Methods for quantum processing

Electrical computers: arithmetic processing and calculating – Electrical analog calculating computer – Particular function performed

Reexamination Certificate

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Reexamination Certificate

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07613764

ABSTRACT:
A method for performing a coupling operation between a quantum device and a qubit is provided. The quantum device is coupled to a superconducting bus. The method includes placing a controllable coupling mechanism into a coupled state, thereby coupling the quantum device and the qubit to each other. The quantum device or the qubit is then tuned for a first period of time. Then the controllable coupling mechanism is placed into an uncoupled state, thereby decoupling the quantum device and the qubit from each other.

REFERENCES:
patent: 4370359 (1983-01-01), Fetter et al.
patent: 6838694 (2005-01-01), Esteve et al.
patent: 2004/0077503 (2004-04-01), Blais et al.
patent: 2004/0238813 (2004-12-01), Lidar et al.
patent: 2005/0082519 (2005-04-01), Amin et al.
U.S. Appl. No. 60/556,778, Hilton.
Al-Saidi, W.A., D. Stroud, 2002, “Several small Josephson junctions in a resonant cavity: Deviation from the Dicke model,” Phys. Rev. B 65, 224512.
Averin, D.V., C. Bruder, 2003, “Variable Electrostatic Transformer: Controllable Coupling of Two Charge Qubits,” Phys. Rev. Lett. 91, 57003.
Barenco, A., C.H. Bennett, R. Cleve, D.P. DiVincenzo, N. Margolus, P. Shor, T. Sleator, J.A. Smolin, H. Weinfurter, 1995, “Elementary gates for quantum computation,” Phys. Rev. A 52, pp. 3457-3467.
Berkley, A.J., H. Xu, R.C. Ramos, M.A. Gubrud, F.W. Strauch, P.R. Johnson, J.R. Anderson, A.J. Dragt, C.J. Lobb, F.C. Wellstood, 2003, “Entangled Macroscopic Quantum States in Two Superconducting Qubits,” Science 300, 1548.
Blais, A., A.M. Zagoskin, 2000, “Operation of universal gates in a solid-state quantum computer based on clean Josephson junctions betweend-wave superconductors,” Phys. Rev. A 61, 042308.
Born, D., T. Wagner, W. Krech, U. Hübner, L. Fritzsch, 2001, “Fabrication of Ultrasmall Tunnel Junctions by Electron Beam Direct-Writing,” IEEE Trans. Appl. Supercond. 11, 373.
Buisson, O., F.W.J. Hekking, 2000, “Entangled states in a Josephson charge qubit coupled to a superconducting resonator,” arXiv.org:cond-mat/0008275.
DiVincenzo, D.P., 2000, “The Physical Implementation of Quantum Computation,” Fortschr. Phys. 48, p. 771-783.
Dolan, G.J., 1977, “Offset masks for lift-off photoprocessing,” Appl. Phys. Lett. 31, pp. 337-339.
Friedman, J.R., V. Patel, W. Chen, S.K. Tolpygo, J.E. Lukens, 2000, “Quantum superposition of distinct macroscopic states,” Nature 406, 43.
Han, S., Y. Yu, X. Chu, S.I. Chu, Z. Wang, 2001, “Time-Resolved Measurement of Dissipation-Induced Decoherence in a Josephson Junction,” Science 293, 1457.
Hu, X., R. de Sousa, S. Das Sarma, 2001, “Decoherence and dephasing in spin-based solid state quantum computers,” arXiv.org:cond-mat/0108339v2.
Joyez, P., P. Lafarge, A. Filipe, D. Esteve. M.H. Devoret, 1994, “Observation of Parity-Induced Suppression of Josephson Tunneling in the Superconducting Single Electron Transistor,” Phys. Rev. Lett. 72, 2458.
Koval, Y., A. Wallraff, M. Fistul, N. Thyssen, H. Kohlstedt, A.V. Ustinov, 1999, “Narrow Long Josephson Junctions,” IEEE Trans. Appl. Supercond. 9, 3957.
Leggett, A.J., S. Chakravarty, A.T. Dorsey, M.P.A. Fisher, A. Garg, W. Zwerger, 1987, “Dynamics of the dissipative two-state system,” Rev. Mod. Phys. 59, pp. 1-85.
Majer, J.B., 2002, “Superconducting Quantum Circuits,” Thesis, Delft University of Technology, pp. 12-13.
Makhlin Y., G. Schön, and A. Shnirman, 2001, “Quantum-State Engineering with Josephson-Junction Devices,” Rev. of Mod. Phys. 73, pp. 357-401.
Martinis, J.M., S. Nam, J. Aumentado, C. Urbina, 2002, “Decoherence of a superconducting qubti from bias noise,” American Physical Society 2002 Annual meeting preprint.
Mooij, J.E., T.P. Orlando, L. Levitov, L. Tian, C.H. van der Waal, S. Lloyd, 1999, “Josephson Persistent-Current Qubit,” Science 285, pp. 1036-1039.
Nakamura, Y., Y.A. Pashkin, J.S. Tsai, 1999, “Coherent control of macroscopic quantum states in a single-Cooper-pair box,” Nature 398, 786.
Nielsen, M.A., I.L. Chuang, 2000,Quantum Computation and Quantum Information, Cambridge University Press, Cambridge, UK, pp. 188-202.
Orlando, T.P., J.E. Mooij, L. Tian, C.H. van der Waal, L.S. Levitov, S. Lloyd, J.J. Mazo, 1999, “Superconducting persistent-current qubit,” Phys. Rev. B 60, 15398.
Paauw, F.G., 2002, “Spectroscopy experiments on two coupled Josephson persistent current qubits,” Thesis, Delft University of Technology, pp. 34-36, 58-60.
Pashkin, Y.A., T. Yamamoto, O. Astafiev, Y. Nakamura, D.V. Averin, J.S. Tsai, 2003, “Quantum oscillations in two coupled charge qubits,” Nature 421, 823.
Van der Waal; C.H., A.C.J. ter Haar, F.K. Wilhelm, R.N. Schouten, C.J.P.M. Harmans, T.P. Orlando, S. Lloyd, J.E. Mooij, 2000, “Quantum Superposition of Macroscopic Persistent-Current States,” Science 290, 773.
Vion, D., A. Aassime, A. Cottet, P. Joyez, H. Pothier, C. Urbina, D. Esteve, M.H. Devoret, 2002, “Manipulating the Quantum State of an Electrical Circuit,” Science 296, 886.
Wallraff, A., 2000, “Fluxon Dynamics in Annular Josephson Junctions: Form Relativistic Strings to Quantum Particles,” Thesis, Friedrich-Alexander University of Erlangen-Nürnberg, pp. 20-21.
Yamamoto, T., Y.A. Pashkin, O. Astafiev, Y. Nakamura, J.S. Tsai, 2003, “Demonstration of conditional gate operation using superconducting charge qubits,” Nature 425, 941.
Zurek, W.H., 1991, “Decoherence and the Transition from Quantum to Classical,” Physics Today 44, pp. 36-44.

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