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Observation of Berry's Phase in a Solid State Qubit
P. J. Leek, J. M. Fink, A. Blais +7
In quantum information science, the phase of a wavefunction plays an important role in encoding information. While most experiments in this field rely on dynamic effects to manipul…
Coupling Superconducting Qubits via a Cavity Bus
J. Majer, J. M. Chow, J. M. Gambetta +11
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…
Charge insensitive qubit design derived from the Cooper pair box
Jens Koch, Terri M. Yu, Jay Gambetta +7
Short dephasing times pose one of the main challenges in realizing a quantum computer. Different approaches have been devised to cure this problem for superconducting qubits, a pri…
AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
D. I. Schuster, A. Wallraff, A. Blais +5
We have spectroscopically measured the energy level separation of a superconducting charge qubit coupled non-resonantly to a single mode of the electromagnetic field of a supercond…