Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction
Reexamination Certificate
2006-02-21
2006-02-21
Flynn, Nathan J. (Department: 2826)
Active solid-state devices (e.g., transistors, solid-state diode
Thin active physical layer which is
Heterojunction
C257S009000, C257S031000, C257S032000, C257S035000
Reexamination Certificate
active
07002174
ABSTRACT:
A structure comprising a tank circuit inductively coupled to a flux qubit or a phase qubit. In some embodiments, a low temperature preamplifier is in electrical communication with the tank circuit. The tank circuit comprises an effective capacitance and an effective inductance that are in parallel or in series. In some embodiments, the effective inductance comprises a multiple winding coil of wire. A method that includes the steps of (i) providing a tank circuit and a phase qubit that are inductively coupled, (ii) reading out a state of the phase qubit, (iii) applying a flux to the phase qubit that approaches a net zero flux, (iv) increasing a level of flux applied to the phase qubit, and (v) observing a response of the tank circuit in a readout device.
REFERENCES:
patent: 3573759 (1971-04-01), Silver et al.
patent: 5768297 (1998-06-01), Shor
patent: 6459097 (2002-10-01), Zagoskin
patent: 2002/0117656 (2002-08-01), Amin et al.
patent: 2002/0188578 (2002-12-01), Amin et al.
patent: 2003/0071258 (2003-04-01), Zagoskin et al.
patent: 2003/0193097 (2003-10-01), Il'ichev et al.
Rifkin et al. (IDS ref. BB).
Makhlin et al. (IDS ref. AX).
Mooij et al. (IDS ref. AY).
Zorin (IDS ref. BI).
U.S. Appl. No. 60/429,170, Amin et al.
Bocko, M.F., A.M. Herr, and M.J. Feldman, 1997, “Prospects for Quantum Coherent Computation Using Superconducting Effects,” IEEE Trans. Appl. Supercond. 7, pp. 3638-3641.
Castellano, M.G., F. Chiarello, C. Cosmelli, P. Carelli, and G. Torrioli, “A Squid Switch for a Macroscopic Quantum Coherence Experiment,” Inst. Phys. Conf. Ser. No. 167, pp. 593-596 (2000).
DiVincenzo, D.P., 2000, “The Physical Implementation of Quantum Computation,” ArXiv.org preprint server: quant-ph/0002077.
Friedman, J.R., and D.V. Averin, 2002, “Aharonov-Casher-Effect Suppression of Macroscopic Tunneling of Magnetic Flux,” Phys. Rev. Lett. 88, 050403.
Friedman, J.R., V. Patel, W. Chen, S.K. Tolpygo and J.E. Lukens, 2000, “Quantum superposition of distinct macroscopic states,” Nature 406, pp. 43-46.
Greenberg, Ya.S., A. Izmalkov, M. Grajcar, E. Il'ichev, W. Krech, H.-G. Meyer, M.H.S. Amin, Alec Maassen van den Brink, 2002, “Low-frequency characterization of quantum tunneling in Flux qubits,” ArXiv.org preprint server: cond-mat/0208076.
Han, S., Y. Yu, X. Chu, S.-I. Chu, and Z. Wang, 2001, “Time-Resolved Measurement of Dissipation-Induced Decoherence in a Josephson Junction,” Science 293, pp. 1457-1459.
Il'ichev, E., 2001, “Radio-frequency method for characterization of superconducting weak links,” Physica C 350, pp. 244-248.
Il'ichev, E., M. Grajcar, R. Hlubina, R.P.J. IJsselsteijn, H.E. Hoenig, H.-G. Meyer, A. Golubov, M.H.S. Amin, A.M. Zagoskin, A.N. Omelyanchouk, and M. Yu. Kupriyanov, 2001, “Degenerate Ground State in a Mesoscopic YBa2Cu3O7-xGrain Boundary Josephson Junction,” Phys. Rev. Lett. 86, pp. 5369-5372.
Il'ichev, E., V. Zakosarenko, L. Fritzsch, R. Stolz, H.E. Hoenig, H.-G. Meyer, M. Gotz, A.B. Zorin, V.V. Khanin, A.B. Pavolotsky, and J. Niemeyer, 2001, “Radio-frequency based monitoring of small supercurrents,” Rev. Sci. Instrum. 72, pp. 1882-1887.
