Tip-enhanced strong coupling: Broadband room temperature cavity nano-optics with single emitter
发布日期:2018-12-24   作者:李泽云   浏览次数:165


报告题目:Tip-enhanced strong coupling: Broadband room temperature cavity nano-optics with single emitter

报告人Markus B. Raschke 教授

主持人:武愕教授

时间:1226日(周三)下午2:00

地点:理科大楼A814会议室

主办单位:精密光谱科学与技术国家重点实验室

报告摘要:

Optical cavities can enhance and control the light-matter interaction by modifying the local electromagnetic environment of a quantum emitter. Manipulating this interaction in the non-perturbative strong coupling regime opens new pathways from opto-electronic and chemical sensing to quantum information science. However, large cavity mode volumes have prevented strong coupling between dielectric cavities and single emitters under ambient conditions. We demonstrate tip-enhanced strong coupling (TESC) spectroscopy, imaging, and control based on scanning probe microscopy using plasmonic antenna-tips forming a nano-cavity with the emitter [1]. With single quantum dots we observe room temperature mod splitting up to 160 meV and anti-crossing in the energy spectra with detuning, with nanometer scale mode confinement [2].

In the extension to the infrared we achieve strong coupling of molecular vibrations through configurable optical interactions of a nanotip with an infrared resonant nanowire with hybridization and mode splitting. We observe nanotip-induced quantum interference of vibrational excitation pathways in spectroscopic nanoimaging, which we model classically as plasmonic electro-magnetically induced scattering as the phase-controlled extension of the classical analogue of electromagnetically induced transparency and absorption [2].

References

[1] K-D Park et al, Radiative control of dark excitons at room temperature by nano-optical antenna-tip Purcell effect, Nat. Nanotechnol. 13, 59 (2018).

[2] K.-D. Park, M. A. May, H. Leng, J. Wang, J. A. Kropp, T. Gougousi, M. Pelton, and M. B. Raschke, Tip-enhanced strong coupling spectroscopy and control of a single quantum emitter. (under review).

[3] E. A. Muller, B. Pollard, H. A. Bechtel, R. Adato, D. Etezadi, H. Altug, and M. B. Raschke, Nanoimaging and control of molecular vibrations through electromagnetically induced scattering reaching the strong coupling regime. ACS Photonics 5, 3594 (2018).

报告人简介:

EDUCATION AND PROFESSIONAL EXPERIENCE

University of Colorado

Department of Physics, Professor, since 2/2015, Associate Professor 2010-2014

Department of Chemistry, Affiliate Professor

JILA, Fellow Adjunct.

Research: Linear, nonlinear, and ultrafast near-field optics for imaging and spectroscopy with nanometer spatial and femtosecond temporal resolution: study and control of light-matter interaction on the nanoscale; engineering plasmonic structures for optical nanofocusing; single molecule spectroscopy; intra- and intermolecular electron and vibrational dynamics and coupling in molecular systems; and phase behavior, domains, and defects in 2D and correlated quantum materials.

University of Washington

Associate Professor of Chemistry 9/2009 – 8/2010, Adjunct Associate Professor of Physics 9/2007 – 8/2010, Assistant Professor of Chemistry 9/2006 – 8/2009

Max-Born-Institute, Berlin, Germany

Staff Scientist, Group Leader 1/2004 – 7/2006.

Postdoctoral Associate (Host: Prof. T. Elsaesser) 2002-2003.

Humboldt University, and Free University, Berlin, Germany

Instructor, Departments of Physics 2003 – 2006.

University of California at Berkeley

Postdoctoral Research Associate (Host: Prof. Y. R. Shen) 1999-2001.

Max-Planck-Institute for Quantum Optics, Garching, Germany

Technische Universität, Munich, Germany

Graduate Student, Ph.D. Physics (Advisors: U. Höfer & D. Menzel) 1995-1999.

Rutgers University

Fulbright Fellowship, M.S. Physics (Advisor: Prof. T. Madey) 1994 -1995

Universität Bayreuth, Germany

B.S.s (Vordiplom), Physics and Chemistry