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Updated: Aug 12, 2026
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
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
Summary
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:
- 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.
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