome. This is reflected in the Standard Model of physics by requiring all particles and fields to be invariant under Lorentz transformations. The
Externí odkaz:
http://arxiv.org/abs/1412.2194
Publikováno v:
Physical Review A 90, 043412 (2014)
We present measurements of resistive and sympathetic cooling of ion clouds confined in a Penning trap. For resistive cooling of a cloud consisting of one ion species, we observe a significant deviation from exponential cooling behavior which is expla
Externí odkaz:
http://arxiv.org/abs/1410.8656
Publikováno v:
New J. Phys. 16 092001 (2014)
We establish a novel approach to probing spatially resolved multi-time correlation functions of interacting many-body systems, with scalable experimental overhead. Specifically, designing nonlinear measurement protocols for multidimensional spectra i
Externí odkaz:
http://arxiv.org/abs/1312.3365
Publikováno v:
Nature Physics 10, 105 (2014)
As one of the most striking features of quantum mechanics, quantum correlations are at the heart of quantum information science. Detection of correlations usually requires access to all the correlated subsystems. However, in many realistic scenarios
Externí odkaz:
http://arxiv.org/abs/1311.4489
Autor:
Daniilidis, N., Gerber, S., Bolloten, G., Ramm, M., Ransford, A., Ulin-Avila, E., Talukdar, I., Häffner, H.
We report room-temperature electric field noise measurements combined with in-situ surface characterization and cleaning of a microfabricated ion trap. We used a single-ion electric field noise sensor in combination with surface cleaning and analysis
Externí odkaz:
http://arxiv.org/abs/1307.7194
Publikováno v:
Phys. Rev. Lett. 108, 023602 (2012)
We study an open quantum system of atoms with long-range Rydberg interaction, laser driving, and spontaneous emission. Over time, the system occasionally jumps between a state of low Rydberg population and a state of high Rydberg population. The jump
Externí odkaz:
http://arxiv.org/abs/1109.6506