Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Haikka P"'
Autor:
Heck, Robert, Vuculescu, Oana, Sørensen, Jens Jakob, Zoller, Jonathan, Andreasen, Morten G., Bason, Mark G., Ejlertsen, Poul, Elíasson, Ottó, Haikka, Pinja, Laustsen, Jens S., Nielsen, Lærke L., Mao, Andrew, Müller, Romain, Napolitano, Mario, Pedersen, Mads K., Thorsen, Aske R., Bergenholtz, Carsten, Calarco, Tommaso, Montangero, Simone, Sherson, Jacob F.
Publikováno v:
PNAS, published online ahead of print (2018)
We introduce a novel remote interface to control and optimize the experimental production of Bose-Einstein condensates (BECs) and find improved solutions using two distinct implementations. First, a team of theoreticians employed a Remote version of
Externí odkaz:
http://arxiv.org/abs/1709.02230
Publikováno v:
Phys. Rev. A 95, 022306 (2017)
We propose a method for detecting the presence of a single spin in a crystal by coupling it to a high-quality factor superconducting planar resonator. By confining the microwave field in a constriction of nanometric dimensions, the coupling constant
Externí odkaz:
http://arxiv.org/abs/1609.01132
Autor:
Sørensen, Jens Jakob W. H., Pedersen, Mads Kock, Munch, Michael, Haikka, Pinja, Jensen, Jesper Halkjær, Planke, Tilo, Andreasen, Morten Ginnerup, Gajdacz, Miroslav, Mølmer, Klaus, Lieberoth, Andreas, Sherson, Jacob F., players, Quantum Moves
Publikováno v:
Nature 532, 210 (2016) (retracted updated version published here Phys. Rev. Research 3, 013057 (2021))
Humans routinely solve problems of immense computational complexity by intuitively forming simple, low-dimensional heuristic strategies. Citizen science exploits this ability by presenting scientific research problems to non-experts. Gamification is
Externí odkaz:
http://arxiv.org/abs/1506.09091
Publikováno v:
Phys. Rev. A 90, 054101 (2014)
We study how non-Markovianity of an open two-level system can be detected when continuously monitoring a part of its bosonic environment. Considering a physical scenario of an atom in a lossy cavity, we demonstrate that the properties of the time-dep
Externí odkaz:
http://arxiv.org/abs/1409.4516
Autor:
Haikka, Pinja, Maniscalco, Sabrina
We review the most recent developments in the theory of open quantum systems focusing on situations in which the reservoir memory effects, due to long-lasting and non-negligible correlations between system and environment, play a crucial role. These
Externí odkaz:
http://arxiv.org/abs/1403.2156
Autor:
Haikka, Pinja, Molmer, Klaus
The Landau-Zener formula provides an analytical expression for the final excitation of a quantum system after passage of an avoided crossing of two energy levels. If the two levels correspond to a ground state, and to an excited state which is subjec
Externí odkaz:
http://arxiv.org/abs/1403.1378
Publikováno v:
Phys. Rev. A 89, 024101 (2014)
We study the interplay between coherence trapping, information back-flow and the form of the reservoir spectral density for dephasing qubits. We show that stationary coherence is maximized when the qubit undergoes non-Markovian dynamics, and we eluci
Externí odkaz:
http://arxiv.org/abs/1311.0699
Publikováno v:
Phys. Rev. A 88, 010101(R) (2013)
We investigate the back-flow of information in a system with a second-order structural phase transition, namely a quasi one-dimensional Coulomb crystal. Using standard Ramsey interferometry which couples a target ion (the system) to the rest of the c
Externí odkaz:
http://arxiv.org/abs/1302.4260
Publikováno v:
Phys. Rev. A 87, 052109 (2013)
We study non-Markovianity as backflow of information in two-qubit systems. We consider a setting where, by changing the distance between the qubits, one can interpolate between independent reservoir and common reservoir scenarios. We demonstrate that
Externí odkaz:
http://arxiv.org/abs/1302.4259
We present a detailed investigation of the dynamics of two physically different qubit models, dephasing under the effect of an ultracold atomic gas in a Bose-Einstein condensed (BEC) state. We study the robustness of each qubit probe against environm
Externí odkaz:
http://arxiv.org/abs/1301.0416