Tinkham, M. Introduction to Superconductivity (McGraw-Hill, New York, 1996). Google Scholar
Devoret, M. H. in Quantum Fluctuations: Les Houches Session LXIII (eds Reynaud, S., Giacobino, E. & David, F.) 351–386 (Elsevier, Amsterdam, 1997). Google Scholar
Voss, R. F. & Webb, R. A. Macroscopic quantum tunneling in 1-µm Nb Josephson junctions. Phys. Rev. Lett.47, 265–268 (1981). ArticleCASADS Google Scholar
Devoret, M. H., Martinis, J. M. & Clarke, J. Measurements of macroscopic quantum tunneling out of the zero-voltage state of a current-biased Josephson junction. Phys. Rev. Lett.55, 1908–1911 (1985). ArticleCASADS Google Scholar
Caldeira, A. O. & Leggett, A. J. Quantum tunneling in a dissipative system. Ann. Phys. (NY)149, 374–456 (1983). ArticleADS Google Scholar
Martinis, J. M., Devoret, M. H. & Clarke, J. Energy-level quantization in the zero-voltage state of a current-biased Josephson junction. Phys. Rev. Lett.55, 1543–1546 (1985). ArticleCASADS Google Scholar
Leggett, A. J. in Chance and Matter: Les Houches Session XLVI (eds Souletie, J., Vannimenus, J. & Stora, R.) 395–506 (Elsevier, Amsterdam, 1987). Google Scholar
Nakamura, Y., Chen, C. D. & Tsai, J. S. Spectroscopy of energy-level splitting between two macroscopic quantum states of charge coherently superposed by Josephson coupling. Phys. Rev. Lett.79, 2328–2331 (1997). ArticleCASADS Google Scholar
Friedman, J. R., Patel, V., Chen, W., Tolpygo, S. K. & Lukens, J. E. Quantum superpositions of distinct macroscopic states. Nature406, 43–46 (2000). ArticleCASADS Google Scholar
van der Wal, C. H. et al. Quantum superpositions of macroscopic persistent current. Science290, 773–776 (2000). ArticleCASADS Google Scholar
Vion, D. et al. Manipulating the quantum state of an electrical circuit. Science296, 886–889 (2002). ArticleCASADS Google Scholar
Martinis, J. M., Nam, S., Aumentado, J. & Urbina, C. Rabi oscillations in a large Josephson-junction qubit. Phys. Rev. Lett.89, 117901 (2002). ArticleADS Google Scholar
The SQUID Handbook: Fundamentals and Technology of SQUIDs and SQUID Systems Vol. I (eds Clarke, J. & Braginski, A. I.) (Wiley, Weinheim, 2004).
Wilhelm, F. K. et al. Macroscopic quantum superposition of current states in a Josephson junction loop. Usp. Fiz.Nauk44 (suppl. 171), 117–121 (2001). Google Scholar
Devoret, M. H. & Schoelkopf, R., Amplifying quantum signals with the single-electron transistor. Nature406, 1039–1046 (2000). ArticleCAS Google Scholar
Schoelkopf, R. J., Wahlgren, P., Kozhevnikov, A. A., Delsing, P. & Prober, D. E. The radio-frequency single-electron transistor (RF-SET): a fast and ultrasensitive electrometer. Science280, 1238–1242 (1998). ArticleCASADS Google Scholar
Bouchiat, V., Vion, D., Joyez, P., Esteve, D. & Devoret, M. H. Quantum coherence with a single Cooper pair. Physica ScriptaT76, 165–170 (1998). ArticleCASADS Google Scholar
Nakamura, Y., Pashkin, Y. A. & Tsai, J. S., Coherent control of macroscopic quantum states in a single-Cooper-pair box. Nature398, 786–788 (1999). ArticleCASADS Google Scholar
Koch, J. et al. Charge-insensitive qubit design derived from the Cooper pair box. Phys. Rev. A76, 042319 (2007). ArticleADS Google Scholar
Ithier, G. et al. Decoherence in a superconducting quantum bit circuit Phys. Rev. B72, 134519 (2005). ArticleADS Google Scholar
Siddiqi, I. et al. Direct observation of dynamical bifurcation between two driven oscillation states of a Josephson junction. Phys. Rev. Lett.94, 027005 (2005). ArticleCASADS Google Scholar
Braginsky, V. B., Khalili, F. Y. & Thorne, K. S. Quantum Measurement (Cambridge Univ. Press, Cambridge, UK, 1995). Google Scholar
Lupas¸ cu, A. et al. Quantum non-demolition measurement of a superconducting two-level system. Nature Phys.3, 119–125 (2007). ArticleADS Google Scholar
Grajcar, M. et al. Low-frequency measurement of the tunneling amplitude in a flux qubit. Phys. Rev. B69, 060501 (2004). ArticleADS Google Scholar
