Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities
We show that relatively simple integrated photonic circuits have the potential to realize a high fidelity deterministic controlled-phase gate between photonic qubits using bulk optical nonlinearities. The gate is enabled by converting travelling continuous-mode photons into stationary cavity modes u...
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| Format: | Article |
| Language: | English |
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American Physical Society (APS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/129612 |
| _version_ | 1826193165586006016 |
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| author | Heuck, Mikkel Englund, Dirk R. |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Heuck, Mikkel Englund, Dirk R. |
| author_sort | Heuck, Mikkel |
| collection | MIT |
| description | We show that relatively simple integrated photonic circuits have the potential to realize a high fidelity deterministic controlled-phase gate between photonic qubits using bulk optical nonlinearities. The gate is enabled by converting travelling continuous-mode photons into stationary cavity modes using strong classical control fields that dynamically change the effective cavity-waveguide coupling rate. This architecture succeeds because it reduces the wave packet distortions that otherwise accompany the action of optical nonlinearities [J. Shapiro, Phys. Rev. A 73, 062305 (2006)PLRAAN1050-294710.1103/PhysRevA.73.062305; J. Gea-Banacloche, Phys. Rev. A 81, 043823 (2010)PLRAAN1050-294710.1103/PhysRevA.81.043823]. We show that high-fidelity gates can be achieved with self-phase modulation in χ(3) materials as well as second-harmonic generation in χ(2) materials. The gate fidelity asymptotically approaches unity with increasing storage time for an incident photon wave packet with fixed duration. We also show that dynamically coupled cavities enable a trade-off between errors due to loss and wave packet distortion. Our proposed architecture represents a new approach to practical implementation of quantum gates that is roomerature compatible and only relies on components that have been individually demonstrated. |
| first_indexed | 2024-09-23T09:34:45Z |
| format | Article |
| id | mit-1721.1/129612 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:34:45Z |
| publishDate | 2021 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1296122022-09-26T12:25:21Z Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities Heuck, Mikkel Englund, Dirk R. Massachusetts Institute of Technology. Research Laboratory of Electronics Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science We show that relatively simple integrated photonic circuits have the potential to realize a high fidelity deterministic controlled-phase gate between photonic qubits using bulk optical nonlinearities. The gate is enabled by converting travelling continuous-mode photons into stationary cavity modes using strong classical control fields that dynamically change the effective cavity-waveguide coupling rate. This architecture succeeds because it reduces the wave packet distortions that otherwise accompany the action of optical nonlinearities [J. Shapiro, Phys. Rev. A 73, 062305 (2006)PLRAAN1050-294710.1103/PhysRevA.73.062305; J. Gea-Banacloche, Phys. Rev. A 81, 043823 (2010)PLRAAN1050-294710.1103/PhysRevA.81.043823]. We show that high-fidelity gates can be achieved with self-phase modulation in χ(3) materials as well as second-harmonic generation in χ(2) materials. The gate fidelity asymptotically approaches unity with increasing storage time for an incident photon wave packet with fixed duration. We also show that dynamically coupled cavities enable a trade-off between errors due to loss and wave packet distortion. Our proposed architecture represents a new approach to practical implementation of quantum gates that is roomerature compatible and only relies on components that have been individually demonstrated. United States. Air Force. Office of Scientific Research (Grant FA9550-16-1-0391) 2021-02-01T19:13:22Z 2021-02-01T19:13:22Z 2020-04 2019-09 2020-12-14T18:30:07Z Article http://purl.org/eprint/type/JournalArticle 2331-7019 https://hdl.handle.net/1721.1/129612 Heuc, Mikkel et al. “Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities.” Physical Review Letters, 124, 16 (April 2020): 160501 © 2020 The Author(s) en 10.1103/PHYSREVLETT.124.160501 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Heuck, Mikkel Englund, Dirk R. Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities |
| title | Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities |
| title_full | Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities |
| title_fullStr | Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities |
| title_full_unstemmed | Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities |
| title_short | Controlled-Phase Gate Using Dynamically Coupled Cavities and Optical Nonlinearities |
| title_sort | controlled phase gate using dynamically coupled cavities and optical nonlinearities |
| url | https://hdl.handle.net/1721.1/129612 |
| work_keys_str_mv | AT heuckmikkel controlledphasegateusingdynamicallycoupledcavitiesandopticalnonlinearities AT englunddirkr controlledphasegateusingdynamicallycoupledcavitiesandopticalnonlinearities |