Circuit Quantum Electrodynamics

We have built an integrated circuit in which a superconducting “qubit,” or artificial atom, is coupled to a single microwave photon trapped in a superconducting transmission line “cavity.” It has direct analogies with the field of cavity quantum electrodynamics (cavity QED) in quantum optics.

Associated Publications:

  1. Observation of High Coherence in Josephson Junction Qubits Measured in a Three-Dimensional Circuit QED Architecture
    Hanhee Paik, D. I. Schuster, Lev S. Bishop, G. Kirchmair, G. Catelani, A. P. Sears, B. R. Johnson, M. J. Reagor, L. Frunzio, L. I. Glazman, S. M. Girvin, M. H. Devoret, and R. J. Schoelkopf         Phys. Rev. Lett. 107, 240501 (2011) / arxiv:1105.4652 (pdf)
  2. Cavity QED in a molecular ion trap
    D. I. Schuster, Lev S. Bishop, I. L. Chuang, D. DeMille, and R. J. Schoelkopf         Phys. Rev. A 83, 012311 (2011) / arxiv:0903.3552 (pdf)
  3. High-fidelity readout in circuit quantum electrodynamics using the jaynes-cummings nonlinearity
    M. D. Reed, L. DiCarlo, B. R. Johnson, L. Sun, D. I. Schuster, L. Frunzio, and R. J. Schoelkopf     Phys. Rev. Lett. 105, 173601 (2010) / arXiv:1004.4323 (pdf)
  4. Protocol for high-fidelity readout in the photon-blockade regime of circuit QED
    E. Ginossar, Lev S. Bishop, D. I. Schuster, and S. M. Girvin     Phys. Rev. A 82, 022335 (2010) / arXiv:1004.4385 (pdf)
  5. Quantum Non-demolition Detection of Single Microwave Photons in a Circuit
    B. R. Johnson, M. D. Reed, A. A. Houck, D. I. Schuster, Lev S. Bishop, E. Ginossar, J. M. Gambetta, L. DiCarlo, L. Frunzio, S. M. Girvin, R. J. Schoelkopf         Nature Physics 6 , 663–667 (2010) / arXiv:1003.2734 (pdf)
  6. Fast Reset and Suppressing Spontaneous Emission of a Superconducting Qubit
    M. D. Reed, B. R. Johnson, A. A. Houck, L. DiCarlo, J. M. Chow, D. I. Schuster, L. Frunzio, R. J. Schoelkopf         Appl. Phys. Lett. 96, 203110 (2010) / arxiv:1003.0142 (pdf)
  7. Demonstration of two-qubit algorithms with a superconducting quantum processor
    L. DiCarlo, J. M. Chow, J. M. Gambetta, Lev S. Bishop, B. R. Johnson, D. I. Schuster, J. Majer, A. Blais, L. Frunzio, S. M. Girvin and R. J. Schoelkopf.         Nature 460, 240-244 (2009) / arXiv:0903.2030 (pdf)
  8. Controlling the Spontaneous Emission of a Superconducting Transmon Qubit
    A. A. Houck, J. A. Schreier, B. R. Johnson, J. M. Chow, Jens Koch, J. M. Gambetta, D. I. Schuster, L. Frunzio, M. H. Devoret, S. M. Girvin, and R. J. Schoelkopf         Phys. Rev. Lett. 101, 080502 (2008) / arxiv:0803.4490 (pdf)
  9. Suppressing charge noise decoherence in superconducting charge qubits
    J. A. Schreier, A. A. Houck, Jens Koch, D. I. Schuster, B. R. Johnson, J. M. Chow, J. M. Gambetta, J. Majer, L. Frunzio, M. H. Devoret, S. M. Girvin, and R. J. Schoelkopf         Phys. Rev. B 77, 180502(R) (2008) / arxiv:0712.3581 (pdf)
  10. Quantum trajectory approach to circuit QED: Quantum jumps and the Zeno effect
    Jay Gambetta, Alexandre Blais, M. Boissonneault, A. A. Houck, D. I. Schuster, and S. M. Girvin         Phys. Rev. A 77, 012112 (2008) / cond-mat/0709.4264 (pdf)
  11. Observation of Berry's Phase in a Solid-State Qubit
    P. J. Leek, J. M. Fink, A. Blais, R. Bianchetti, M. Göppl, J. M. Gambetta, D. I. Schuster, L. Frunzio, R. J. Schoelkopf, and A. Wallraff         Science 21 V318 #5858, 1889 - 189 (2007) / arxiv:0711.0218 (pdf)
