An elementary quantum network of entangled optical atomic clocks
Demonstration of entanglement-enhanced frequency comparison of two optical atomic clocks based on the 674nm quadrupole transition of 88Sr+ ions, which are linked by a quantum-optical fibre link (≈2 m long). We show that the use of an entangled state reduces the measurement uncertainty by nearly √2 ,...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2022
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| _version_ | 1826312884310769664 |
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| author | Nichol, B |
| author2 | Lucas, DM |
| author_facet | Lucas, DM Nichol, B |
| author_sort | Nichol, B |
| collection | OXFORD |
| description | Demonstration of entanglement-enhanced frequency comparison of two optical atomic clocks based on the 674nm quadrupole transition of 88Sr+ ions, which are linked by a quantum-optical fibre link (≈2
m long). We show that the use of an entangled state reduces the measurement uncertainty by nearly √2
, the value expected for the Heisenberg Limit. Today's optical clocks are typically limited by dephasing of the probe laser; in this regime, we find that entanglement yields a factor 2 reduction in the measurement uncertainty compared to conventional correlation spectroscopy techniques. We demonstrate this enhancement for the measurement of a frequency shift applied to one of the clocks. |
| first_indexed | 2024-09-25T04:02:08Z |
| format | Thesis |
| id | oxford-uuid:a7c3db29-bd5b-4991-bceb-7fce6ea73b84 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:02:08Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | oxford-uuid:a7c3db29-bd5b-4991-bceb-7fce6ea73b842024-05-07T10:09:28ZAn elementary quantum network of entangled optical atomic clocksThesishttp://purl.org/coar/resource_type/c_db06uuid:a7c3db29-bd5b-4991-bceb-7fce6ea73b84PhysicsQuantum entanglementAtomic clocksIon trapsTrapped ionsEnglishHyrax Deposit2022Nichol, BLucas, DMDemonstration of entanglement-enhanced frequency comparison of two optical atomic clocks based on the 674nm quadrupole transition of 88Sr+ ions, which are linked by a quantum-optical fibre link (≈2 m long). We show that the use of an entangled state reduces the measurement uncertainty by nearly √2 , the value expected for the Heisenberg Limit. Today's optical clocks are typically limited by dephasing of the probe laser; in this regime, we find that entanglement yields a factor 2 reduction in the measurement uncertainty compared to conventional correlation spectroscopy techniques. We demonstrate this enhancement for the measurement of a frequency shift applied to one of the clocks. |
| spellingShingle | Physics Quantum entanglement Atomic clocks Ion traps Trapped ions Nichol, B An elementary quantum network of entangled optical atomic clocks |
| title | An elementary quantum network of entangled optical atomic clocks |
| title_full | An elementary quantum network of entangled optical atomic clocks |
| title_fullStr | An elementary quantum network of entangled optical atomic clocks |
| title_full_unstemmed | An elementary quantum network of entangled optical atomic clocks |
| title_short | An elementary quantum network of entangled optical atomic clocks |
| title_sort | elementary quantum network of entangled optical atomic clocks |
| topic | Physics Quantum entanglement Atomic clocks Ion traps Trapped ions |
| work_keys_str_mv | AT nicholb anelementaryquantumnetworkofentangledopticalatomicclocks AT nicholb elementaryquantumnetworkofentangledopticalatomicclocks |