Decay of spin coherences in one-dimensional spin systems
Strategies to protect multi-qubit states against decoherence are difficult to formulate because of their complex many-body dynamics. A better knowledge of the decay dynamics would help in the construction of dynamical decoupling control schemes. Here we use solid-state nuclear magnetic resonance tec...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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IOP Publishing
2013
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| Online Access: | http://hdl.handle.net/1721.1/83205 https://orcid.org/0000-0003-0544-5263 https://orcid.org/0000-0003-3207-594X |
| _version_ | 1826217053586980864 |
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| author | Kaur, Gurneet Ajoy, Ashok Cappellaro, Paola |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Kaur, Gurneet Ajoy, Ashok Cappellaro, Paola |
| author_sort | Kaur, Gurneet |
| collection | MIT |
| description | Strategies to protect multi-qubit states against decoherence are difficult to formulate because of their complex many-body dynamics. A better knowledge of the decay dynamics would help in the construction of dynamical decoupling control schemes. Here we use solid-state nuclear magnetic resonance techniques to experimentally investigate decay of coherent multi-spin states in linear spin chains. Leveraging on the quasi-one-dimension geometry of fluorapatite crystal spin systems, we can gain a deeper insight on the multi-spin states created by the coherent evolution, and their subsequent decay, than it is possible in three-dimensional (3D) systems. We are then able to formulate an analytical model that captures the key features of the decay. We can thus compare the decoherence behavior for different initial states of the spin chain and link their decay rate to the state characteristics, in particular their coherence and long-range correlation among spins. Our experimental and theoretical study shows that the spin chains undergo a rich dynamics, with a slower decay rate than for the 3D case, and thus might be more amenable to decoupling techniques. |
| first_indexed | 2024-09-23T16:57:18Z |
| format | Article |
| id | mit-1721.1/83205 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:57:18Z |
| publishDate | 2013 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/832052022-10-03T09:22:58Z Decay of spin coherences in one-dimensional spin systems Kaur, Gurneet Ajoy, Ashok Cappellaro, Paola Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Kaur, Gurneet Ajoy, Ashok Cappellaro, Paola Strategies to protect multi-qubit states against decoherence are difficult to formulate because of their complex many-body dynamics. A better knowledge of the decay dynamics would help in the construction of dynamical decoupling control schemes. Here we use solid-state nuclear magnetic resonance techniques to experimentally investigate decay of coherent multi-spin states in linear spin chains. Leveraging on the quasi-one-dimension geometry of fluorapatite crystal spin systems, we can gain a deeper insight on the multi-spin states created by the coherent evolution, and their subsequent decay, than it is possible in three-dimensional (3D) systems. We are then able to formulate an analytical model that captures the key features of the decay. We can thus compare the decoherence behavior for different initial states of the spin chain and link their decay rate to the state characteristics, in particular their coherence and long-range correlation among spins. Our experimental and theoretical study shows that the spin chains undergo a rich dynamics, with a slower decay rate than for the 3D case, and thus might be more amenable to decoupling techniques. National Science Foundation (U.S.) (Grant DMG-1005926) United States. Air Force Office of Scientific Research. Young Investigator Program 2013-12-23T15:58:39Z 2013-12-23T15:58:39Z 2013-09 2013-06 Article http://purl.org/eprint/type/JournalArticle 1367-2630 http://hdl.handle.net/1721.1/83205 Kaur, G, A Ajoy, and P Cappellaro. “Decay of spin coherences in one-dimensional spin systems.” New Journal of Physics 15, no. 9 (September 1, 2013): 093035. https://orcid.org/0000-0003-0544-5263 https://orcid.org/0000-0003-3207-594X en_US http://dx.doi.org/10.1088/1367-2630/15/9/093035 New Journal of Physics http://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Kaur, Gurneet Ajoy, Ashok Cappellaro, Paola Decay of spin coherences in one-dimensional spin systems |
| title | Decay of spin coherences in one-dimensional spin systems |
| title_full | Decay of spin coherences in one-dimensional spin systems |
| title_fullStr | Decay of spin coherences in one-dimensional spin systems |
| title_full_unstemmed | Decay of spin coherences in one-dimensional spin systems |
| title_short | Decay of spin coherences in one-dimensional spin systems |
| title_sort | decay of spin coherences in one dimensional spin systems |
| url | http://hdl.handle.net/1721.1/83205 https://orcid.org/0000-0003-0544-5263 https://orcid.org/0000-0003-3207-594X |
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