Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid
Recent reports have revealed the rich long-lived Mossbauer phenomenon of 93mNb, in which it has long been speculated that the delocalized 93mNb undergoes Bose-Einstein condensation following an increase in the 93mNb density beyond the threshold of 1012 cm−3 at room temperature. We now report on the...
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MDPI AG
2017-07-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/7/7/196 |
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| author | Yao Cheng Ting-Han Lin Chih-Hao Lee Shun-Chi Wu |
| author_facet | Yao Cheng Ting-Han Lin Chih-Hao Lee Shun-Chi Wu |
| author_sort | Yao Cheng |
| collection | DOAJ |
| description | Recent reports have revealed the rich long-lived Mossbauer phenomenon of 93mNb, in which it has long been speculated that the delocalized 93mNb undergoes Bose-Einstein condensation following an increase in the 93mNb density beyond the threshold of 1012 cm−3 at room temperature. We now report on the superradiant Rayleigh of the M4 γ at 662 keV scattered into end-fire modes along the long axis of the sample, as evidence of Bose-Einstein condensation. We observed the Arago (Poisson’s) spot in order to demonstrate a near-field γ-ray diffraction from a mm-sized γ source, as well as a γ interference beyond the Huygens-Fresnel principle. During the 107-day monitoring period, seven Sisyphus cycles of mode hopping appeared in the superradiance, which demonstrates the optomechanic bistabilty provided by the collective interaction between the spinor quantum fluid and the impinging γs. Condensate-light interaction produces a pm matter-wave grating to become a Fabry-Pérot resonator with a Q-factor on the order of 1020, from which end-fired γs lase. |
| first_indexed | 2024-04-11T22:13:26Z |
| format | Article |
| id | doaj.art-2f06d6a8c613457aab2a0ca568eef4f8 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T22:13:26Z |
| publishDate | 2017-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-2f06d6a8c613457aab2a0ca568eef4f82022-12-22T04:00:30ZengMDPI AGCrystals2073-43522017-07-017719610.3390/cryst7070196cryst7070196Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum FluidYao Cheng0Ting-Han Lin1Chih-Hao Lee2Shun-Chi Wu3Department of Engineering Physics, Tsinghua University, Haidian, 100084 Beijing, ChinaDepartment of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, TaiwanDepartment of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, TaiwanDepartment of Engineering and System Science, National Tsing Hua University, Hsinchu 30013, TaiwanRecent reports have revealed the rich long-lived Mossbauer phenomenon of 93mNb, in which it has long been speculated that the delocalized 93mNb undergoes Bose-Einstein condensation following an increase in the 93mNb density beyond the threshold of 1012 cm−3 at room temperature. We now report on the superradiant Rayleigh of the M4 γ at 662 keV scattered into end-fire modes along the long axis of the sample, as evidence of Bose-Einstein condensation. We observed the Arago (Poisson’s) spot in order to demonstrate a near-field γ-ray diffraction from a mm-sized γ source, as well as a γ interference beyond the Huygens-Fresnel principle. During the 107-day monitoring period, seven Sisyphus cycles of mode hopping appeared in the superradiance, which demonstrates the optomechanic bistabilty provided by the collective interaction between the spinor quantum fluid and the impinging γs. Condensate-light interaction produces a pm matter-wave grating to become a Fabry-Pérot resonator with a Q-factor on the order of 1020, from which end-fired γs lase.https://www.mdpi.com/2073-4352/7/7/196long-lived Mossbauer effectdelocalized nuclear γ excitationsuperradiant Rayleigh scatteringphotonic crystalγ laserspinor quantum fluidsymmetry-protected phasemagnetoelectric effecttopological defectsMajorana fermions |
| spellingShingle | Yao Cheng Ting-Han Lin Chih-Hao Lee Shun-Chi Wu Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid Crystals long-lived Mossbauer effect delocalized nuclear γ excitation superradiant Rayleigh scattering photonic crystal γ laser spinor quantum fluid symmetry-protected phase magnetoelectric effect topological defects Majorana fermions |
| title | Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid |
| title_full | Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid |
| title_fullStr | Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid |
| title_full_unstemmed | Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid |
| title_short | Superradiant MeV γ Scattered by a Room-Temperature Spinor Quantum Fluid |
| title_sort | superradiant mev γ scattered by a room temperature spinor quantum fluid |
| topic | long-lived Mossbauer effect delocalized nuclear γ excitation superradiant Rayleigh scattering photonic crystal γ laser spinor quantum fluid symmetry-protected phase magnetoelectric effect topological defects Majorana fermions |
| url | https://www.mdpi.com/2073-4352/7/7/196 |
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