Bulletin of the American Physical Society
46th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 60, Number 7
Monday–Friday, June 8–12, 2015; Columbus, Ohio
Session N3: Invited Session: Cavity QED in Solid State and Hybrid Systems |
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Chair: Pierre Meystre Room: Franklin AB |
Thursday, June 11, 2015 10:30AM - 11:00AM |
N3.00001: Phonon Assisted Gain in a Semiconductor Double Quantum Dot Maser Invited Speaker: Michael Gullans Lasers provide fundamental insights into the interaction between light and matter. Those operating in the few-emitter limit probe this interaction at the level where quantum effects are crucial for understanding the device operation. We develop a microscopic model for the recently demonstrated double quantum dot (DQD) maser. In characterizing the gain of this device we find that, in addition to the direct stimulated emission of photons, there is a large contribution from transitions that involve the simultaneous emission of a photon and a phonon. These theoretical results are compared to experiment and good agreement is found. Due to the sharp threshold behavior of the lasing transition, this work indicates that the maser can serve as an extremely sensitive probe of the mesoscopic environment of the DQD and provides insight into the prospects for long-distance entanglement between two cavity coupled DQDs. [Preview Abstract] |
Thursday, June 11, 2015 11:00AM - 11:30AM |
N3.00002: A hybrid system of a membrane oscillator coupled to ultracold atoms Invited Speaker: Tobias Kampschulte The control over micro- and nanomechanical oscillators has recently made impressive progress. First experiments demonstrated ground-state cooling and single-phonon control of high-frequency oscillators using cryogenic cooling and techniques of cavity optomechanics. Coupling engineered mechanical structures to microscopic quantum system with good coherence properties offers new possibilities for quantum control of mechanical vibrations, precision sensing and quantum-level signal transduction. Ultracold atoms are an attractive choice for such hybrid systems: Mechanical can either be coupled to the motional state of trapped atoms, which can routinely be ground-state cooled, or to the internal states, for which a toolbox of coherent manipulation and detection exists. Furthermore, atomic collective states with non-classical properties can be exploited to infer the mechanical motion with reduced quantum noise. Here we use trapped ultracold atoms to sympathetically cool the fundamental vibrational mode of a Si$_3$N$_4$ membrane [1]. The coupling of membrane and atomic motion is mediated by laser light over a macroscopic distance and enhanced by an optical cavity around the membrane. The observed cooling of the membrane from room temperature to 650 $\pm$ 230 mK shows that our hybrid mechanical-atomic system operates at a large cooperativity. Our scheme could provide ground-state cooling and quantum control of low-frequency oscillators such as levitated nanoparticles, in a regime where purely optomechanical techniques cannot reach the ground state. Furthermore, we will present a scheme where an optomechanical system is coupled to internal states of ultracold atoms [2]. The mechanical motion is translated into a polarization rotation which drives Raman transitions between atomic ground states. Compared to the motional-state coupling, the new scheme enables to couple atoms to high-frequency structures such as optomechanical crystals.\\[4pt] [1] A. J\"{o}ckel, A. Faber, T. Kampschulte, M. Korppi, M. T. Rakher, and P. Treutlein, Nature Nanotech. 10, 55-59 (2015).\\[0pt] [2] B. Vogell, T. Kampschulte, M. T. Rakher, A. Faber, P. Treutlein, K. Hammerer, and P. Zoller, arXiv:1412.5095 (2014). [Preview Abstract] |
Thursday, June 11, 2015 11:30AM - 12:00PM |
