Zobrazeno 1 - 10
of 574
pro vyhledávání: '"Wenner J"'
Autor:
Klimov, P. V., Kelly, J., Chen, Z., Neeley, M., Megrant, A., Burkett, B., Barends, R., Arya, K., Chiaro, B., Chen, Yu, Dunsworth, A., Fowler, A., Foxen, B., Gidney, C., Giustina, M., Graff, R., Huang, T., Jeffrey, E., Lucero, Erik, Mutus, J. Y., Naaman, O., Neill, C., Quintana, C., Roushan, P., Sank, Daniel, Vainsencher, A., Wenner, J., White, T. C., Boixo, S., Babbush, R., Smelyanskiy, V. N., Neven, H., Martinis, John M.
Publikováno v:
Phys. Rev. Lett. 121, 090502 (2018)
Superconducting qubits are an attractive platform for quantum computing since they have demonstrated high-fidelity quantum gates and extensibility to modest system sizes. Nonetheless, an outstanding challenge is stabilizing their energy-relaxation ti
Externí odkaz:
http://arxiv.org/abs/1809.01043
Autor:
Foxen, B., Mutus, J. Y., Lucero, E., Jeffrey, E., Sank, D., Barends, R., Arya, K., Burkett, B., Chen, Yu, Chen, Zijun, Chiaro, B., Dunsworth, A., Fowler, A., Gidney, C., Giustina, M., Graff, R., Huang, T., Kelly, J., Klimov, P., Megrant, A., Naaman, O., Neeley, M., Neill, C., Quintana, C., Roushan, P., Vainsencher, A., Wenner, J., White, T. C., Martinis, John M.
We develop a high speed on-chip flux measurement using a capacitively shunted SQUID as an embedded cryogenic transducer and apply this technique to the qualification of a near-term scalable printed circuit board (PCB) package for frequency tunable su
Externí odkaz:
http://arxiv.org/abs/1808.09612
Autor:
Dunsworth, A., Megrant, A., Barends, R., Chen, Yu, Chen, Zijun, Chiaro, B., Fowler, A., Foxen, B., Jeffrey, E., Kelly, J., Klimov, P. V., Lucero, E., Mutus, J. Y., Neeley, M., Neill, C., Quintana, C., Roushan, P., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Neven, H., Martinis, John M.
Complex integrated circuits require multiple wiring layers. In complementary metal-oxide-semiconductor (CMOS) processing, these layers are robustly separated by amorphous dielectrics. These dielectrics would dominate energy loss in superconducting in
Externí odkaz:
http://arxiv.org/abs/1712.01671
Autor:
Roushan, P., Neill, C., Tangpanitanon, J., Bastidas, V. M., Megrant, A., Barends, R., Chen, Y., Chen, Z., Chiaro, B., Dunsworth, A., Fowler, A., Foxen, B., Giustina, M., Jeffrey, E., Kelly, J., Lucero, E., Mutus, J., Neeley, M., Quintana, C., Sank, D., Vainsencher, A., Wenner, J., White, T., Neven, H., Angelakis, D. G., Martinis, J.
Statistical mechanics is founded on the assumption that a system can reach thermal equilibrium, regardless of the starting state. Interactions between particles facilitate thermalization, but, can interacting systems always equilibrate regardless of
Externí odkaz:
http://arxiv.org/abs/1709.07108
Autor:
Neill, C., Roushan, P., Kechedzhi, K., Boixo, S., Isakov, S. V., Smelyanskiy, V., Barends, R., Burkett, B., Chen, Y., Chen, Z., Chiaro, B., Dunsworth, A., Fowler, A., Foxen, B., Graff, R., Jeffrey, E., Kelly, J., Lucero, E., Megrant, A., Mutus, J., Neeley, M., Quintana, C., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Neven, H., Martinis, J. M.
