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Instituto de Ciencia de Materiales de Madrid |
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| Condensed Matter Theory | |||||
| Sigmund Kohler | home | cv | research | publications | ||||
Spin entangled state transfer in quantum dot arrays: Coherent adiabatic and speed-up protocolsYue Ban, Xi Chen, Sigmund Kohler, and Gloria PlateroAdv. Quantum Technol. 2019, 00048 (2019) Long-distance transfer of quantum states is an indispensable part of large-scale quantum information processing. We propose a novel scheme for the transfer of two-electron entangled states, from one edge of a quantum dot array to the other by coherent adiabatic passage. This protocol is mediated by pulsed tunneling barriers. In a second step, we seek for a speed up by shortcut to adiabaticity techniques. This significantly reduces the operation time and, thus, minimizes the impact of decoherence. For typical parameters of state-of-the-art solid state devices, the accelerated protocol has an operation time in the nanosecond range and terminates before a major coherence loss sets in. The scheme represents a promising candidate for entanglement transfer in solid state quantum information processing. arXiv:1904.05694 [cond-mat] |
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last modified: 18.11.2024 by
Sigmund Kohler