Higher-order interference between multiple quantum particles interacting nonlinearly
The double-slit experiment is the most direct demonstration of interference between individual quantum objects. Since similar experiments with single particles and more slits produce interference fringes reducible to a combination of double-slit patterns, it is usually argued that quantum interferen...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/151089 |
| _version_ | 1811691706215563264 |
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| author | Rozema, Lee A. Zhuo, Zhao Paterek, Tomasz Dakić, Borivoje |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Rozema, Lee A. Zhuo, Zhao Paterek, Tomasz Dakić, Borivoje |
| author_sort | Rozema, Lee A. |
| collection | NTU |
| description | The double-slit experiment is the most direct demonstration of interference between individual quantum objects. Since similar experiments with single particles and more slits produce interference fringes reducible to a combination of double-slit patterns, it is usually argued that quantum interference occurs between pairs of trajectories, compactly denoted as second-order interference. Here we show that quantum mechanics in fact allows for interference of arbitrarily high order. This occurs naturally when one considers multiple quantum objects interacting in the presence of a nonlinearity, both of which are required to observe higher-order interference. We make this clear by treating a generalized multislit interferometer using second quantization. We then present explicit experimentally relevant examples both with photons interacting in nonlinear media and an interfering Bose-Einstein condensate with particle-particle interactions. These examples are all perfectly described by quantum theory, and yet exhibit higher-order interference based on multiple particles interacting nonlinearly. |
| first_indexed | 2024-10-01T06:24:09Z |
| format | Journal Article |
| id | ntu-10356/151089 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:24:09Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1510892023-02-28T19:51:46Z Higher-order interference between multiple quantum particles interacting nonlinearly Rozema, Lee A. Zhuo, Zhao Paterek, Tomasz Dakić, Borivoje School of Physical and Mathematical Sciences MajuLab @ NTU Science::Physics Optical Quantum Information Processing Optical Tests of Quantum Theory The double-slit experiment is the most direct demonstration of interference between individual quantum objects. Since similar experiments with single particles and more slits produce interference fringes reducible to a combination of double-slit patterns, it is usually argued that quantum interference occurs between pairs of trajectories, compactly denoted as second-order interference. Here we show that quantum mechanics in fact allows for interference of arbitrarily high order. This occurs naturally when one considers multiple quantum objects interacting in the presence of a nonlinearity, both of which are required to observe higher-order interference. We make this clear by treating a generalized multislit interferometer using second quantization. We then present explicit experimentally relevant examples both with photons interacting in nonlinear media and an interfering Bose-Einstein condensate with particle-particle interactions. These examples are all perfectly described by quantum theory, and yet exhibit higher-order interference based on multiple particles interacting nonlinearly. Published version We thank M. Radonjić and Č. Brukner for useful discussions. L.A.R. acknowledges support from the Templeton World Charity Foundation (fellowship No. TWCF0194) and the Austrian Science Fund (FWF) through BeyondC (BeyondC-F7113). T.P. is supported by the Polish National Agency for Academic Exchange NAWA Project No. PPN/PPO/2018/1/00007/U/00001. B.D. acknowledges support from an ESQ Discovery Grant of the Austrian Academy of Sciences (OAW) and the Austrian Science Fund (FWF) through BeyondC (BeyondC-F7112). 2021-06-28T08:04:25Z 2021-06-28T08:04:25Z 2021 Journal Article Rozema, L. A., Zhuo, Z., Paterek, T. & Dakić, B. (2021). Higher-order interference between multiple quantum particles interacting nonlinearly. Physical Review A, 103(5), 052204-. https://dx.doi.org/10.1103/PhysRevA.103.052204 2469-9926 https://hdl.handle.net/10356/151089 10.1103/PhysRevA.103.052204 2-s2.0-85105614597 5 103 052204 en Physical Review A © 2021 American Physical Society (APS). All rights reserved. This paper was published in Physical Review A and is made available with permission of American Physical Society (APS). application/pdf |
| spellingShingle | Science::Physics Optical Quantum Information Processing Optical Tests of Quantum Theory Rozema, Lee A. Zhuo, Zhao Paterek, Tomasz Dakić, Borivoje Higher-order interference between multiple quantum particles interacting nonlinearly |
| title | Higher-order interference between multiple quantum particles interacting nonlinearly |
| title_full | Higher-order interference between multiple quantum particles interacting nonlinearly |
| title_fullStr | Higher-order interference between multiple quantum particles interacting nonlinearly |
| title_full_unstemmed | Higher-order interference between multiple quantum particles interacting nonlinearly |
| title_short | Higher-order interference between multiple quantum particles interacting nonlinearly |
| title_sort | higher order interference between multiple quantum particles interacting nonlinearly |
| topic | Science::Physics Optical Quantum Information Processing Optical Tests of Quantum Theory |
| url | https://hdl.handle.net/10356/151089 |
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