Pinpointing sweat spots for the Kerr-Cat Qubit
POSTER
Abstract
Introducing a detuning and a single photon drive to the Kerr-Cat Qubit alters its eigenstates to be not coherent states.
However by displacing the original coherent states the eigenstates can be approximated in such a way that only a periodic deformation is present.
If the period of the X rotation caused by the detuning is a multiple of the period of the deformation we can recover the original coherent state with high fidelity.
If however the deformation is maximal at the time we complete the X rotation the peak of our fidelity is cut off and only low fidelity rotations can be achieved.
Thus a careful choice of parameters is required.
However by displacing the original coherent states the eigenstates can be approximated in such a way that only a periodic deformation is present.
If the period of the X rotation caused by the detuning is a multiple of the period of the deformation we can recover the original coherent state with high fidelity.
If however the deformation is maximal at the time we complete the X rotation the peak of our fidelity is cut off and only low fidelity rotations can be achieved.
Thus a careful choice of parameters is required.
Publication: Puri, S., Boutin, S. and Blais, A. Engineering the quantum states of light in a Kerr-nonlinear<br>resonator by two-photon driving. npj Quantum Inf. 3, 18 (2017).<br><br>Arne, S. and Ansari, M. planned paper<br><br>Grimm, A., Frattini, N.E., Puri, S., Mundhada, S.O., Touzard, S., Mirrahimi, M., Girvin, S.M., Shankar, S. and Devoret, M.H. <br>The Kerr-Cat Qubit: Stabilization, Readout, and Gates arXiv preprint arXiv:1907.12131 (2019).
Presenters
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Arne Schlabes
Forschungszentrum Jülich GmbH
Authors
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Arne Schlabes
Forschungszentrum Jülich GmbH
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Arne Schlabes
Forschungszentrum Jülich GmbH
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Mohammad H Ansari
Forschungszentrum Jülich GmbH