Il'ichev, E., V. Zakosarenko, R.P.J. IJsselsteijn, V. Schultze, H.-G. Meyer, H.E. Hoenig, H. Hilgenkamp, and J. Mannhart, 1998, “Nonsinusoidal Current-Phase Relationship of Grain Boundary Josephson Junctions in High-Tc Superconductors,” Phys. Rev. Lett. 81, pp. 894-897.
Il'ichev, E., V. Zakosarenko, V. Schultze, H.-G. Meyer, H.E Hoenig, V.N. Glyantsev, and A. Golubov, 1998, “Temperature dependence of the current-phase relation for YBa2Cu3O7-xstep-edge Josephson junctions,” App. Phys. Lett. 72, pp. 731-733.
Il'ichev, E., T. Wagner, L. Fritzsch, J. Kunert, V. Schultze, T. May, H.E. Hoenig, H. G. Meyer, M. Grajcar, D. Born, W. Krech, M. V. Fistul and A. M. Zagoskin, 2002, “Characterization of superconducting structures designed for qubit realizations,” Appl. Phys. Lett. 80, pp. 4184-4186.
Ketchen, M.B., 1987, “Integrated Thin Film dc-SQUID sensors,” IEEE Transactions on Magnetics 23, pp. 1650-1657.
Krech, W., D. Born, T. Wagner, and H.-G. Meyer, 2001, “Linear Microwave Response of a Charge-Type Qubit,” IEEE Trans. Appl. Supercond. 11, pp. 1022-1025.
Makhlin, Y., G. Schön, and A. Shnirman, 2001, “Quantum-State Engineering with Josephson-Junction Devices,” Rev. Mod. Phys. 73, pp. 357-400.
Mooij, J. E., T. P. Orlando, L. Levitov, L. Tian, C. H. van der Wal, and S. Lloyd, 1999, “Josephson Persistent-Current Qubit,” Science 285, pp. 1036-1039.
Nakamura, Y., Y.A. Pashkin, and J.S. Tsai, 1999, “Coherent control of macroscopic quantum states in a single-Cooper-pair box,” Nature 398, pp. 786-788.
Orlando, T.P., J. E. Mooij, C.H. van der Wal, L.S. Levitov, S. Lloyd, J.J. Mazo, 1999, “Superconducting persistent-current qubit,” Phys. Rev. B 60, pp. 15398-15413.
Rifkin, R., D.A. Vincent, B.S. Deaver, Jr., and P.K. Hansma, 1976, “rf SQUID's in the nonhysteretic mode: Detailed comparison of theory and experiment,” J. App. Phys 47, pp. 2645-2650.
Silver, A.H., and J.E. Zimmerman, 1967, “Quantum States and Transitions in Weakly Connected Superconducting Rings,” Phys. Rev 157, pp. 317-341.
Stolz, R., L. Fritsch, and H.-G. Meyer, 1999, “LTS SQUID sensor with a new configuration,” Supercon. Sci. Tech. 12, pp. 806-808.
Van der Wal, C.H., A.C.J. ter Haar, F.K. Wilhelm, R.N. Schouten, C.J.P.M. Harmans, T.P. Orlando, S. Lloyd and J.E. Mooij, 2000, “Quantum Superposition of Macroscopic Persistent-Current States,” Science 290, pp. 773-777.
Zhang, Y., M. Gottschlich, H. Soltner, E. Sodtke, J. Schubert, W. Zander, and A.I. Braginski, 1995, “Operation of high-temperature rf SQUID magnetometers using dielectric SrTiO3resonators,” App. Phys. Lett. 67, pp. 3183-3185.
Zhang, Y., N. Wolters, R. Otto and H.-J. Krause, 2002, “Non-constant bias current for dc SQUID operation,” Physica C 368, pp. 181-184.
Zorin, A.B., 1996, “Quantum-Limited Electrometer Based on Single Cooper Pair Tunneling,” Phys. Rev. Lett. 76, pp. 4408-4411.
Zorin, A.B., 2001, “Radio-Frequency Bloch-Transistor Electrometer,” Phys. Rev. Lett. 86, pp. 3388-3391.
Grajcar Miroslav
Il'ichev Evgeni
Steininger Miles F. H.
Zagoskin Alexandre M.
D-Wave Systems Inc.
Day Jones
Flynn Nathan J.
Lovejoy Brett
Wilson Scott R.
LandOfFree
Characterization and measurement of superconducting structures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Characterization and measurement of superconducting structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterization and measurement of superconducting structures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3631503