Dephasing of entangled atoms as an improved test of quantized space time
| Autor: | Martin L. Jones, Benjamin T. H. Varcoe, Mark S. Everitt |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Journal of Physics B: Atomic, Molecular and Optical Physics. 46:224003 |
| ISSN: | 1361-6455 0953-4075 |
| DOI: | 10.1088/0953-4075/46/22/224003 |
| Popis: | Cavity quantum electrodynamics (QED) has been highly successful in the demonstration of many features of quantum mechanics and in this paper we introduce a potential future application of cavity QED to the detection of quantized space time. Wang et al (2006 Class. Quantum Grav. 23 L59), demonstrated that the phase of a particle fluctuated due to interactions with random deviations of a conformal gravitational field and therefore that atom interferometers may be sensitive to these fluctuations. Hence, it is possible that sensitivity to Planck scale effects could be achieved with a sufficiently sensitive interferometer. In this paper we demonstrate that a class of entangled states, the N-atom Greenberger–Horne–Zeilinger states, provide a better scaling than atom interferometry and that current experiments are capable of making a significant impact in this field. We outline an experiment which uses atomic beams of rubidium atoms excited to Rydberg states that undergo controlled collisions in high-Q microwave resonators in a sequence that makes the resulting state highly sensitive to conformal field fluctuations. We show that a significant advance in sensitivity is possible. |
| Databáze: | OpenAIRE |
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