Towards the speed limit of high fidelity 2-qubit gates
- URL: http://arxiv.org/abs/2205.02324v1
- Date: Wed, 4 May 2022 20:57:56 GMT
- Title: Towards the speed limit of high fidelity 2-qubit gates
- Authors: Swathi S Hegde, Jingfu Zhang, Dieter Suter
- Abstract summary: Any error in the control fields reduces the fidelity of the implemented control operation with respect to the ideal target operation.
We present a novel approach to overcome this challenge by eliminating, for specific gate operations, the time-dependent control fields entirely.
This approach appears useful for maximising the speed of the gate operation while simultaneously eliminating relevant sources of errors.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Most implementations of quantum gate operations rely on external control
fields to drive the evolution of the quantum system. Generating these control
fields requires significant efforts to design the suitable control
Hamiltonians. Furthermore, any error in the control fields reduces the fidelity
of the implemented control operation with respect to the ideal target
operation. Achieving sufficiently fast gate operations at low error rates
remains therefore a huge challenge. In this work, we present a novel approach
to overcome this challenge by eliminating, for specific gate operations, the
time-dependent control fields entirely. This approach appears useful for
maximising the speed of the gate operation while simultaneously eliminating
relevant sources of errors. We present an experimental demonstration of the
concept in a single nitrogen-vacancy (NV) center in diamond at room
temperature.
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