Fundamental questions in chemistry and physics may never be answered due to the exponential complexity of the underlying quantum phenomena. A desire to overcome this challenge has sparked a new industry of quantum technologies with the promise that e
Externí odkaz:
http://arxiv.org/abs/1709.06678
Autor:
Foxen, B., Mutus, J. Y., Lucero, E., Graff, R., Megrant, A., Chen, Yu, Quintana, C., Burkett, B., Kelly, J., Jeffrey, E., Yang, Yan, Yu, Anthony, Arya, K., Barends, R., Chen, Zijun, Chiaro, B., Dunsworth, A., Fowler, A., Gidney, C., Giustina, M., Huang, T., Klimov, P., Neeley, M., Neill, C., Roushan, P., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Martinis, John M.
We present a fabrication process for fully superconducting interconnects compatible with superconducting qubit technology. These interconnects allow for the 3D integration of quantum circuits without introducing lossy amorphous dielectrics. They are
Externí odkaz:
http://arxiv.org/abs/1708.04270
Autor:
Dunsworth, A., Megrant, A., Quintana, C., Chen, Zijun, Barends, R., Burkett, B., Foxen, B., Chen, Yu, Chiaro, B., Fowler, A., Graff, R., Jeffrey, E., Kelly, J., Lucero, E., Mutus, J. Y., Neeley, M., Neill, C., Roushan, P., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Martinis, John M.
Josephson junctions form the essential non-linearity for almost all superconducting qubits. The junction is formed when two superconducting electrodes come within $\sim$1 nm of each other. Although the capacitance of these electrodes is a small fract
Externí odkaz:
http://arxiv.org/abs/1706.00879
Autor:
Quintana, C. M., Chen, Yu, Sank, D., Petukhov, A. G., White, T. C., Kafri, Dvir, Chiaro, B., Megrant, A., Barends, R., Campbell, B., Chen, Z., Dunsworth, A., Fowler, A. G., Graff, R., Jeffrey, E., Kelly, J., Lucero, E., Mutus, J. Y., Neeley, M., Neill, C., O'Malley, P. J. J., Roushan, P., Shabani, A., Smelyanskiy, V. N., Vainsencher, A., Wenner, J., Neven, H., Martinis, John M.
Publikováno v:
Phys. Rev. Lett. 118, 057702 (2017)
By analyzing the dissipative dynamics of a tunable gap flux qubit, we extract both sides of its two-sided environmental flux noise spectral density over a range of frequencies around $2k_BT/h \approx 1\,\rm{GHz}$, allowing for the observation of a cl
Externí odkaz:
http://arxiv.org/abs/1608.08752
Autor:
Chiaro, B., Megrant, A., Dunsworth, A., Chen, Z., Barends, R., Campbell, B., Chen, Y., Fowler, A., Hoi, I. C., Jeffrey, E., Kelly, J., Mutus, J., Neill, C., O'Malley, P. J. J., Quintana, C., Roushan, P., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Martinis, John M.
Surface distributions of two level system (TLS) defects and magnetic vortices are limiting dissipation sources in superconducting quantum circuits. Arrays of flux-trapping holes are commonly used to eliminate loss due to magnetic vortices, but may in
Externí odkaz:
http://arxiv.org/abs/1607.05841
Autor:
Sank, Daniel, Chen, Zijun, Khezri, Mostafa, Kelly, J., Barends, R., Campbell, B., Chen, Y., Chiaro, B., Dunsworth, A., Fowler, A., Jeffrey, E., Lucero, E., Megrant, A., Mutus, J., Neeley, M., Neill, C., O'Malley, P. J. J., Quintana, C., Roushan, P., Vainsencher, A., Wenner, J., White, T., Korotkov, Alexander N., Martinis, John M.
Publikováno v:
Phys. Rev. Lett. 117, 190503 (2016)
Many superconducting qubit systems use the dispersive interaction between the qubit and a coupled harmonic resonator to perform quantum state measurement. Previous works have found that such measurements can induce state transitions in the qubit if t
Externí odkaz:
http://arxiv.org/abs/1606.05721