Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Pezzè L"'
Publikováno v:
Phys. Rev. A 99, 062115 (2019)
We show that matter-wave interference fringes formed by two overlapping atomic clouds can yield information about the non-local Bell correlations. To this end, we consider a simple atomic interferometer, where the clouds are released from the double-
Externí odkaz:
http://arxiv.org/abs/1903.03367
Publikováno v:
Phys. Rev. Lett. 123, 260403 (2019)
We propose to generate macroscopic superposition states of a large number of atoms in the ground state of a three-mode spinor Bose-Einstein condensate. The ground state is protected by a finite energy gap, is immune to phase noise, and the measuremen
Externí odkaz:
http://arxiv.org/abs/1712.03864
Publikováno v:
Phys. Rev. A 97, 032339 (2018)
Recent experiments have demonstrated the generation of entanglement by quasi-adiabatically driving through quantum phase transitions of a ferromagnetic spin-1 Bose-Einstein condensate in the presence of a tunable quadratic Zeeman shift. We analyze, i
Externí odkaz:
http://arxiv.org/abs/1712.03896
Autor:
Spagnolli, G., Semeghini, G., Masi, L., Ferioli, G., Trenkwalder, A., Coop, S., Landini, M., Pezze', L., Modugno, G., Inguscio, M., Smerzi, A., Fattori, M.
Publikováno v:
Phys. Rev. Lett. 118, 230403 (2017)
We explore the interplay between tunneling and interatomic interactions in the dynamics of a bosonic Josephson junction. We tune the scattering length of an atomic $^{39}$K Bose-Einstein condensate confined in a double-well trap to investigate regime
Externí odkaz:
http://arxiv.org/abs/1703.02370
Akademický článek
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Autor:
Kruse, I., Lange, K., Peise, J., Lücke, B., Pezzè, L., Arlt, J., Ertmer, W., Lisdat, C., Santos, L., Smerzi, A., Klempt, C.
Publikováno v:
Phys. Rev. Lett. 117, 143004 (2016)
Since the pioneering work of Ramsey, atom interferometers are employed for precision metrology, in particular to measure time and to realize the second. In a classical interferometer, an ensemble of atoms is prepared in one of the two input states, w
Externí odkaz:
http://arxiv.org/abs/1605.07754
Autor:
Trenkwalder, A., Spagnolli, G., Semeghini, G., Coop, S., Landini, M., Castilho, P., Pezzè, L., Modugno, G., Inguscio, M., Smerzi, A., Fattori, M.
Symmetry-breaking quantum phase transitions play a key role in several condensed matter, cosmology and nuclear physics theoretical models. Its observation in real systems is often hampered by finite temperatures and limited control of the system para
Externí odkaz:
http://arxiv.org/abs/1603.02979
Autor:
Peise, J., Kruse, I., Lange, K., Lücke, B., Pezzè, L., Arlt, J., Ertmer, W., Hammerer, K., Santos, L., Smerzi, A., Klempt, C.
Publikováno v:
Nature Communications 6, 8984 (2015)
In 1935, Einstein, Podolsky and Rosen (EPR) questioned the completeness of quantum mechanics by devising a quantum state of two massive particles with maximally correlated space and momentum coordinates. The EPR criterion qualifies such continuous-va
Externí odkaz:
http://arxiv.org/abs/1511.08704
Autor:
Peise, J., Lücke, B., Pezzè, L., Deuretzbacher, F., Ertmer, W., Arlt, J., Smerzi, A., Santos, L., Klempt, C.
Publikováno v:
Nature Communications 6, 6811 (2015)
Quantum mechanics predicts that our physical reality is influenced by events that can potentially happen but factually do not occur. Interaction-free measurements (IFMs) exploit this counterintuitive influence to detect the presence of an object with
Externí odkaz:
http://arxiv.org/abs/1511.07636
Publikováno v:
Phys. Rev. A 93, 022115 (2016)
We sudy the creation of nonlocal states with ultracold atoms trapped in an optical lattice. We show that these states violate Bell inequality by measuring one- and two-body correlations. Our scheme only requires beam splitting operations and global p
Externí odkaz:
http://arxiv.org/abs/1505.02902