Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities
We study a circularly moving impurity in an atomic condensate for the realization of superradiance phenomena in tabletop experiments. The impurity is coupled to the density fluctuations of the condensate and, in a quantum field theory language, it serves as an analog of a detector for the quantum ph...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-10-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.042009 |
| _version_ | 1797211189281816576 |
|---|---|
| author | Jamir Marino Gabriel Menezes Iacopo Carusotto |
| author_facet | Jamir Marino Gabriel Menezes Iacopo Carusotto |
| author_sort | Jamir Marino |
| collection | DOAJ |
| description | We study a circularly moving impurity in an atomic condensate for the realization of superradiance phenomena in tabletop experiments. The impurity is coupled to the density fluctuations of the condensate and, in a quantum field theory language, it serves as an analog of a detector for the quantum phonon field. For sufficiently large rotation speeds, the zero-point fluctuations of the phonon field induce a sizable excitation rate of the detector even when the condensate is initially at rest in its ground state. For spatially confined condensates and harmonic detectors, such a superradiant emission of sound waves provides a dynamical instability mechanism, leading to a phonon lasing concept. Following an analogy with the theory of rotating black holes, our results suggest a promising avenue to quantum simulate basic interaction processes involving fast-moving detectors in curved space-times. |
| first_indexed | 2024-04-24T10:22:32Z |
| format | Article |
| id | doaj.art-2be6f1ec14d44102ae9b2df04e64e9b6 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:22:32Z |
| publishDate | 2020-10-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-2be6f1ec14d44102ae9b2df04e64e9b62024-04-12T17:02:25ZengAmerican Physical SocietyPhysical Review Research2643-15642020-10-012404200910.1103/PhysRevResearch.2.042009Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilitiesJamir MarinoGabriel MenezesIacopo CarusottoWe study a circularly moving impurity in an atomic condensate for the realization of superradiance phenomena in tabletop experiments. The impurity is coupled to the density fluctuations of the condensate and, in a quantum field theory language, it serves as an analog of a detector for the quantum phonon field. For sufficiently large rotation speeds, the zero-point fluctuations of the phonon field induce a sizable excitation rate of the detector even when the condensate is initially at rest in its ground state. For spatially confined condensates and harmonic detectors, such a superradiant emission of sound waves provides a dynamical instability mechanism, leading to a phonon lasing concept. Following an analogy with the theory of rotating black holes, our results suggest a promising avenue to quantum simulate basic interaction processes involving fast-moving detectors in curved space-times.http://doi.org/10.1103/PhysRevResearch.2.042009 |
| spellingShingle | Jamir Marino Gabriel Menezes Iacopo Carusotto Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities Physical Review Research |
| title | Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities |
| title_full | Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities |
| title_fullStr | Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities |
| title_full_unstemmed | Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities |
| title_short | Zero-point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities |
| title_sort | zero point excitation of a circularly moving detector in an atomic condensate and phonon laser dynamical instabilities |
| url | http://doi.org/10.1103/PhysRevResearch.2.042009 |
| work_keys_str_mv | AT jamirmarino zeropointexcitationofacircularlymovingdetectorinanatomiccondensateandphononlaserdynamicalinstabilities AT gabrielmenezes zeropointexcitationofacircularlymovingdetectorinanatomiccondensateandphononlaserdynamicalinstabilities AT iacopocarusotto zeropointexcitationofacircularlymovingdetectorinanatomiccondensateandphononlaserdynamicalinstabilities |