  12. Superconducting circuits are promising candidates for constructing quantum bits (qubits) in a quantum computer; single-qubit operations are now routine, and several examples of two qubit interactions and gates having been demonstrated. These experiments s
    Jens Koch, Terri M. Yu, Jay Gambetta, A. A. Houck, D. I. Schuster, J. Majer, Alexandre Blais, M. H. Devoret, S. M. Girvin, and R. J. Schoelkopf         Phys. Rev. A 76, 042319 (2007) / cond-mat/0703002 (pdf)
  13. Coupling superconducting qubits via a cavity bus
    J. Majer, J. M. Chow, J. M. Gambetta, Jens Koch, B. R. Johnson, J. A. Schreier, L. Frunzio, D. I. Schuster, A. A. Houck, A. Wallraff, A. Blais, M. H. Devoret, S. M. Girvin and R. J. Schoelkopf         Nature 449, 443-447 (2007) / arxiv:0709.2135 (pdf)
  14. Sideband Transitions and Two-Tone Spectroscopy of a Superconducting Qubit Strongly Coupled to an On-Chip Cavity
    A. Wallraff, D. I. Schuster, A. Blais, J. M. Gambetta, J. Schreier, L. Frunzio, M. H. Devoret, S. M. Girvin, and R. J. Schoelkopf         Phys. Rev. Lett. 99, 050501 (2007) / cond-mat/0703632 (pdf)
  15. Generating single microwave photons in a circuit
    A. A. Houck, D. I. Schuster, J. M. Gambetta, J. A. Schreier, B. R. Johnson, J. M. Chow, L. Frunzio, J. Majer, M. H. Devoret, S. M. Girvin and R. J. Schoelkopf         Nature 449, 328-331 (2007) / cond-mat/0702648 (pdf)
  16. Charge-insensitive qubit design derived from the Cooper pair box
    Jens Koch, Terri M. Yu, Jay Gambetta, A. A. Houck, D. I. Schuster, J. Majer, Alexandre Blais, M. H. Devoret, S. M. Girvin, and R. J. Schoelkopf         Phys. Rev. A 76, 042319 (2007) (pdf)
  17. Quantum-information processing with circuit quantum electrodynamics
    Alexandre Blais, Jay Gambetta, A. Wallraff, D. I. Schuster, S. M. Girvin, M. H. Devoret, and R. J. Schoelkopf         Phys. Rev. A 75, 032329 (2007) / cond-mat/0612038 (pdf)
  18. Circuit Quantum Electrodynamics - Thesis
    David I. Schuster         (pdf)
  19. Resolving photon number states in a superconducting circuit
    D. I. Schuster*, A. A. Houck*, J. A. Schreier, A. Wallraff, J. M. Gambetta, A. Blais, L. Frunzio, J. Majer, B. Johnson, M. H. Devoret, S. M. Girvin and R. J. Schoelkopf         Nature (London) Vol 445 515 (2007) / cond-mat/0608693 (pdf)
  20. Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
    A. Wallraff, D. I. Schuster, A. Blais, L. Frunzio, J. Majer, M. H. Devoret, S. M. Girvin and R. J. Schoelkopf         Phys. Rev. Lett. 95, 060501 (2005) / cond-mat/0502645 (pdf)
  21. AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
    D. I. Schuster, A. Wallraff, A. Blais, L. Frunzio, R.-S. Huang, J. Majer, S. M. Girvin and R. J. Schoelkopf         Physical Review Letters Vol 94, 090501 (2005) / cond-mat/0407325 (pdf)
  22. Circuit quantum electrodynamics: Coherent coupling of a single photon to a Cooper pair box
    A. Wallraff, D. I. Schuster, A. Blais, L. Frunzio, R.-S. Huang, J. Majer, S. Kumar, S. M. Girvin and R. J. Schoelkopf         Nature (London) 431 162 (2004) / cond-mat-0407325 (pdf)
  23. Measurement of the excited-state lifetime of a microelectronic circuit
    K. W. Lehnert, K. Bladh, L. F. Spietz, D. Gunnarsson, D. I. Schuster, P. Delsing, and R. J. Schoelkopf         Physical Review Letters 90(2):027002, Jan 2003 (pdf)