Cooper, K. B. et al. Observation of quantum oscillations between a Josephson phase qubit and a microscopic resonator using fast readout. Phys. Rev. Lett.93, 180401 (2004). ArticleCASADS Google Scholar
Slichter C. P. Principles of Nuclear Magnetic Resonance 3rd edn (Springer, New York, 1990). Book Google Scholar
Makhlin, Y., Schön, G. & Shnirman, A. Quantum-state engineering with Josephson-junction devices. Rev. Mod. Phys.73, 357–400 (2001). ArticleADS Google Scholar
Wilhelm, F. K., Hartmann, U., Storcz, M. J. & Geller, M. R. in Manipulating Quantum Coherence in Solid State Systems (eds Flatté, M. E. & Tifrea, I.) 195–233 (Springer, Dordrecht, 2007). Book Google Scholar
Ramsey, N. F. A molecular beam resonance method with separated oscillating fields. Phys. Rev.78, 695–699 (1950). ArticleCASADS Google Scholar
Steffen, M. et al. State tomography of capacitively shunted phase qubits with high fidelity. Phys. Rev. Lett.97, 050502 (2006). ArticleADS Google Scholar
Dutta, P. & Horn, P. M. Low frequency fluctuations in solids: 1/f noise. Rev. Mod. Phys.53, 497–516 (1981). ArticleCASADS Google Scholar
van Harlingen, D. J. et al. Decoherence in Josephson-junction qubits due to critical-current fluctuations. Phys. Rev. B70, 064517 (2004). ArticleADS Google Scholar
Wellstood, F. C., Urbina, C. & Clarke, J. Low-frequency noise in dc superconducting quantum interference devices below 1 K. Appl.Phys. Lett.50, 772–774 (1987). CAS Google Scholar
Koch, R. H., DiVincenzo, D. P. & Clarke, J. Model for 1/f flux noise in SQUIDs and qubits. Phys. Rev. Lett.98, 267003 (2007). ArticleADS Google Scholar
Faoro, L. & Ioffe, L. B. Microscopic origin of low-frequency flux noise in Josephson circuits. Preprint at <http://arxiv.org/abs/0712.2834> (2007).
Simmonds, R. W., Lang, K. M., Hite, D. A., Pappas, D. P. & Martinis, J. M. Decoherence in Josephson qubits from junction resonances. Phys. Rev. Lett.93, 077033 (2004). ArticleADS Google Scholar
Martinis, J. M. et al. Decoherence in Josephson qubits from dielectric loss. Phys. Rev. Lett.95, 210503 (2005). ArticleADS Google Scholar
Nakamura, Y., Pashkin, Y. A., Yamamoto, T. & Tsai, J. S. Charge echo in a Cooper-pair box. Phys. Rev. Lett.88, 047901 (2002). ArticleCASADS Google Scholar
Bertet, P. et al. Relaxation and dephasing in a flux-qubit. Phys. Rev. Lett.95, 257002 (2005). ArticleCASADS Google Scholar
Astafiev, O., Pashkin, Y. A., Nakamura, Y., Yamamoto, T. & Tsai, J. S. Quantum noise in the Josephson charge qubit. Phys. Rev. Lett.93, 267007 (2004). ArticleCASADS Google Scholar
Berkley, A.J. et al. Entangled macroscopic quantum states in two superconducting qubits. Science300, 1548–1550 (2003). ArticleCASADS Google Scholar
Majer, J. B., Paauw, F. G., ter Haar, A. C. J., Harmans, C. J. P. M. & Mooij, J. E. Spectroscopy of coupled flux qubits. Phys. Rev. Lett.94, 090501 (2005). ArticleCASADS Google Scholar
Pashkin, Y. A. et al. Quantum oscillations in two coupled charge qubits. Nature421, 823–826 (2003). ArticleCASADS Google Scholar
McDermott, R. et al. Simultaneous state measurement of coupled Josephson phase qubits. Science307, 1299–1302 (2005). ArticleCASADS Google Scholar
Steffen, M. et al. Measurement of the entanglement of two superconducting qubits via state tomography. Science313, 1423–1425 (2006). ArticleCASADSMathSciNet Google Scholar
Yamamoto, Y., Pashkin, Y. A., Astafiev, O., Nakamura, Y. & Tsai, J. S. Demonstration of conditional gate operation using superconducting charge qubits. Nature425, 941–944 (2003). ArticleCASADS Google Scholar
Plantenberg, J. H., de Groot, P. C., Harmans, C. J. & Mooij, J. E. Demonstration of controlled-NOT quantum gates on a pair of superconducting quantum bits. Nature447, 836–839 (2007). ArticleCASADS Google Scholar
Plourde, B. L. T. et al. Entangling flux qubits with a bipolar dynamic inductance. Phys. Rev. B70, 140501 (2004).
