Universal quantum computation in waveguide QED using decoherence free subspaces
The interaction of quantum emitters with one-dimensional photon-like reservoirs induces strong and long-range dissipative couplings that give rise to the emergence of the so-called decoherence free subspaces (DFSs) which are decoupled from dissipation. When introducing weak perturbations on the emit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/4/043041 |
| _version_ | 1797750960445980672 |
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| author | V Paulisch H J Kimble A González-Tudela |
| author_facet | V Paulisch H J Kimble A González-Tudela |
| author_sort | V Paulisch |
| collection | DOAJ |
| description | The interaction of quantum emitters with one-dimensional photon-like reservoirs induces strong and long-range dissipative couplings that give rise to the emergence of the so-called decoherence free subspaces (DFSs) which are decoupled from dissipation. When introducing weak perturbations on the emitters, e.g., driving, the strong collective dissipation enforces an effective coherent evolution within the DFS. In this work, we show explicitly how by introducing single-site resolved drivings, we can use the effective dynamics within the DFS to design a universal set of one and two-qubit gates within the DFS of an ensemble of two-level atom-like systems. Using Liouvillian perturbation theory we calculate the scaling with the relevant figures of merit of the systems, such as the Purcell factor and imperfect control of the drivings. Finally, we compare our results with previous proposals using atomic Λ systems in leaky cavities. |
| first_indexed | 2024-03-12T16:40:23Z |
| format | Article |
| id | doaj.art-4dba47534afe41b7adc5ebd33db5e2a0 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:40:23Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-4dba47534afe41b7adc5ebd33db5e2a02023-08-08T14:31:47ZengIOP PublishingNew Journal of Physics1367-26302016-01-0118404304110.1088/1367-2630/18/4/043041Universal quantum computation in waveguide QED using decoherence free subspacesV Paulisch0H J Kimble1A González-Tudela2Max-Planck-Institute of Quantum Optics , Hans-Kopfermann-Strasse 1, D-85748 Garching, GermanyNorman Bridge Laboratory of Physics 12-33, California Institute of Technology , Pasadena, CA 91125, USA; Institute for Quantum Information and Matter, California Institute of Technology , Pasadena, CA 91125, USAMax-Planck-Institute of Quantum Optics , Hans-Kopfermann-Strasse 1, D-85748 Garching, GermanyThe interaction of quantum emitters with one-dimensional photon-like reservoirs induces strong and long-range dissipative couplings that give rise to the emergence of the so-called decoherence free subspaces (DFSs) which are decoupled from dissipation. When introducing weak perturbations on the emitters, e.g., driving, the strong collective dissipation enforces an effective coherent evolution within the DFS. In this work, we show explicitly how by introducing single-site resolved drivings, we can use the effective dynamics within the DFS to design a universal set of one and two-qubit gates within the DFS of an ensemble of two-level atom-like systems. Using Liouvillian perturbation theory we calculate the scaling with the relevant figures of merit of the systems, such as the Purcell factor and imperfect control of the drivings. Finally, we compare our results with previous proposals using atomic Λ systems in leaky cavities.https://doi.org/10.1088/1367-2630/18/4/043041quantum computationwaveguide QEDdissipative assisted gatesatom nanophotonics |
| spellingShingle | V Paulisch H J Kimble A González-Tudela Universal quantum computation in waveguide QED using decoherence free subspaces New Journal of Physics quantum computation waveguide QED dissipative assisted gates atom nanophotonics |
| title | Universal quantum computation in waveguide QED using decoherence free subspaces |
| title_full | Universal quantum computation in waveguide QED using decoherence free subspaces |
| title_fullStr | Universal quantum computation in waveguide QED using decoherence free subspaces |
| title_full_unstemmed | Universal quantum computation in waveguide QED using decoherence free subspaces |
| title_short | Universal quantum computation in waveguide QED using decoherence free subspaces |
| title_sort | universal quantum computation in waveguide qed using decoherence free subspaces |
| topic | quantum computation waveguide QED dissipative assisted gates atom nanophotonics |
| url | https://doi.org/10.1088/1367-2630/18/4/043041 |
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