Measure the heisenberg interaction in a polariton dyad
| Autor: | Kirill P. Kalinin, Pavlos G. Lagoudakis, Julian D. Töpfer, Wolfgang Werner Langbein, Pasquale Cilibrizzi, Matteo Silva, Alexis Askitopoulos, Natalia G. Berloff |
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| Rok vydání: | 2017 |
| Předmět: |
Coupling
Physics Optimization problem Exciton 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences symbols.namesake Quantum mechanics 0103 physical sciences Polariton symbols Wave vector 010306 general physics 0210 nano-technology Hamiltonian (quantum mechanics) Science technology and society Dyad |
| Zdroj: | Scopus-Elsevier |
| DOI: | 10.1109/cleoe-eqec.2017.8087623 |
| Popis: | Solving large optimization problems lies at heart of modem science and technology from social sciences to technological applications, i.e. protein design [1]. Recently, we proposed a new platform for an analog Hamiltonian simulator based on polariton graphs [2], which benefit from continuous read-out and single site control. Ability to control and engineer a wide range of strengths of coupling interactions between two sites is crucial for mapping a desired optimization problem into a polariton graph. We study the phase coupling mechanism (see also [3]) between two condensates (a dyad) at different separation distances (Fig. 1a) and measure the coupling strength, |J|, observing an oscillatory decay (Fig. 1b). We interpret the interaction as a shift of the balance among polariton and exciton populations, which leads to an increase of the emission energy as the dyad separation increases. Therefore, we defined the coupling as |J|= E(∞) − E(k c d) where k c is the condensation wavevector, d is the dyad distance and E(∞) is the saturation energy for a dyad at infinite distance. The characterisation of the coupling represents a crucial step to build up a “Look-Up-Table” to engineering interactions in a polariton graph, an essential tool to realise a polariton simulator. |
| Databáze: | OpenAIRE |
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