Quantum discord of thermal two-photon orbital angular momentum state: mimicking teleportation to transmit an image

Lixiang Chen

doi:10.1038/s41377-021-00585-8

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Quantum discord of thermal two-photon orbital angular momentum state: mimicking teleportation to transmit an image

Letter

- Quantum discord of thermal two-photon orbital angular momentum state: mimicking teleportation to transmit an image
- Light: Science & Applications Vol. 10, Issue 8, Pages: 1401-1408(2021)
- Affiliations：
  
  Department of Physics and Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Xiamen University, Xiamen 361005, China
- Author bio：
  
  Lixiang Chen (chenlx@xmu.edu.cn)
- Funds：
- DOI：10.1038/s41377-021-00585-8
  CLC：
- Published：31 August 2021，
  
  Published Online：20 July 2021，
  
  Received：21 January 2021，
  
  Revised：20 June 2021，
  
  Accepted：28 June 2021
- Accepted：
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Chen, L. X. Quantum discord of thermal two-photon orbital angular momentum state: mimicking teleportation to transmit an image. Light: Science & Applications, 10, 1401-1408 (2021).
DOI：

Chen, L. X. Quantum discord of thermal two-photon orbital angular momentum state: mimicking teleportation to transmit an image. Light: Science & Applications, 10, 1401-1408 (2021). DOI： 10.1038/s41377-021-00585-8.

摘要

Abstract

We formulate a density matrix to fully describe two-photon state within a thermal light source in the photon orbital angular momentum (OAM) Hilbert space. We prove the separability

i.e.

zero entanglement of the thermal two-photon state. Still

we reveal the hidden quantum correlations in terms of geometric measures of discord. By mimicking the original protocol of quantum teleportation

we demonstrate that the non-zero quantum discord can be utilized to transmit a high-dimensional OAM state at the single-photon level. It is found that albeit the low fidelity of teleportation due to the inherent component of maximally mixed state

the information of all parameters that characterize the original state can still be extracted from the teleported one. Besides

we demonstrate that the multiple repetitions of the protocol

enable the transmission of a complex-amplitude light field

e.g.

an optical image

regardless of being accompanied with a featureless background. We also distinguish our scheme of optical image transmission from that of ghost imaging.

关键词

Keywords

references

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