{"data":{"abstract":{"value":"
We demonstrate the hallmark concept of periodic collapse and revival of coherence in a room-temperature ensemble of quantum dots (QDs) in the form of a 1.5-mm-long optical amplifier. Femtosecond excitation pulses induce coherent interactions with a number of discrete homogeneous QD subgroups within an inhomogeneously broadened ensemble, which interfere constructively to induce coherent revival (CR). The amplitude decay of CR is dictated by the QD homogeneous linewidth, thus enabling its extraction in a double-pulse Ramsey-type experiment. The more common photon echo technique is also invoked and yields the same linewidth provided that both experiments use the same bias. A dephasing time longer than 5 ps is extracted. This is a record long for a room-temperature QD ensemble and testifies to the high quality of the InAs/InP QDs used in the experiments. Measured electrical bias and temperature dependencies of the transverse relaxation times ( and ) enable the determination of the two main decoherence mechanisms: carrier-carrier and carrier-phonon scatterings.
","format":"html"},"articleType":"article","authors":[{"type":"Person","name":"Igor Khanonkin","firstname":"Igor","surname":"Khanonkin","affiliationIds":["a1"]},{"type":"Person","name":"Ori Eyal","firstname":"Ori","surname":"Eyal","affiliationIds":["a1"]},{"type":"Person","name":"Johann Peter Reithmaier","firstname":"Johann Peter","surname":"Reithmaier","affiliationIds":["a2"]},{"type":"Person","name":"Gadi Eisenstein","firstname":"Gadi","surname":"Eisenstein","affiliationIds":["a1"]}],"affiliations":[{"name":"Andrew and Erna Viterbi Department of Electrical Engineering and Russell Berrie Nanotechnology Institute, Technion, Haifa 32000, Israel","id":"a1"},{"name":"Institute of Nanostructure Technologies and Analytics, Technische Physik, CINSaT, University of Kassel, Kassel 34132, Germany","id":"a2"}],"notes":[{"format":"html","value":"ikhanonkin@technion.ac.il
","label":"*","id":"n1","type":"contrib"}],"date":"2021-07-20","fundings":[{"funderId":"http://dx.doi.org/10.13039/501100003986","funderName":"Jacobs Foundation","awards":[]},{"funderId":"http://dx.doi.org/10.13039/501100003977","funderName":"Israel Science Foundation","awards":["1504/16"]}],"type":"article","metadata_last_modified_at":"2021-07-20T14:34:51+0000","last_modified_at":"2021-07-20T14:34:51+0000","id":"10.1103/PhysRevResearch.3.033073","identifiers":{"doi":"10.1103/PhysRevResearch.3.033073","arxiv":"arXiv:2010.15198"},"issue":{"number":"3"},"pageStart":"033073","hasArticleId":true,"numPages":10,"classificationSchemes":{"physh":{"concepts":[{"id":"4f05e51d-a3d3-4c89-bbeb-bbfa122e6791","facet":{"id":"705f7ed8-5e20-47e1-8ca4-fa7feea8ad84"},"primary":false},{"id":"6bdea32e-2fdf-4421-b982-41a2a011a363","facet":{"id":"705f7ed8-5e20-47e1-8ca4-fa7feea8ad84"},"primary":false},{"id":"3123cbf9-460d-467a-9306-b4fb316daddd","facet":{"id":"bdb1ef91-b776-4e36-8f8f-3e93666bac1e"},"primary":false},{"id":"f88f9d2e-9c55-48d2-aab4-c24fba575e45","facet":{"id":"bdb1ef91-b776-4e36-8f8f-3e93666bac1e"},"primary":false},{"id":"b906be48-c729-48b7-ac18-dfaf8c7901de","facet":{"id":"bdb1ef91-b776-4e36-8f8f-3e93666bac1e"},"primary":true},{"id":"cd384806-a109-4fdd-9efc-c15bde603baa","facet":{"id":"bdb1ef91-b776-4e36-8f8f-3e93666bac1e"},"primary":false},{"id":"709d46e1-304b-4708-a494-d27c13e9ca2c","facet":{"id":"f45b3c40-959c-4e90-ba0e-38232980802a"},"primary":false}],"disciplines":["8ab3d2b7-b50b-460e-b086-8990cfcbd350","a48f173e-6459-4642-a711-a6e731807625","510fc218-8774-4547-ab09-fc6cef0c9a03"]}},"publisher":{"name":"APS"},"rights":{"rightsStatement":"Published by the American Physical Society","copyrightYear":2021,"copyrightHolders":[],"creativeCommons":true,"licenses":[{"url":"https://creativecommons.org/licenses/by/4.0/","licenseStatement":"Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI."}]},"journal":{"id":"PRRESEARCH","abbreviatedName":"Phys. Rev. Research","name":"Physical Review Research"},"title":{"value":"Room-temperature coherent revival in an ensemble of quantum dots","format":"html"},"volume":{"number":"3"}}}