Zobrazeno 1 - 10
of 30
pro vyhledávání: '"van der Ploeg, P. H. W."'
Autor:
Oelsner, G., van der Ploeg, S. H. W., Macha, P., Hübner, U., Born, D., Il'ichev, E., Meyer, H. -G., Grajcar, M., Wünsch, S., Siegel, M., Omelyanchouk, A. N., Astafiev, O.
Publikováno v:
Phys. Rev. B 81, 172505 (2010)
We study a flux qubit in a coplanar waveguide resonator by measuring transmission through the system. In our system with the flux qubit decoupled galvanically from the resonator, the intermediate coupling regime is achieved. In this regime dispersive
Externí odkaz:
http://arxiv.org/abs/0910.4739
Autor:
Macha, P., van der Ploeg, S. H. W., Oelsner, G., Il'ichev, E., Meyer, H. -G., Wuensch, S., Siegel, M.
Publikováno v:
Applied Physics Letters 96, 062503 (2010)
We study the loss rate for a set of lambda/2 coplanar waveguide resonators at millikelvin temperatures (20 mK - 900mK) and different applied powers (3E-19 W - 1E-12 W). The loss rate becomes power independent below a critical power. For a fixed power
Externí odkaz:
http://arxiv.org/abs/0910.0685
Autor:
Il'ichev, E., Shevchenko, S. N., van der Ploeg, S. H. W., Grajcar, M., Temchenko, E. A., Omelyanchouk, A. N., Meyer, H. -G.
Publikováno v:
Phys. Rev. B 81, 012506 (2010)
We study spectroscopy of artificial solid-state four-level quantum system. This system is formed by two coupled superconducting flux qubits. When multiple driving frequency of the applied microwaves matches the energy difference between any two level
Externí odkaz:
http://arxiv.org/abs/0908.2728
Autor:
Izmalkov, A., van der Ploeg, S. H. W., Shevchenko, S. N., Grajcar, M., Il'ichev, E., Hübner, U., Omelyanchouk, A. N., Meyer, H. -G.
Publikováno v:
Phys. Rev. Lett. 101, 017003 (2008)
We compare the results of ground state and spectroscopic measurements carried out on superconducting flux qubits which are effective two-level quantum systems. For a single qubit and for two coupled qubits we show excellent agreement between the para
Externí odkaz:
http://arxiv.org/abs/0808.3901
Autor:
Shevchenko, S. N., van der Ploeg, S. H. W., Grajcar, M., Il'ichev, E., Omelyanchouk, A. N., Meyer, H. -G.
Publikováno v:
Phys. Rev. B 78, 174527 (2008)
The interaction of flux qubits with a low frequency tank circuit is studied. It is shown that changes in the state of the interacting qubits influence the effective impedance of the circuit, which is the essence of the so-called impedance measurement
Externí odkaz:
http://arxiv.org/abs/0808.1520
Autor:
Grajcar, M., van der Ploeg, S. H. W., Izmalkov, A., Il'ichev, E., Meyer, H. -G., Fedorov, A., Shnirman, A., Schön, Gerd
Laser cooling of the atomic motion paved the way for remarkable achievements in the fields of quantum optics and atomic physics, including Bose-Einstein condensation and the trapping of atoms in optical lattices. More recently superconducting qubits
Externí odkaz:
http://arxiv.org/abs/0708.0665
Autor:
van der Ploeg, S. H. W., Izmalkov, A., Grajcar, M., Huebner, U., Linzen, S., Uchaikin, S., Wagner, Th., Smirnov, A. Yu., Brink, A. Maassen van den, Amin, M. H. S., Zagoskin, A. M., Il'ichev, E., Meyer, H. -G.
Controllable adiabatic evolution of a multi-qubit system can be used for adiabatic quantum computation (AQC). This evolution ends at a configuration where the Hamiltonian of the system encodes the solution of the problem to be solved. As a first step
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702580
Autor:
Zakosarenko, V., Bondarenko, N., van der Ploeg, S. H. W., Izmalkov, A., Linzen, S., Kunert, J., Grajcar, M., Il'ichev, E., Meyer, H. -G.
Publikováno v:
Appl. Phys. Lett. 90, 022501 (2007)
We implement a classical counterpart of a scalable design for adiabatic quantum computation. The key element of this design is a coupler providing controllable coupling between two bistable elements (in our case superconducting rings with a single Jo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608325
Autor:
van der Ploeg, S. H. W., Izmalkov, A., Brink, Alec Maassen van den, Huebner, U., Grajcar, M., Il'ichev, E., Meyer, H. -G., Zagoskin, A. M.
Publikováno v:
Phys. Rev. Lett. 98, 057004 (2007)
We have realized controllable coupling between two three-junction flux qubits by inserting an additional coupler loop between them, containing three Josephson junctions. Two of these are shared with the qubit loops, providing strong qubit--coupler in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605588
Autor:
Izmalkov, A., Grajcar, M., van der Ploeg, S. H. W., Huebner, U., Il'ichev, E., Meyer, H. -G., Zagoskin, A. M.
Publikováno v:
Europhys. Lett., 76 (3), pp. 533-539 (2006)
The ground state susceptibility of a system consisting of three flux-qubits was measured in the complete three dimensional flux space around the common degeneracy point of the qubits. The system's Hamiltonian could be completely reconstructed from me
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605070