Simultaneous State Measurement of Coupled Josephson Phase Qubits

@article{McDermott2005SimultaneousSM,
  title={Simultaneous State Measurement of Coupled Josephson Phase Qubits},
  author={R. McDermott and Raymond W. Simmonds and Matthias Steffen and Ken Cooper and Katarina Cicak and Kevin D. Osborn and Seongshik Oh and David P. Pappas and John M. Martinis},
  journal={Science},
  year={2005},
  volume={307},
  pages={1299 - 1302}
}
One of the many challenges of building a scalable quantum computer is single-shot measurement of all the quantum bits (qubits). We have used simultaneous single-shot measurement of coupled Josephson phase qubits to directly probe interaction of the qubits in the time domain. The concept of measurement crosstalk is introduced, and we show that its effects are minimized by careful adjustment of the timing of the measurements. We observe the antiphase oscillation of the two-qubit |01〉 and |10… 
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