TY - JOUR
T1 - Spontaneous two-photon emission from a single quantum dot
AU - Ota, Yasutomo
AU - Iwamoto, Satoshi
AU - Kumagai, Naoto
AU - Arakawa, Yasuhiko
PY - 2011/11/30
Y1 - 2011/11/30
N2 - Spontaneous two-photon emission from a solid-state single quantum emitter is observed. We investigated photoluminescence from the neutral biexciton in a single semiconductor quantum dot coupled with a high Q photonic crystal nanocavity. When the cavity is resonant to the half energy of the biexciton, the strong vacuum field in the cavity inspires the biexciton to simultaneously emit two photons into the mode, resulting in clear emission enhancement of the mode. Meanwhile, the suppression of other single photon emission from the biexciton was observed, as the two-photon emission process becomes faster than the others at the resonance.
AB - Spontaneous two-photon emission from a solid-state single quantum emitter is observed. We investigated photoluminescence from the neutral biexciton in a single semiconductor quantum dot coupled with a high Q photonic crystal nanocavity. When the cavity is resonant to the half energy of the biexciton, the strong vacuum field in the cavity inspires the biexciton to simultaneously emit two photons into the mode, resulting in clear emission enhancement of the mode. Meanwhile, the suppression of other single photon emission from the biexciton was observed, as the two-photon emission process becomes faster than the others at the resonance.
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U2 - 10.1103/PhysRevLett.107.233602
DO - 10.1103/PhysRevLett.107.233602
M3 - Article
C2 - 22182088
AN - SCOPUS:82455185116
SN - 0031-9007
VL - 107
JO - Physical Review Letters
JF - Physical Review Letters
IS - 23
M1 - 233602
ER -