N3.00003: Photoemission and Masing in a Cavity-Coupled Semiconductor Double Quantum Dot Invited Speaker: Jason Petta Semiconductor circuit QED devices are exciting platforms for studying the coupled dynamics of single charges, photons, and phonons. I will describe a newly discovered maser, which is driven by single electron tunneling events that result in gigahertz frequency photon emission.\footnote{Y.-Y. Liu, K. D. Petersson, J. Stehlik, J. M. Taylor, and J. R. Petta, Phys. Rev. Lett. \textbf{113}, 036801 (2014).} Semiconductor double quantum dots, sometimes referred to as electrically tunable ``artificial molecules,'' serve as the gain medium and are placed inside of a high quality factor microwave cavity. Maser action is verified by comparing the statistics of the emitted microwave field above and below the maser threshold.\footnote{Y.-Y. Liu, J. Stehlik, C. Eichler, M. J. Gullans, J. M. Taylor, and J. R. Petta, Science \textbf{347}, 285 (2015).} Furthermore, by driving the cavity with a seed tone, it is possible to injection lock the maser, greatly reducing the emission linewidth. The frequency range over which the maser can be injection locked closely follows predictions from Adler's equation.\footnote{R. Adler, Proc. IRE \textbf{34}, 351 (1946).}\\[4pt] Research was performed in collaboration with Yinyu Liu, Jiri Stehlik, Christopher Eichler, Michael Gullans, and Jacob Taylor. We acknowledge support from the Sloan and Packard Foundations, ARO, DARPA, and the NSF. [Preview Abstract] |
Thursday, June 11, 2015 12:00PM - 12:30PM |
N3.00004: Strong Atom-Light Interactions in Photonic Crystals Invited Speaker: Jeff Kimble New paradigms for optical physics emerge with lattices of atoms trapped in one and two-dimensional photonic crystals [1-4]. Exemplary experimental platforms include photonic crystal waveguides [5-7] and cavities [8, 9]. Owing to their small optical loss and tight field confinement, these nanoscale dielectric devices are capable of mediating long-range atom-atom interactions using photons propagating in their guided modes. In a complimentary fashion, long-range interactions between photons can be mediated by an underlying lattice of atoms. Such systems have the potential to provide new tools for scalable quantum networks, quantum phases of light and matter, and quantum metrology. However, bringing this future of \textit{atom nanophotonics} to fruition requires the creation of an interdisciplinary toolkit for the control, manipulation, and interaction of atoms and photons with a complexity and scalability not currently possible. I will give an overview of the theoretical prospects for new physics and review experimental progress in this nascent field at the interfaces of nano-photonics, atomic physics, and quantum optics. \\[4pt] [1] J. S. Douglas, H. Habibian, C.-L. Hung, A. V. Gorshkov, H. J. Kimble, and D. E. Chang, Nature Photonics \textbf{9}, 326 (2015).\\[0pt] [2] For an introduction to this area, please refer to the video at http://phdcomics.com/comics/archive.php?comicid=1680.\\[0pt] [3] A. Gonz\'alez-Tudela, C.-L. Hung, D. E. Chang, J. I. Cirac, and H. J. Kimble, Nature Photonics \textbf{9}, 320 (2015).\\[0pt] [4] A. Gonz\'alez-Tudela, V. Paulisch, D. E. Chang, H. J. Kimble, and J. I. Cirac, (2015); available as arXiv:1504.07600.\\[0pt] [5] S.-P. Yu, J. D. Hood, J. A. Muniz, M. J. Martin, R. Norte, C.-L. Hung, S. M. Meenehan, J. D. Cohen, O. Painter, and H. J. Kimble, Applied Physics Letters \textbf{104}, 111103 (2014).\\[0pt] [6] A. Goban, C.-L. Hung, S. -P. Yu, J. D. Hood, J. A. Muniz, J. H. Lee, M. J. Martin, A. C. McClung, K. S. Choi, D. E. Chang, O. Painter, and H. J. Kimble, Nature Communications \textbf{5}, 3808 (2014).\\[0pt] [7] A. Goban, C.-L. Hung, J. D. Hood, S.-P. Yu, J. A. Muniz, O. Painter, and H. J. Kimble, available at http://arxiv.org/abs/1503.04503.\\[0pt] [8] J. D. Thompson, T. G. Tiecke, N. P. de Leon, J. Feist, A. V. Akimov, M. Gullans, A. S. Zibrov, V. Vuleti\'ic, and M. D. Lukin, Science \textbf{340}, 1202 (2013).\\[0pt] [9] T. G. Tiecke, J. D. Thompson, N. P. de Leon, L. R. Liu, V. Vuleti\'c, and M. D. Lukin, Nature \textbf{508}, 241 (2014). [Preview Abstract] |
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