Hime, T. et al. Solid-state qubits with current-controlled coupling. Science314, 1427–1429 (2006). ArticleCASADS Google Scholar
Niskanen, A. O. et al. Quantum coherent tunable coupling of superconducting qubits. Science316, 723–726 (2007). ArticleCASADS Google Scholar
Averin, D. V. & Bruder, C. Variable electrostatic transformer controllable coupling of two charge qubits. Phys. Rev. Lett.91, 057003 (2003). ArticleCASADS Google Scholar
Bertet, P., Harmans, C. J. P.M. & Mooij, J. E. Parametic coupling for superconducting qubits. Phys. Rev. B73, 064512 (2006). ArticleADS Google Scholar
Rigetti, C., Blais, A. & Devoret, M. Protocol for universal gates in optimally biased superconducting qubits. Phys. Rev. Lett.94, 240502 (2005). ArticleADS Google Scholar
Liu, Y.-x., Wei, L. F., Tsai, J. S. & Nori, F. Controllable coupling between flux qubits. Phys. Rev. Lett.96, 067003 (2006). ArticleADS Google Scholar
Makhlin, Y., Schön, G. & Shnirman, A. Josephson-junction qubits with controlled couplings. Nature398, 305–307 (1999). ArticleCASADS Google Scholar
Wei, L. F., Liu, Y.-x. & Nori, F. Quantum computation with Josephson qubits using a current-biased information bus. Phys. Rev. B71, 134506 (2005). ArticleADS Google Scholar
Lantz, J., Wallquist, M., Shumeiko, V. S. & Wendin, G. Josephson junction qubit network with current-controlled interaction. Phys. Rev. B70, 140507 (2004). ArticleADS Google Scholar
Blais, A., Huang, R.-S., Wallraff, A., Girvin, S. M. & Schoelkopf, R. J. Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation. Phys. Rev. A69, 062320 (2004). ArticleADS Google Scholar
Helmer, F. et al. Two-dimensional cavity grid for scalable quantum computation with superconducting circuits. Preprint at <http://arxiv.org/abs/0706.3625> (2007).
Majer, J. B. et al. Coupling superconducting qubits via a cavity bus. Nature449, 443–447 (2007). ArticleCASADS Google Scholar
Sillanpaa, M. A., Park, J. I. & Simmonds, R. W. Coherent quantum state storage and transfer between two phase qubits via a resonant cavity. Nature449, 438–442 (2007). ArticleADS Google Scholar
Fowler, A. G. et al. Long-range coupling and scalable architecture for superconducting flux qubits. Phys. Rev. B76, 174507 (2007). ArticleADS Google Scholar
Grajcar, M. et al. Four-qubit device with mixed couplings. Phys. Rev. Lett.96, 047006 (2006). ArticleCASADS Google Scholar
Devoret, M. H. et al. in Quantum Tunneling in Condensed Media (eds Kagan, Y. & Leggett, A. J.) 313–345 (Elsevier, Amsterdam, 1992). Book Google Scholar
Haroche, S. & Kleppner, D. Cavity quantum electrodynamics. Phys. Today42, 24–26 (1989). ArticleCASADS Google Scholar
Wallraff, A. et al. Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics. Nature431, 162–167 (2004). ArticleCASADS Google Scholar
Johansson, J. et al. Vacuum Rabi oscillations in a macroscopic superconducting qubit LC oscillator system. Phys. Rev. Lett.96, 127006 (2006). ArticleCASADS Google Scholar
Schuster, D. I. et al. Resolving photon number states in a superconducting circuit. Nature445, 515–518 (2007). ArticleCASADS Google Scholar
Houck, A. A. et al. Generating single microwave photons in a circuit. Nature449, 443–447 (2007). ArticleADS Google Scholar
Valenzuela, S. O. et al. Microwave-induced cooling of a superconducting qubit. Science314, 1589–1592 (2006). ArticleCASADS Google Scholar
Gracjar, M. et al. Sisyphus damping and amplification by a superconducting qubit. Preprint at <http://arxiv.org/abs/0708.0665> (2007).
Clauser, J. F., Horne, M. A., Shimony, A. & Holt, R. A. Proposed experiment to test local hidden-variable theories. Phys. Rev. Lett.23, 880–884 (1969). ArticleADS Google Scholar
Leggett, A. J. & Garg, A. Quantum mechanics versus macroscopic realism: is the flux there when nobody looks? Phys. Rev. Lett.54, 857–860 (1985). ArticleCASADSMathSciNet Google Scholar
Bennett, C. H. et al. Teleporting an unknown quantum state via dual classical and Einstein–Podolsky–Rosen channels. Phys. Rev. Lett.70 1895–1899 (1993). ArticleCASADSMathSciNet Google Scholar
Schreier, J. A. et al. Suppressing charge noise decoherence in superconducting charge qubits. Phys. Rev. B77, 180502 (2008). ArticleADS Google Scholar
Duty, T., Gunnarson, D., Bladh, K. & Delsing, P. Coherent dynamics of a Josephson charge qubit. Phys. Rev. B69, 140503 (2004). ArticleADS Google Scholar
Dolan, G. J. Offset masks for liftoff photoprocessing. Appl. Phys. Lett.31, 337–339 (1977). ArticleADS Google Scholar