Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Muhonen, J T"'
Autor:
Muhonen, J. T., Dehollain, J. P., Laucht, A., Simmons, S., Kalra, R., Hudson, F. E., Jamieson, D. N., McCallum, J. C., Itoh, K. M., Dzurak, A. S., Morello, A.
Publikováno v:
Phys. Rev. B 98, 155201 (2018)
The understanding of weak measurements and interaction-free measurements has greatly expanded the conceptual and experimental toolbox to explore the quantum world. Here we demonstrate single-shot variable-strength weak measurements of the electron an
Externí odkaz:
http://arxiv.org/abs/1702.07991
Autor:
Freer, S., Simmons, S., Laucht, A., Muhonen, J. T., Dehollain, J. P., Kalra, R., Mohiyaddin, F. A., Hudson, F., Itoh, K. M., McCallum, J. C., Jamieson, D. N., Dzurak, A. S., Morello, A.
Long coherence times and fast gate operations are desirable but often conflicting requirements for physical qubits. This conflict can be resolved by resorting to fast qubits for operations, and by storing their state in a `quantum memory' while idle.
Externí odkaz:
http://arxiv.org/abs/1608.07109
Autor:
Veldhorst, M., Yang, C. H., Hwang, J. C. C., Huang, W., Dehollain, J. P., Muhonen, J. T., Simmons, S., Laucht, A., Hudson, F. E., Itoh, K. M., Morello, A., Dzurak, A. S.
Publikováno v:
Full details, including two-qubit readout after CNOT operation, are in the published version: Nature 526, 410-414 (2015)
Quantum computation requires qubits that can be coupled and realized in a scalable manner, together with universal and high-fidelity one- and two-qubit logic gates \cite{DiVincenzo2000, Loss1998}. Strong effort across several fields have led to an im
Externí odkaz:
http://arxiv.org/abs/1411.5760
Autor:
Muhonen, J. T., Laucht, A., Simmons, S., Dehollain, J. P., Kalra, R., Hudson, F. E., Freer, S., Itoh, K. M., Jamieson, D. N., McCallum, J. C., Dzurak, A. S., Morello, A.
Publikováno v:
J. Phys.: Condens. Matter 27 (2015) 154205
Building upon the demonstration of coherent control and single-shot readout of the electron and nuclear spins of individual 31-P atoms in silicon, we present here a systematic experimental estimate of quantum gate fidelities using randomized benchmar
Externí odkaz:
http://arxiv.org/abs/1410.2338
Autor:
Veldhorst, M., Hwang, J. C. C., Yang, C. H., Leenstra, A. W., de Ronde, B., Dehollain, J. P., Muhonen, J. T., Hudson, F. E., Itoh, K. M., Morello, A., Dzurak, A. S.
Publikováno v:
Nature Nanotechnology 9, 981 (2014)
Exciting progress towards spin-based quantum computing has recently been made with qubits realized using nitrogen-vacancy (N-V) centers in diamond and phosphorus atoms in silicon, including the demonstration of long coherence times made possible by t
Externí odkaz:
http://arxiv.org/abs/1407.1950
Autor:
Prest, M J, Richardson-Bullock, J S, Zhao, Q T, Muhonen, J T, Gunnarsson, D, Prunnila, M, Shah, V A, Whall, T E, Parker, E H C, Leadley, D R
We demonstrate electron cooling in silicon using platinum silicide as a superconductor contact to selectively remove the highest energy electrons. The superconducting critical temperature of bulk PtSi is reduced from around 1 K to 0.79 K using a thin
Externí odkaz:
http://arxiv.org/abs/1405.4119
We investigate single quasiparticle excitation dynamics on a small superconducting aluminum island connected to normal metallic leads by tunnel junctions. We find the island to be free of excitations within the measurement resolution allowing us to d
Externí odkaz:
http://arxiv.org/abs/1212.2755
Autor:
Prest, M. J., Muhonen, J. T., Prunnila, M., Gunnarsson, D., Shah, V. A., Richardson-Bullock, J. S., Dobbie, A., Myronov, M., Morris, R. J. H., Whall, T. E., Parker, E. H. C., Leadley, D. R.
Publikováno v:
Applied Physics Letters 99, 251908 (2011)
Enhanced electron cooling is demonstrated in a strained-silicon/superconductor tunnel junction refrigerator of volume 40 um^3. The electron temperature is reduced from 300 mK to 174 mK, with the enhancement over an unstrained silicon control (300 mK
Externí odkaz:
http://arxiv.org/abs/1111.0465
A small magnetic field is found to enhance relaxation processes in a superconductor thus stabilizing superconductivity in non-equilibrium conditions. In a normal-metal (N) - insulator - superconductor (S) tunnel junction, applying a field of the orde
Externí odkaz:
http://arxiv.org/abs/1108.1544
Autor:
Muhonen, J. T., Prest, M. J., Prunnila, M., Gunnarsson, D., Shah, V. A., Dobbie, A., Myronov, M., Morris, R. J. H., Whall, T. E., Parker, E. H. C., Leadley, D. R.
Publikováno v:
Appl. Phys. Lett. 98, 182103 (2011)
We demonstrate significant modification of the electron-phonon energy loss rate in a many-valley semiconductor system due to lattice mismatch induced strain. We show that the thermal conductance from the electron system to the phonon bath in strained
Externí odkaz:
http://arxiv.org/abs/1101.5889