Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator
The ability to live in coherent superpositions is a signature trait of quantum systems and constitutes an irreplaceable resource for quantum-enhanced technologies. However, decoherence effects usually destroy quantum superpositions. It has been recently predicted that, in a composite quantum system...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
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American Physical Society
2016
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| Online Access: | https://eprints.nottingham.ac.uk/40785/ |
| _version_ | 1848796133324750848 |
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| author | Silva, Isabela A. Souza, Alexandre M. Bromley, Thomas R. Cianciaruso, Marco Marx, Raimund Sarthour, Roberto S. Oliveira, Ivan S. Lo Franco, Rosario Glaser, Steffen J. deAzevedo, Eduardo R. Soares-Pinto, Diogo O. Adesso, Gerardo |
| author_facet | Silva, Isabela A. Souza, Alexandre M. Bromley, Thomas R. Cianciaruso, Marco Marx, Raimund Sarthour, Roberto S. Oliveira, Ivan S. Lo Franco, Rosario Glaser, Steffen J. deAzevedo, Eduardo R. Soares-Pinto, Diogo O. Adesso, Gerardo |
| author_sort | Silva, Isabela A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The ability to live in coherent superpositions is a signature trait of quantum systems and constitutes an irreplaceable resource for quantum-enhanced technologies. However, decoherence effects usually destroy quantum superpositions. It has been recently predicted that, in a composite quantum system exposed to dephasing noise, quantum coherence in a transversal reference basis can stay protected for indefinite time. This can occur for a class of quantum states independently of the measure used to quantify coherence, and requires no control on the system during the dynamics. Here, such an invariant coherence phenomenon is observed experimentally in two different setups based on nuclear magnetic resonance at room temperature, realising an effective quantum simulator of two- and four-qubit spin systems. Our study further reveals a novel interplay between coherence and various forms of correlations, and highlights the natural resilience of quantum effects in complex systems. |
| first_indexed | 2025-11-14T19:43:08Z |
| format | Article |
| id | nottingham-40785 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:43:08Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-407852020-05-04T18:17:08Z https://eprints.nottingham.ac.uk/40785/ Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator Silva, Isabela A. Souza, Alexandre M. Bromley, Thomas R. Cianciaruso, Marco Marx, Raimund Sarthour, Roberto S. Oliveira, Ivan S. Lo Franco, Rosario Glaser, Steffen J. deAzevedo, Eduardo R. Soares-Pinto, Diogo O. Adesso, Gerardo The ability to live in coherent superpositions is a signature trait of quantum systems and constitutes an irreplaceable resource for quantum-enhanced technologies. However, decoherence effects usually destroy quantum superpositions. It has been recently predicted that, in a composite quantum system exposed to dephasing noise, quantum coherence in a transversal reference basis can stay protected for indefinite time. This can occur for a class of quantum states independently of the measure used to quantify coherence, and requires no control on the system during the dynamics. Here, such an invariant coherence phenomenon is observed experimentally in two different setups based on nuclear magnetic resonance at room temperature, realising an effective quantum simulator of two- and four-qubit spin systems. Our study further reveals a novel interplay between coherence and various forms of correlations, and highlights the natural resilience of quantum effects in complex systems. American Physical Society 2016-10-14 Article PeerReviewed Silva, Isabela A., Souza, Alexandre M., Bromley, Thomas R., Cianciaruso, Marco, Marx, Raimund, Sarthour, Roberto S., Oliveira, Ivan S., Lo Franco, Rosario, Glaser, Steffen J., deAzevedo, Eduardo R., Soares-Pinto, Diogo O. and Adesso, Gerardo (2016) Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator. Physical Review Letters, 117 (16). p. 160402. ISSN 1079-7114 http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.160402 doi:10.1103/PhysRevLett.117.160402 doi:10.1103/PhysRevLett.117.160402 |
| spellingShingle | Silva, Isabela A. Souza, Alexandre M. Bromley, Thomas R. Cianciaruso, Marco Marx, Raimund Sarthour, Roberto S. Oliveira, Ivan S. Lo Franco, Rosario Glaser, Steffen J. deAzevedo, Eduardo R. Soares-Pinto, Diogo O. Adesso, Gerardo Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| title | Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| title_full | Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| title_fullStr | Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| title_full_unstemmed | Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| title_short | Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| title_sort | observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator |
| url | https://eprints.nottingham.ac.uk/40785/ https://eprints.nottingham.ac.uk/40785/ https://eprints.nottingham.ac.uk/40785/ |