Protecting solid-state spins from a strongly coupled environment
Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft. Quantum memories are critical for solid-state quantum computing devices and a good quantum memory requires both long storage time and fast read/write operations. A promising system is the nitrogen-vacancy (NV) center i...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2020
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| Online Access: | https://hdl.handle.net/1721.1/124223 |
| _version_ | 1826190841060786176 |
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| author | Chen, Mo Sun, Won Kyu Calvin Saha, Kasturi Jaskula, Jean-Christophe Cappellaro, Paola |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Chen, Mo Sun, Won Kyu Calvin Saha, Kasturi Jaskula, Jean-Christophe Cappellaro, Paola |
| author_sort | Chen, Mo |
| collection | MIT |
| description | Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft. Quantum memories are critical for solid-state quantum computing devices and a good quantum memory requires both long storage time and fast read/write operations. A promising system is the nitrogen-vacancy (NV) center in diamond, where the NV electronic spin serves as the computing qubit and a nearby nuclear spin as the memory qubit. Previous works used remote, weakly coupled 13C nuclear spins, trading read/write speed for long storage time. Here we focus instead on the intrinsic strongly coupled 14N nuclear spin. We first quantitatively understand its decoherence mechanism, identifying as its source the electronic spin that acts as a quantum fluctuator. We then propose a scheme to protect the quantum memory from the fluctuating noise by applying dynamical decoupling on the environment itself. We demonstrate a factor of 3 enhancement of the storage time in a proof-of-principle experiment, showing the potential for a quantum memory that combines fast operation with long coherence time. |
| first_indexed | 2024-09-23T08:46:09Z |
| format | Article |
| id | mit-1721.1/124223 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:46:09Z |
| publishDate | 2020 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1242232022-09-30T11:09:38Z Protecting solid-state spins from a strongly coupled environment Chen, Mo Sun, Won Kyu Calvin Saha, Kasturi Jaskula, Jean-Christophe Cappellaro, Paola Massachusetts Institute of Technology. Research Laboratory of Electronics Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft. Quantum memories are critical for solid-state quantum computing devices and a good quantum memory requires both long storage time and fast read/write operations. A promising system is the nitrogen-vacancy (NV) center in diamond, where the NV electronic spin serves as the computing qubit and a nearby nuclear spin as the memory qubit. Previous works used remote, weakly coupled 13C nuclear spins, trading read/write speed for long storage time. Here we focus instead on the intrinsic strongly coupled 14N nuclear spin. We first quantitatively understand its decoherence mechanism, identifying as its source the electronic spin that acts as a quantum fluctuator. We then propose a scheme to protect the quantum memory from the fluctuating noise by applying dynamical decoupling on the environment itself. We demonstrate a factor of 3 enhancement of the storage time in a proof-of-principle experiment, showing the potential for a quantum memory that combines fast operation with long coherence time. 2020-03-24T14:05:40Z 2020-03-24T14:05:40Z 2018-06 2020-02-20T17:36:39Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/124223 Chen, Mo et al. "Protecting solid-state spins from a strongly coupled environment." New Journal of Physics 20 (2018): 063011-1 to 063011-20 © 2018 The Author(s) en 10.1088/1367-2630/AAC542 New Journal of Physics Creative Commons Attribution 3.0 unported license https://creativecommons.org/licenses/by/3.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Chen, Mo Sun, Won Kyu Calvin Saha, Kasturi Jaskula, Jean-Christophe Cappellaro, Paola Protecting solid-state spins from a strongly coupled environment |
| title | Protecting solid-state spins from a strongly coupled environment |
| title_full | Protecting solid-state spins from a strongly coupled environment |
| title_fullStr | Protecting solid-state spins from a strongly coupled environment |
| title_full_unstemmed | Protecting solid-state spins from a strongly coupled environment |
| title_short | Protecting solid-state spins from a strongly coupled environment |
| title_sort | protecting solid state spins from a strongly coupled environment |
| url | https://hdl.handle.net/1721.1/124223 |
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