Quantum enhanced beam tracking surpassing the Heisenberg uncertainty limit
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908461600604160 |
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| author | Zhang, Yingwen England, Duncan Lupu-Gladstein, Noah Bouchard, Frederic Thekkadath, Guillaume Bustard, Philip J. Karimi, Ebrahim Sussman, Benjamin |
| author_facet | Zhang, Yingwen England, Duncan Lupu-Gladstein, Noah Bouchard, Frederic Thekkadath, Guillaume Bustard, Philip J. Karimi, Ebrahim Sussman, Benjamin |
| contents | Determining a beam's full trajectory requires tracking both its position and momentum (angular) information. However, the product of position and momentum uncertainty in a simultaneous measurement of the two parameters is bound by the Heisenberg uncertainty limit (HUL). In this work, we present a proof-of-principle demonstration of a quantum-enhanced beam tracking technique, leveraging the inherent position and momentum entanglement between photons produced via spontaneous parametric down-conversion (SPDC). We show that quantum entanglement can be exploited to achieve a beam tracking accuracy beyond the HUL in a simultaneous measurement. Moreover, with existing detection technologies, it is already possible to achieve near real-time beam tracking capabilities at the single-photon level. The technique also exhibits high resilience to background influences, with negligible reduction in tracking accuracy even when subjected to a disruptive beam that is significantly brighter than SPDC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14104 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum enhanced beam tracking surpassing the Heisenberg uncertainty limit Zhang, Yingwen England, Duncan Lupu-Gladstein, Noah Bouchard, Frederic Thekkadath, Guillaume Bustard, Philip J. Karimi, Ebrahim Sussman, Benjamin Quantum Physics Optics Determining a beam's full trajectory requires tracking both its position and momentum (angular) information. However, the product of position and momentum uncertainty in a simultaneous measurement of the two parameters is bound by the Heisenberg uncertainty limit (HUL). In this work, we present a proof-of-principle demonstration of a quantum-enhanced beam tracking technique, leveraging the inherent position and momentum entanglement between photons produced via spontaneous parametric down-conversion (SPDC). We show that quantum entanglement can be exploited to achieve a beam tracking accuracy beyond the HUL in a simultaneous measurement. Moreover, with existing detection technologies, it is already possible to achieve near real-time beam tracking capabilities at the single-photon level. The technique also exhibits high resilience to background influences, with negligible reduction in tracking accuracy even when subjected to a disruptive beam that is significantly brighter than SPDC. |
| title | Quantum enhanced beam tracking surpassing the Heisenberg uncertainty limit |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2501.14104 |