Entanglement and teleportation between polarization and wave-like encodings of an optical qubit
| Autor: | A. I. Lvovsky, Demid V. Sychev, Alexander E. Ulanov, Anastasia A. Pushkina, Valery Novikov, A. Kuzhamuratov, Egor S. Tiunov |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Science
Computer Science::Neural and Evolutionary Computation FOS: Physical sciences General Physics and Astronomy 02 engineering and technology Quantum entanglement Data_CODINGANDINFORMATIONTHEORY 01 natural sciences Teleportation Article General Biochemistry Genetics and Molecular Biology Superposition principle Computer Science::Emerging Technologies Quantum mechanics 0103 physical sciences Quantum information Hardware_ARITHMETICANDLOGICSTRUCTURES 010306 general physics lcsh:Science Quantum Physics Quantum Physics Multidisciplinary General Chemistry 021001 nanoscience & nanotechnology Polarization (waves) Physics::Classical Physics Computer Science::Other Qubit Coherent states lcsh:Q Quantum Physics (quant-ph) 0210 nano-technology |
| Zdroj: | Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Light is an irreplaceable means of communication among various quantum information processing and storage devices. Due to their different physical nature, some of these devices couple more strongly to discrete, and some to continuous degrees of freedom of a quantum optical wave. It is therefore desirable to develop a technological capability to interconvert quantum information encoded in these degrees of freedom. Here we generate and characterize an entangled state between a dual-rail (polarization-encoded) single-photon qubit and a qubit encoded as a superposition of opposite-amplitude coherent states. We furthermore demonstrate the application of this state as a resource for the interfacing of quantum information between these encodings. In particular, we show teleportation of a polarization qubit onto a freely propagating continuous-variable qubit. Interfacing quantum information between discrete and continuous would allow exploiting the best of both worlds, but it has been shown only for single-rail encoding. Here, the authors extend this to the more practical dual-rail encoding, realizing teleportation between a polarization qubit and a CV qubit. |
| Databáze: | OpenAIRE |
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