Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Rozen J"'
Autor:
Poletto, S., Gambetta, Jay M., Merkel, Seth T., Smolin, John A., Chow, Jerry M., Corcoles, A. D., Keefe, George A., Rothwell, Mary B., Rozen, J. R., Abraham, D. W., Rigetti, Chad, Steffen, M.
Publikováno v:
Phys. Rev. Lett. 109, 240505 (2012)
We report a system where fixed interactions between non-computational levels make bright the otherwise forbidden two-photon 00 --> 11 transition. The system is formed by hand selection and assembly of two discrete component transmon-style superconduc
Externí odkaz:
http://arxiv.org/abs/1208.1287
Autor:
Rigetti, Chad, Poletto, Stefano, Gambetta, Jay M., Plourde, B. L. T., Chow, Jerry M., Corcoles, A. D., Smolin, John A., Merkel, Seth T., Rozen, J. R., Keefe, George A., Rothwell, Mary B., Ketchen, Mark B., Steffen, M.
Publikováno v:
Phys. Rev. B 86, 100506(R) (2012)
We report a superconducting artificial atom with an observed quantum coherence time of T2*=95us and energy relaxation time T1=70us. The system consists of a single Josephson junction transmon qubit embedded in an otherwise empty copper waveguide cavi
Externí odkaz:
http://arxiv.org/abs/1202.5533
Autor:
Chow, Jerry M., Gambetta, Jay M., Corcoles, A. D., Merkel, Seth T., Smolin, John A., Rigetti, Chad, Poletto, S., Keefe, George A., Rothwell, Mary B., Rozen, J. R., Ketchen, Mark B., Steffen, M.
Publikováno v:
Phys. Rev. Lett. 109, 060501 (2012)
We use quantum process tomography to characterize a full universal set of all-microwave gates on two superconducting single-frequency single-junction transmon qubits. All extracted gate fidelities, including those for Clifford group generators, singl
Externí odkaz:
http://arxiv.org/abs/1202.5344
Autor:
Córcoles, Antonio D., Chow, Jerry M., Gambetta, Jay M., Rigetti, Chad, Rozen, J. R., Keefe, George A., Rothwell, Mary Beth, Ketchen, Mark B., Steffen, M.
Publikováno v:
Appl. Phys. Lett. 99, 181906 (2011)
We characterize a superconducting qubit before and after embedding it along with its package in an absorptive medium. We observe a drastic improvement in the effective qubit temperature and over a tenfold improvement in the relaxation time up to 5.7
Externí odkaz:
http://arxiv.org/abs/1108.1383
Autor:
Chow, Jerry M., Corcoles, A. D., Gambetta, Jay M., Rigetti, Chad, Johnson, B. R., Smolin, John A., Rozen, J. R., Keefe, George A., Rothwell, Mary B., Ketchen, Mark B., Steffen, M.
Publikováno v:
Phys. Rev. Lett. 107, 080502 (2011)
We demonstrate an all-microwave two-qubit gate on superconducting qubits which are fixed in frequency at optimal bias points. The gate requires no additional subcircuitry and is tunable via the amplitude of microwave irradiation on one qubit at the t
Externí odkaz:
http://arxiv.org/abs/1106.0553
Autor:
Steffen, Matthias, Kumar, Shwetank, DiVincenzo, David P., Rozen, J. R., Keefe, George A., Rothwell, Mary Beth, Ketchen, Mark B.
We measure the coherence of a new superconducting qubit, the {\em low-impedance flux qubit}, finding $T_2^* \sim T_1 \sim 1.5\mu$s. It is a three-junction flux qubit, but the ratio of junction critical currents is chosen to make the qubit's potential
Externí odkaz:
http://arxiv.org/abs/1003.3054
Autor:
Koch, R. H., Rozen, J. R., Keefe, G. A., Milliken, F. M., Tsuei, C. C., Kirtley, J. R., DiVincenzo, D. P.
We introduce a new Josephson junction circuit for which quantum operations are realized by low-bandwidth, nearly adiabatic magnetic-flux pulses. Coupling to the fundamental mode of a superconducting transmission line permits a stabilization of the ro
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411380
Autor:
Sharma, Y.K., Ahyi, A.C., Issacs-Smith, T., Shen, X., Pantelides, S.T., Zhu, X., Feldman, L.C., Rozen, J., Williams, J.R.
Publikováno v:
In Solid State Electronics 2012 68:103-107
Publikováno v:
In International Journal of Thermal Sciences 2010 49(9):1561-1566
Publikováno v:
Journal of Applied Physics; Mar2011, Vol. 109 Issue 6, p064514, 12p, 1 Diagram, 1 Chart, 8 Graphs