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Related Experiment Videos

Measurement-Based Linear Optics.

Rafael N Alexander1,2, Natasha C Gabay1, Peter P Rohde3

  • 1School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia.

Physical Review Letters
|April 4, 2017
PubMed
Summary
This summary is machine-generated.

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Researchers developed virtual interferometers for optical quantum computing, programmed by measurement angles. This approach offers efficiency in time and energy for tasks like BosonSampling.

Area of Science:

  • Quantum optics
  • Quantum computing
  • Information science

Background:

  • Implementing large, stable interferometers is a key challenge in optical quantum processing.
  • Existing physical interferometers face limitations in scalability and stability.

Purpose of the Study:

  • To introduce a novel approach using virtual, measurement-based interferometers.
  • To demonstrate an efficient method for programming quantum interferometers on the fly.

Main Methods:

  • Utilizing homodyne measurement angles for dynamic interferometer programming.
  • Modeling the effects of finite squeezing as uniform amplitude damping.
  • Comparing the performance of virtual interferometers with existing physical ones.

Main Results:

Related Experiment Videos

  • The proposed virtual interferometers are programmed solely by selecting homodyne measurement angles.
  • Finite squeezing effects are accurately represented by uniform amplitude damping.
  • The approach demonstrates efficiency in terms of time and squeezing (energy) for BosonSampling.

Conclusions:

  • Virtual, measurement-based interferometers offer a promising alternative to physical interferometers in optical quantum processing.
  • This method provides an efficient and programmable solution for quantum computational tasks like BosonSampling.
  • The approach has the potential to advance the demonstration of postclassical computational power.