Recovering the full dimensionality of hyperentanglement in collinear photon pairs
| Autor: | Eric Y. Zhu, Changjia Chen, Arash Riazi, Li Qian |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics Photon Hilbert space FOS: Physical sciences Quantum entanglement Interference (wave propagation) 01 natural sciences 010305 fluids & plasmas symbols.namesake Postselection Quantum mechanics 0103 physical sciences symbols 010306 general physics Quantum Physics (quant-ph) Realization (systems) Quantum Curse of dimensionality |
| Popis: | Exploiting hyperentanglement of photon pairs, that is, simultaneous entanglement in multiple degrees of freedom(DOFs), increases the dimensionality of Hilbert spaces for quantum information processing. However, generation of hyperentangled photon pairs collinearlly, while produces high brightness, results in a smaller Hilbert space due to the two photons being in the same spatial mode. In this letter, we point out that one can recover the full dimensionality of such hyperentanglement through a simple interference set up, similar to the time-reversed Hong-Ou-Mandel (TR-HOM) process. Different from the standard TR-HOM, we point out a critical phase condition has to be satisfied in order to recover the hyperentanglement. We theoretically analyze the realization of this approach and discuss the feasibility of generating truly hyperentangled photon pairs. Our proposed approach does not require post-selection and hence enables efficient hyper-entangled photon pairs generation for high-dimensional quantum applications. 5 pages, 2 figures, During the preparation of this manuscript, we noticed a similar work posted recently on arXiv:1910.07684. This work is developed independently |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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