Surface plasmon amplification by stimulated emission of radiation: quantum generation of coherent surface plasmons in nanosystems.
نویسندگان
چکیده
We make a step towards quantum nanoplasmonics: surface plasmon fields of a nanosystem are quantized and their stimulated emission is considered. We introduce a quantum generator for surface plasmon quanta and consider the phenomenon of surface plasmon amplification by stimulated emission of radiation (spaser). Spaser generates temporally coherent high-intensity fields of selected surface plasmon modes that can be strongly localized on the nanoscale, including dark modes that do not couple to far-zone electromagnetic fields. Applications and related phenomena are discussed.
منابع مشابه
Quantum-coherence-enhanced surface plasmon amplification by stimulated emission of radiation.
We investigate surface plasmon amplification in a silver nanoparticle coupled to an externally driven three-level gain medium and show that quantum coherence significantly enhances the generation of surface plasmons. Surface plasmon amplification by stimulated emission of radiation is achieved in the absence of population inversion on the spasing transition, which reduces the pump requirements....
متن کاملChannel spaser: Coherent excitation of one-dimensional plasmons from quantum dots located along a linear channel
Recently, a new branch of quantum optics—quantum nanoplasmonics—has arisen.1,2 Advantageous plasmon properties such as small wavelength and a high-energy concentration open new perspectives for constructing nanodevices such as waveguides, cavities, and antennas. In this regard, studies of plasmons propagating along 1D objects such as wires,3 wedges,4,5 and channels6,7 are of great interest. Los...
متن کاملMetal nanoparticle plasmons operating within a quantum lifetime.
We investigate the dynamics of a plasmonic oscillation over a metal nanoparticle when it is strongly coupled to a quantum emitter (e.g. quantum dot, molecule). We simulate the density matrix evolution for a simple model, a coupled classical-quantum oscillators system. We show that the lifetime of the plasmonic oscillations can be increased several orders of magnitude, up to the decay time of th...
متن کاملMeasurement and modeling of a complete optical absorption and scattering by coherent surface plasmon-polariton excitation using a silver thin-film grating.
We demonstrate the plasmonic analogue of a coherent photonic effect known as coherent perfect absorption. A periodically nanopatterned metal film perfectly absorbs multiple coherent light beams coupling to a single surface plasmon mode. The perfect absorbing state can be switched to a nearly perfect scattering state by tuning the phase difference between the incident beams. We theoretically exp...
متن کاملCoherent Polarization Transfer through Sub-wavelength Hole Arrays
We review a series of experiments on the optical properties of metal films perforated with arrays of sub-wavelength holes. A key experiment is the transfer of polarization entanglement under plane-wave/focused illumination, where we observed a conservation/degradation of the quantum entanglement. Surface plasmons play a prominent role in the observed extra-ordinary large transmission. This is d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review letters
دوره 90 2 شماره
صفحات -
تاریخ انتشار 2003