Operation speed of polariton condensate switches gated by excitons
We present a time-resolved photoluminescence (PL) study in real and momentum space of a polariton condensate switch in a quasi-one-dimensional semiconductor microcavity. The polariton flow across the ridge is gated by excitons inducing a barrier potential due to repulsive interactions. A study of th...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/104982 http://hdl.handle.net/10220/20416 |
| _version_ | 1826123741465149440 |
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| author | Antón, C. Liew, Timothy Chi Hin Sarkar, D. Martín, M. D. Hatzopoulos, Z. Eldridge, P. S. Savvidis, P. G. Viña, L. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Antón, C. Liew, Timothy Chi Hin Sarkar, D. Martín, M. D. Hatzopoulos, Z. Eldridge, P. S. Savvidis, P. G. Viña, L. |
| author_sort | Antón, C. |
| collection | NTU |
| description | We present a time-resolved photoluminescence (PL) study in real and momentum space of a polariton condensate switch in a quasi-one-dimensional semiconductor microcavity. The polariton flow across the ridge is gated by excitons inducing a barrier potential due to repulsive interactions. A study of the device operation dependence on the power of the pulsed gate beam obtains a satisfactory compromise for the on-off signal ratio and switching time of the order of 0.3 and ∼50 ps, respectively. The opposite transition is governed by the long-lived gate excitons, consequently, the off-on switching time is ∼200 ps, limiting the overall operation speed of the device to ∼3 GHz. The experimental results are compared to numerical simulations based on a generalized Gross-Pitaevskii equation, taking into account incoherent pumping, decay, and energy relaxation within the condensate. |
| first_indexed | 2024-10-01T06:09:17Z |
| format | Journal Article |
| id | ntu-10356/104982 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:09:17Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1049822023-02-28T19:45:20Z Operation speed of polariton condensate switches gated by excitons Antón, C. Liew, Timothy Chi Hin Sarkar, D. Martín, M. D. Hatzopoulos, Z. Eldridge, P. S. Savvidis, P. G. Viña, L. School of Physical and Mathematical Sciences DRNTU::Science::Physics We present a time-resolved photoluminescence (PL) study in real and momentum space of a polariton condensate switch in a quasi-one-dimensional semiconductor microcavity. The polariton flow across the ridge is gated by excitons inducing a barrier potential due to repulsive interactions. A study of the device operation dependence on the power of the pulsed gate beam obtains a satisfactory compromise for the on-off signal ratio and switching time of the order of 0.3 and ∼50 ps, respectively. The opposite transition is governed by the long-lived gate excitons, consequently, the off-on switching time is ∼200 ps, limiting the overall operation speed of the device to ∼3 GHz. The experimental results are compared to numerical simulations based on a generalized Gross-Pitaevskii equation, taking into account incoherent pumping, decay, and energy relaxation within the condensate. Published version 2014-08-27T07:10:49Z 2019-12-06T21:44:04Z 2014-08-27T07:10:49Z 2019-12-06T21:44:04Z 2014 2014 Journal Article Antón, C., Liew, T. C. H., Sarkar, D., Martín, M. D., Hatzopoulos, Z., Eldridge, P. S., et al. (2014). Operation speed of polariton condensate switches gated by excitons. Physical Review B, 89(23), 235312-. 1098-0121 https://hdl.handle.net/10356/104982 http://hdl.handle.net/10220/20416 10.1103/PhysRevB.89.235312 en Physical review B © 2014 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: http://dx.doi.org/10.1103/PhysRevB.89.235312. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | DRNTU::Science::Physics Antón, C. Liew, Timothy Chi Hin Sarkar, D. Martín, M. D. Hatzopoulos, Z. Eldridge, P. S. Savvidis, P. G. Viña, L. Operation speed of polariton condensate switches gated by excitons |
| title | Operation speed of polariton condensate switches gated by excitons |
| title_full | Operation speed of polariton condensate switches gated by excitons |
| title_fullStr | Operation speed of polariton condensate switches gated by excitons |
| title_full_unstemmed | Operation speed of polariton condensate switches gated by excitons |
| title_short | Operation speed of polariton condensate switches gated by excitons |
| title_sort | operation speed of polariton condensate switches gated by excitons |
| topic | DRNTU::Science::Physics |
| url | https://hdl.handle.net/10356/104982 http://hdl.handle.net/10220/20416 |
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