Quantum Wire Coupled to Light
Experimental advances in cavity QED are raising the prospect of using light to probe quantum materials beyond the linear response regime. The capability to access quantum coherent phenomena would significantly advance the field. However, theoretical work on many-body systems coupled to light in the...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2024-12-01
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| Series: | PRX Quantum |
| Online Access: | http://doi.org/10.1103/PRXQuantum.5.040338 |
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| _version_ | 1846138955213307904 |
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| author | Victor Bradley Kamal Sharma Mohammad Hafezi Wade DeGottardi |
| author_facet | Victor Bradley Kamal Sharma Mohammad Hafezi Wade DeGottardi |
| author_sort | Victor Bradley |
| collection | DOAJ |
| description | Experimental advances in cavity QED are raising the prospect of using light to probe quantum materials beyond the linear response regime. The capability to access quantum coherent phenomena would significantly advance the field. However, theoretical work on many-body systems coupled to light in the quantum coherent regime has been select. Here, we investigate the radiative properties of a finite-sized quantum wire in a microwave cavity. Examples of quantum wires include single-walled carbon nanotubes, a key experimental system in the field of nano-optics and plasmonics. We find that, for a variety of excited states, the repeated emission of photons results in the generation of many-body quantum entanglement. This leads to an increase in the rate at which subsequent photons are emitted, an example of Dicke superradiance. On the other hand, Pauli blocking tends to reduce this effect. Bosonization, the description of the excitations of a one-dimensional electron system as a gas of bosons, is found to be a powerful theoretical tool in this context. Its application means that many of our results generalize to wires with strong electron-electron interactions. The quantum wire thus represents a new platform to realize Dicke-model physics that does not rely on the various fine tunings necessary in traditional realizations involving many spatially isolated emitters. More broadly, this work demonstrates how quantum entanglement can be generated and measured in a many-body system. |
| format | Article |
| id | doaj-art-eb087e10a3094bf6835d7606a05eff43 |
| institution | Kabale University |
| issn | 2691-3399 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | PRX Quantum |
| spelling | doaj-art-eb087e10a3094bf6835d7606a05eff432024-12-06T15:06:11ZengAmerican Physical SocietyPRX Quantum2691-33992024-12-015404033810.1103/PRXQuantum.5.040338Quantum Wire Coupled to LightVictor BradleyKamal SharmaMohammad HafeziWade DeGottardiExperimental advances in cavity QED are raising the prospect of using light to probe quantum materials beyond the linear response regime. The capability to access quantum coherent phenomena would significantly advance the field. However, theoretical work on many-body systems coupled to light in the quantum coherent regime has been select. Here, we investigate the radiative properties of a finite-sized quantum wire in a microwave cavity. Examples of quantum wires include single-walled carbon nanotubes, a key experimental system in the field of nano-optics and plasmonics. We find that, for a variety of excited states, the repeated emission of photons results in the generation of many-body quantum entanglement. This leads to an increase in the rate at which subsequent photons are emitted, an example of Dicke superradiance. On the other hand, Pauli blocking tends to reduce this effect. Bosonization, the description of the excitations of a one-dimensional electron system as a gas of bosons, is found to be a powerful theoretical tool in this context. Its application means that many of our results generalize to wires with strong electron-electron interactions. The quantum wire thus represents a new platform to realize Dicke-model physics that does not rely on the various fine tunings necessary in traditional realizations involving many spatially isolated emitters. More broadly, this work demonstrates how quantum entanglement can be generated and measured in a many-body system.http://doi.org/10.1103/PRXQuantum.5.040338 |
| spellingShingle | Victor Bradley Kamal Sharma Mohammad Hafezi Wade DeGottardi Quantum Wire Coupled to Light PRX Quantum |
| title | Quantum Wire Coupled to Light |
| title_full | Quantum Wire Coupled to Light |
| title_fullStr | Quantum Wire Coupled to Light |
| title_full_unstemmed | Quantum Wire Coupled to Light |
| title_short | Quantum Wire Coupled to Light |
| title_sort | quantum wire coupled to light |
| url | http://doi.org/10.1103/PRXQuantum.5.040338 |
| work_keys_str_mv | AT victorbradley quantumwirecoupledtolight AT kamalsharma quantumwirecoupledtolight AT mohammadhafezi quantumwirecoupledtolight AT wadedegottardi quantumwirecoupledtolight |