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Harnessing temporal modes for multi-photon quantum information processing based on integrated optics.

G Harder1, V Ansari2, T J Bartley2

  • 1Integrated Quantum Optics Group, Applied Physics, University of Paderborn, 33098 Paderborn, Germany georg.harder@uni-paderborn.de.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|June 28, 2017
PubMed
Summary
This summary is machine-generated.

This study explores using multi-photon and squeezed states in integrated optics for quantum information coding. Researchers analyzed the potential and limitations of these advanced quantum states for enhanced data transmission.

Keywords:
quantum pulse gatesqueezed statestemporal modes

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Area of Science:

  • Quantum optics and photonics
  • Integrated photonics for quantum information processing

Background:

  • Significant advancements in low-loss waveguides, efficient photon-number detectors, and nonlinear processes.
  • Engineered sum-frequency conversion now enables arbitrary temporal broadband modes, making spectral degrees of freedom accessible for information coding.
  • Information is frequently encoded into the temporal modes of single photons.

Purpose of the Study:

  • To analyze the prospects of using multi-photon states or squeezed states in different temporal modes.
  • To investigate the feasibility of these approaches using integrated optics devices.
  • To understand the limitations of current technology for quantum information encoding.

Main Methods:

  • Analysis of multi-photon and squeezed states within integrated optics frameworks.
  • Description of an analogy between mode-selective sum-frequency conversion and spatial beam splitter networks.
  • Evaluation of achievable squeezing limits in waveguides and loss limits in the conversion process.

Main Results:

  • The study provides an analysis of the potential of multi-photon and squeezed states for quantum information.
  • An analogy is drawn between sum-frequency conversion and beam splitter networks, offering new perspectives.
  • Limits on squeezing and conversion loss in current waveguide technology are identified.

Conclusions:

  • Integrated optics offers promising avenues for advanced quantum information coding using multi-photon and squeezed states.
  • Understanding technological limitations is crucial for future development in this field.
  • Further research can leverage these findings for enhanced quantum communication and computation.