By Peter Michler, Alper Kiraz, Christoph Becher, Winston V. Schoenfeld, Pierre M. Petroff (auth.), Prof. Bernhard Kramer (eds.)
This quantity includes many of the invited talks of the 2001 assembly of the forged nation Physics element of the Deutsche Physikalische Gesellschaft held from March 26 to 30 in Hamburg, Germany. the themes coated mirror the current actions during this full of life area of recent physics and are hence purported to flashlight the state of the art in condensed subject physics in Germany within the 12 months 2001.
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In agreement with previous reports , in the planar resonator only small changes of this lifetime are observed, both for on- and oﬀ-resonance. For oﬀ-resonance in the uncoated resonators, the lifetimes are as well only slightly increased over the QD value. 3 ns. 5 ns is observed for the coated structures. But, in contrast, for the coated structures the oﬀ-resonance lifetime increases drastically up to ∼ 10 ns. 1ns norm. 87ns -4meV off-res. 07ns on-res. ,=0 0 1 2 3 4 -2meV QDs 0 1 2 3 4 delay time [ps] 0 1 2 3 ,=0 4 Fig.
There are two experimental observations that support the latter explanation: ﬁrst, even when the ground-state transition of the QD (1X) is oﬀ resonance the mode emission is still visible, indicating the inﬂuence of the background (see Fig. 2). 55) for P = 56 (303) W/ cm2 ). 4 Summary In conclusion, we have demonstrated heralded single photon emission from a self-assembled single InAs QD embedded in a semiconductor microdisk structure. Without coupling to a cavity mode nearly 100 % of the excitation pulses lead to the emission of a single photon with a repetition of 82 MHz.