591 citations · 1.9k across the 8 of their papers we have counts for
8 papers
Entanglement of two superconducting qubits in a waveguide cavity via monochromatic two-photon excitation
S. Poletto, Jay M. Gambetta, Seth T. Merkel +9
We report a system where fixed interactions between non-computational levels make bright the otherwise forbidden two-photon 00 --> 11 transition. The system is formed by hand selec…
Superconducting qubit in waveguide cavity with coherence time approaching 0.1ms
Chad Rigetti, Stefano Poletto, Jay M. Gambetta +10
We report a superconducting artificial atom with an observed quantum coherence time of T2*=95us and energy relaxation time T1=70us. The system consists of a single Josephson juncti…
Complete universal quantum gate set approaching fault-tolerant thresholds with superconducting qubits
Jerry M. Chow, Jay M. Gambetta, A. D. Corcoles +9
We use quantum process tomography to characterize a full universal set of all-microwave gates on two superconducting single-frequency single-junction transmon qubits. All extracted…
Protecting superconducting qubits from external sources of loss and heat
Antonio D. Córcoles, Jerry M. Chow, Jay M. Gambetta +6
We characterize a superconducting qubit before and after embedding it along with its package in an absorptive medium. We observe a drastic improvement in the effective qubit temper…
A simple all-microwave entangling gate for fixed-frequency superconducting qubits
Jerry M. Chow, A. D. Corcoles, Jay M. Gambetta +8
We demonstrate an all-microwave two-qubit gate on superconducting qubits which are fixed in frequency at optimal bias points. The gate requires no additional subcircuitry and is tu…
High coherence hybrid superconducting qubit
Matthias Steffen, Shwetank Kumar, David P. DiVincenzo +4
We measure the coherence of a new superconducting qubit, the {\em low-impedance flux qubit}, finding s. It is a three-junction flux qubit, but the ratio o…
Readout for Phase Qubits without Josephson Junctions
Matthias Steffen, Shwetank Kumar, David DiVincenzo +4
We present a novel readout scheme for phase qubits which eliminates the read-out SQUID so that the entire qubit and measurement circuitry only requires a single Josephson junction.…
Low-bandwidth control scheme for an oscillator stabilized Josephson qubit
R. H. Koch, J. R. Rozen, G. A. Keefe +4
We introduce a new Josephson junction circuit for which quantum operations are realized by low-bandwidth, nearly adiabatic magnetic-flux pulses. Coupling to the fundamental mode of…