On the stability of quantum holonomic gates

Abstract

We provide a unified geometrical description for analyzing the stability of holonomic quantum gates in the presence of imprecise driving controls (parametric noise). We consider the situation in which these fluctuations do not affect the adiabatic evolution but can reduce the logical gate performance. Using the intrinsic geometric properties of the holonomic gates, we show under which conditions on noise's correlation time and strength, the fluctuations in the driving field cancel out. In this way, we provide theoretical support to previous numerical simulations. We also briefly comment on the error due to the mismatch between real and nominal time of the period of the driving fields and show that it can be reduced by suitably increasing the adiabatic time.

7 pages

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• Geometric quantum gates via dark paths in Rydberg atoms
• State-independent Nonadiabatic Geometric Quantum Gates
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• Realization of universal nonadiabatic geometric control on decoherence-free qubits in the XY model
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• Exact analysis of gate noise effects on non-adiabatic transformations of spin-orbit qubits
• Open system geometric phase based on system-reservoir joint state evolution
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• Stellar Representation of Grassmannians
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• Robustness Enhancement of Universal Noncyclic Geometric Gates via Evolution Optimization
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