Charge qubit in van der Waals heterostructures
| Autor: | Bruno Lucatto, Lara K. Teles, Marcelo Marques, Friedhelm Bechstedt, Daniel S. Koda |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Field (physics) FOS: Physical sciences Charge (physics) 02 engineering and technology Electronic structure 021001 nanoscience & nanotechnology 01 natural sciences Computer Science::Emerging Technologies Quantum state Qubit Electric field Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Quantum information Electric current Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 100 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.100.121406 |
| Popis: | The use of spatial quantum superpositions of electron states in a gated vdW heterostructure as a charge qubit is presented. We theoretically demonstrate the concept for the ZrSe$_2$/SnSe$_2$ vdW heterostructure using rigorous ab initio calculations. In the proposed scheme, the quantum state is prepared by applying a vertical electric field, is manipulated by short field pulses, and is measured via electric currents. The qubit is robust, operational at high temperature, and compatible with the current 2D technology. The results open up new avenues for the field of physical implementation of qubits. Comment: Main: 6 pages, 5 figures Supporting Information: 5 pages, 3 figures, 2 tables |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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