Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Entangled photon pairs from a quantum dot source
AU - Stevenson, R. M.
AU - Young, R. J.
AU - Atkinson, P.
AU - Cooper, K.
AU - Ritchie, D. A.
AU - Shields, A. J.
PY - 2006/12
Y1 - 2006/12
N2 - We present the results of recent experiments designed to manipulate the splitting in quantum dots, to eradicate the which-path information that prevents entangled photon emission. We demonstrate that dots with splitting within the homogeneous linewidth can be grown directly by carefully controlling the thickness of the dot layer. Polarization dependent correlation measurements on these dots show characteristic features of entanglement, only present for dots with small splitting. Our results indicate that for the first time, we have observed triggered entangled photon pair emission from a quantum dot. The ability to trigger the emission of just one photon pair has advantages over other schemes to generate entangled photons, including scalability of the applications. Finally, we note that the device, once optimized, could be implemented by a simple LED-like structure. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
AB - We present the results of recent experiments designed to manipulate the splitting in quantum dots, to eradicate the which-path information that prevents entangled photon emission. We demonstrate that dots with splitting within the homogeneous linewidth can be grown directly by carefully controlling the thickness of the dot layer. Polarization dependent correlation measurements on these dots show characteristic features of entanglement, only present for dots with small splitting. Our results indicate that for the first time, we have observed triggered entangled photon pair emission from a quantum dot. The ability to trigger the emission of just one photon pair has advantages over other schemes to generate entangled photons, including scalability of the applications. Finally, we note that the device, once optimized, could be implemented by a simple LED-like structure. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KW - 03.67.Mn
KW - 78.55.Cr
KW - 78.67.Hc
U2 - 10.1002/pssc.200671522
DO - 10.1002/pssc.200671522
M3 - Journal article
VL - 3
SP - 3697
EP - 3701
JO - Physica Status Solidi C
JF - Physica Status Solidi C
SN - 1610-1634
IS - 11
T2 - 4th International Conference on Semiconductor Quantum Dots (QD 2006)
Y2 - 1 May 2006 through 5 May 2006
ER -