Exact quantum dynamics in structured environments
The dynamics of a wide range of technologically important quantum systems are dominated by their interaction with just a few environmental modes. Such highly structured environments give rise to long-lived bath correlations that induce complex dynamics which are very difficult to simulate. These dif...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-03-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.013265 |
| _version_ | 1827286274681077760 |
|---|---|
| author | Dominic Gribben Aidan Strathearn Jake Iles-Smith Dainius Kilda Ahsan Nazir Brendon W. Lovett Peter Kirton |
| author_facet | Dominic Gribben Aidan Strathearn Jake Iles-Smith Dainius Kilda Ahsan Nazir Brendon W. Lovett Peter Kirton |
| author_sort | Dominic Gribben |
| collection | DOAJ |
| description | The dynamics of a wide range of technologically important quantum systems are dominated by their interaction with just a few environmental modes. Such highly structured environments give rise to long-lived bath correlations that induce complex dynamics which are very difficult to simulate. These difficulties are further aggravated when spatial correlations between different parts of the system are important. By modeling the dynamics of a pair of two-level quantum systems in a common, structured, environment we show that a recently developed general purpose numerical approach, the time-evolving matrix product operator, is capable of accurate simulation under exactly these conditions. We find that tuning the separation to match the wavelength of the dominant environmental modes can drastically modify the system dynamics. To further explore this behavior, we show that the full dynamics of the bath can be calculated directly from those of the system, thus allowing us to develop intuition for the complex dynamics observed. |
| first_indexed | 2024-04-24T10:28:39Z |
| format | Article |
| id | doaj.art-ea8b33cba1b84379a51805c1f250330f |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:28:39Z |
| publishDate | 2020-03-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-ea8b33cba1b84379a51805c1f250330f2024-04-12T16:50:56ZengAmerican Physical SocietyPhysical Review Research2643-15642020-03-012101326510.1103/PhysRevResearch.2.013265Exact quantum dynamics in structured environmentsDominic GribbenAidan StrathearnJake Iles-SmithDainius KildaAhsan NazirBrendon W. LovettPeter KirtonThe dynamics of a wide range of technologically important quantum systems are dominated by their interaction with just a few environmental modes. Such highly structured environments give rise to long-lived bath correlations that induce complex dynamics which are very difficult to simulate. These difficulties are further aggravated when spatial correlations between different parts of the system are important. By modeling the dynamics of a pair of two-level quantum systems in a common, structured, environment we show that a recently developed general purpose numerical approach, the time-evolving matrix product operator, is capable of accurate simulation under exactly these conditions. We find that tuning the separation to match the wavelength of the dominant environmental modes can drastically modify the system dynamics. To further explore this behavior, we show that the full dynamics of the bath can be calculated directly from those of the system, thus allowing us to develop intuition for the complex dynamics observed.http://doi.org/10.1103/PhysRevResearch.2.013265 |
| spellingShingle | Dominic Gribben Aidan Strathearn Jake Iles-Smith Dainius Kilda Ahsan Nazir Brendon W. Lovett Peter Kirton Exact quantum dynamics in structured environments Physical Review Research |
| title | Exact quantum dynamics in structured environments |
| title_full | Exact quantum dynamics in structured environments |
| title_fullStr | Exact quantum dynamics in structured environments |
| title_full_unstemmed | Exact quantum dynamics in structured environments |
| title_short | Exact quantum dynamics in structured environments |
| title_sort | exact quantum dynamics in structured environments |
| url | http://doi.org/10.1103/PhysRevResearch.2.013265 |
| work_keys_str_mv | AT dominicgribben exactquantumdynamicsinstructuredenvironments AT aidanstrathearn exactquantumdynamicsinstructuredenvironments AT jakeilessmith exactquantumdynamicsinstructuredenvironments AT dainiuskilda exactquantumdynamicsinstructuredenvironments AT ahsannazir exactquantumdynamicsinstructuredenvironments AT brendonwlovett exactquantumdynamicsinstructuredenvironments AT peterkirton exactquantumdynamicsinstructuredenvironments |