Entanglement assisted probe of the non-Markovian to Markovian transition in open quantum system dynamics
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917664918601728 |
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| author | Gaikwad, Chandrashekhar Kowsari, Daria Brame, Carson Song, Xingrui Zhang, Haimeng Esposito, Martina Ranadive, Arpit Cappelli, Giulio Roch, Nicolas Levenson-Falk, Eli M. Murch, Kater W. |
| author_facet | Gaikwad, Chandrashekhar Kowsari, Daria Brame, Carson Song, Xingrui Zhang, Haimeng Esposito, Martina Ranadive, Arpit Cappelli, Giulio Roch, Nicolas Levenson-Falk, Eli M. Murch, Kater W. |
| contents | We utilize a superconducting qubit processor to experimentally probe non-Markovian dynamics of an entangled qubit pair. We prepare an entangled state between two qubits and monitor the evolution of entanglement over time as one of the qubits interacts with a small quantum environment consisting of an auxiliary transmon qubit coupled to its readout cavity. We observe the collapse and revival of the entanglement as a signature of quantum memory effects in the environment. We then engineer the non-Markovianity of the environment by populating its readout cavity with thermal photons to show a transition from non-Markovian to Markovian dynamics, ultimately reaching a regime where the quantum Zeno effect creates a decoherence-free subspace that effectively stabilizes the entanglement between the qubits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_13735 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Entanglement assisted probe of the non-Markovian to Markovian transition in open quantum system dynamics Gaikwad, Chandrashekhar Kowsari, Daria Brame, Carson Song, Xingrui Zhang, Haimeng Esposito, Martina Ranadive, Arpit Cappelli, Giulio Roch, Nicolas Levenson-Falk, Eli M. Murch, Kater W. Quantum Physics We utilize a superconducting qubit processor to experimentally probe non-Markovian dynamics of an entangled qubit pair. We prepare an entangled state between two qubits and monitor the evolution of entanglement over time as one of the qubits interacts with a small quantum environment consisting of an auxiliary transmon qubit coupled to its readout cavity. We observe the collapse and revival of the entanglement as a signature of quantum memory effects in the environment. We then engineer the non-Markovianity of the environment by populating its readout cavity with thermal photons to show a transition from non-Markovian to Markovian dynamics, ultimately reaching a regime where the quantum Zeno effect creates a decoherence-free subspace that effectively stabilizes the entanglement between the qubits. |
| title | Entanglement assisted probe of the non-Markovian to Markovian transition in open quantum system dynamics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2401.13735 |