The role of coherence on two-particle quantum walks

• Autorzy: Li-Hua Lu , Shan Zhu , You-Quan Li
• Języki publikacji: EN

Abstrakty

EN

We investigate the dynamical properties of the two-boson quantum walk in systems with different degrees of coherence, and where the effect of the coherence on the two-boson quantum walk can be naturally introduced. A general analytical expression for the two-boson correlation function, for both pure states and mixed states, is given.We propose a possible two-photon quantum-walk scheme with a mixed initial state, and find that the twophoton correlation function and the average distance between two photons can be influenced by the initial photon distribution, the relative phase, or the degree of coherence. The propagation features of our numerical results can be explained by our analytical two-photon correlation function.

Słowa kluczowe

EN

wo-particle quantum walk; degree of coherence; two-photon correlation function; pure state; mixedstate

• Czasopismo: Open Physics
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

otrzymano

2015-02-06

zaakceptowano

2015-10-13

online

2015-11-25

Twórcy

autor

Li-Hua Lu

• Zhejiang Institute of Modern Physics and Department of
  Physics, Zhejiang University, Hangzhou 310027, P. R. China

autor

Shan Zhu

• Zhejiang Institute of Modern Physics and Department of
  Physics, Zhejiang University, Hangzhou 310027, P. R. China
• Collaborative Innovation Center of Advanced Microstructures,
  Nanjing, P. R. China

autor

You-Quan Li

• Zhejiang Institute of Modern Physics and Department of
  Physics, Zhejiang University, Hangzhou 310027, P. R. China
• Collaborative Innovation Center of Advanced Microstructures,
  Nanjing, P. R. China

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Identyfikatory

DOI

10.1515/phys-2015-0042