M. Meretska

Entanglement genesis by ancilla-based parity measurement in 2D circuit QED

  1. O.-P. Saira,
  2. J. P. Groen,
  3. J. Cramer,
  4. M. Meretska,
  5. G. de Lange,
  6. and L. DiCarlo
We present an indirect two-qubit parity meter in planar circuit quantum electrodynamics, realized by discrete interaction with an ancilla and a subsequent projective ancilla measurement
with a dedicated, dispersively coupled resonator. Quantum process tomography and successful entanglement by measurement demonstrate that the meter is intrinsically quantum non-demolition. Separate interaction and measurement steps allow commencing subsequent data qubit operations in parallel with ancilla measurement, offering time savings over continuous schemes.
arxiv pdf