Measurement of pure states of light in the orbital-angular-momentum basis using nine multipixel image acquisitions
Autor: | Anand K. Jha, Girish Kulkarni, Suman Karan |
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Rok vydání: | 2020 |
Předmět: |
Physics
Angular momentum Quantum Physics Basis (linear algebra) Phase (waves) General Physics and Astronomy FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Interference (wave propagation) 01 natural sciences Measure (mathematics) Computational physics Postselection Reference beam 0103 physical sciences 010306 general physics 0210 nano-technology Quantum Physics (quant-ph) Curse of dimensionality Physics - Optics Optics (physics.optics) |
DOI: | 10.48550/arxiv.2005.03849 |
Popis: | The existing techniques for measuring high-dimensional pure states of light in the orbital angular momentum (OAM) basis either involve a large number of single-pixel data acquisitions and substantial postselection errors that increase with dimensionality, or involve substantial loss, or require interference with a reference beam of known phase. Here, we propose an interferometric technique that can measure an unknown pure state using only nine multipixel image acquisitions without involving postselection, loss, or a separate reference beam. The technique essentially measures two complex correlation functions of the input field and then employs a recursive postprocessing algorithm to infer the state. We experimentally demonstrate the technique for pure states up to dimensionality of 25, reporting a mean fidelity greater than 90 % up to 11 dimensions. Our technique can significantly improve the performance of OAM-based information processing applications. Comment: 6 pages, 3 figures |
Databáze: | OpenAIRE |
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