Controlling decoherence via PT-symmetric non-Hermitian open quantum systems
| dc.contributor.author | Dey, Sanjib | |
| dc.contributor.author | Raj, Aswathy | |
| dc.contributor.author | Goyal, S.K. | |
| dc.date.accessioned | 2020-11-18T06:02:28Z | |
| dc.date.available | 2020-11-18T06:02:28Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | We have studied the effect of a non-Hermitian Bosonic bath on the dynamics of a two-level spin system. The non-Hermitian Hamiltonian of the bath is chosen such that it converges to the harmonic oscillator Hamiltonian when the non-Hermiticity is switched off. We calculate the dynamics of the spin system and found that the non-Hermiticity can have positive as well as negative effects on the coherence of the system. However, the decoherence can be completely eliminated by choosing the non-Hermiticity parameter and the phase of the system bath interaction appropriately. We have also studied the effect of this bath on the entanglement of a two-spin system when the bath is acting only on one spin. | en_US |
| dc.identifier.citation | Physics Letters, Section A: General, Atomic and Solid State Physics, 383(30). | en_US |
| dc.identifier.other | https://doi.org/10.1016/j.physleta.2019.125931 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/1753 | |
| dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0375960119307753 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.subject | Decoherence | en_US |
| dc.subject | Quantum entanglement | en_US |
| dc.subject | Open quantum systems | en_US |
| dc.subject | PT-symmetry | en_US |
| dc.title | Controlling decoherence via PT-symmetric non-Hermitian open quantum systems | en_US |
| dc.type | Article | en_US |