Multi-photon quantum interference in a multi-port integrated photonic device
| Autor: | Pete Smith, Nathan K. Langford, Ian A. Walmsley, Benjamin J. Metcalf, Justin B. Spring, James C. Gates, W. Steven Kolthammer, Brian J. Smith, Xian-Min Jin, Nicholas Thomas-Peter, Dmytro Kundys, Marco Barbieri, Peter C. Humphreys, Matthew A. Broome |
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| Přispěvatelé: | Metcalf, Bj, Thomas Peter, N, Spring, Jb, Kundys, D, Broome, Ma, Humphreys, Pc, Jin, Xm, Barbieri, Marco, Kolthammer, W, Gates, Jc, Smith, Bj, Langford, Nk, Smith, Pgr, Walmsley, Ia |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Computer science
FOS: Physical sciences General Physics and Astronomy Quantum imaging 01 natural sciences General Biochemistry Genetics and Molecular Biology 010309 optics Open quantum system Quantum error correction Quantum mechanics 0103 physical sciences Quantum operation Electronic engineering Quantum information 010306 general physics Quantum Physics Quantum network Research Groups and Centres\Physics\Low Temperature Physics Multidisciplinary Faculty of Science\Physics Quantum sensor General Chemistry 3. Good health Quantum technology Quantum Physics (quant-ph) Optics (physics.optics) Physics - Optics |
| Zdroj: | Nature Communications Nature Communications, 4 ArXiv.org |
| Popis: | Increasing the complexity of quantum photonic devices is essential for many optical information processing applications to reach a regime beyond what can be classically simulated, and integrated photonics has emerged as a leading platform for achieving this. Here, we demonstrate three-photon quantum operation of an integrated device containing three coupled interferometers, eight spatial modes and many classical and nonclassical interferences. This represents a critical advance over previous complexities and the first on-chip nonclassical interference with more than two photonic inputs. We introduce a new scheme to verify quantum behaviour, using classically characterised device elements and hierarchies of photon correlation functions. We accurately predict the device's quantum behaviour and show operation inconsistent with both classical and bi-separable quantum models. Such methods for verifying multiphoton quantum behaviour are vital for achieving increased circuit complexity. Our experiment paves the way for the next generation of integrated photonic quantum simulation and computing devices. 7 pages, 4 figures |
| Databáze: | OpenAIRE |
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