Single InAs quantum dots embedded in a planar cavity, formed by mismatched sets of GaAs/AlAs distributed Bragg reflectors, can be a useful source of triggered polarization-entangled photon pairs. We demonstrate this with a fidelity exceeding 70% for the expected entangled state. Quantum dot based devices may therefore be of great use in quantum communications and quantum information processing.
REFERENCES
1.
D. F.
Walls
and G. J.
Milburn
, Quantum Optics
(Springer
, Berlin
, 1994
);D.
Bouwmeester
, A. K.
Ekert
, and A.
Zeilinger
, The Physics of Quantum Information
(Springer
, Berlin
, 2000
).2.
A. K.
Ekert
, Phys. Rev. Lett.
67
, 661
(1991
).3.
H. -J.
Briegel
, W.
Dür
, J. I.
Cirac
, and P.
Zoller
, Phys. Rev. Lett.
81
, 5932
(1998
).4.
E.
Knill
, R.
Laflamme
, and G. J.
Milburn
, Nature (London)
409
, 46
(2001
).5.
Y. H.
Shih
and C. O.
Alley
, Phys. Rev. Lett.
61
, 2921
(1988
).6.
T. E.
Kiess
, Y. H.
Shih
, A. V.
Sergienko
, and C. O.
Alley
, Phys. Rev. Lett.
71
, 3893
(1993
).7.
O.
Benson
, C.
Santori
, M.
Pelton
, and Y.
Yamamoto
, Phys. Rev. Lett.
84
, 2513
(2000
).8.
Z.
Yuan
et al., Science
295
, 102
(2002
).9.
R. M.
Stevenson
, R. M.
Thompson
, A. J.
Shields
, I.
Farrer
, B. E.
Kardynal
, D. A.
Ritchie
, and M.
Pepper
, Phys. Rev. B
66
, 081302
(R) (2002
).10.
C.
Santori
, D.
Fattal
, M.
Pelton
, G. S.
Solomon
, and Y.
Yamamoto
, Phys. Rev. B
66
, 045308
(2002
).11.
S. M.
Ulrich
, S.
Strauf
, P.
Michler
, G.
Bacher
, and A.
Forchel
, Appl. Phys. Lett.
83
, 1848
(2003
).12.
R. J.
Young
, et al., Phys. Rev. B
72
, 113305
(2005
).13.
R. M.
Stevenson
et al., Phys. Rev. B
73
, 033306
(2006
).14.
R. J.
Young
, R. M.
Stevenson
, P.
Atkinson
, K.
Cooper
, D. A.
Ritchie
, and A. J.
Shields
, New J. Phys.
8
, 29
(2006
).15.
M.
Bayer
et al., Phys. Rev. B
65
, 195315
(2002
).16.
N.
Akopian
, N. H.
Lindner
, E.
Poem
, Y.
Berlatzky
, J.
Avron
, D.
Gershoni
, B. D.
Gerardot
, and P. M.
Petroff
, Phys. Rev. Lett.
96
, 130501
(2006
).17.
B.
Urbaszek
, R. J.
Warburton
, K.
Karrai
, B. D.
Gerardot
, P. M.
Petroff
, and J. M.
Garcia
, Phys. Rev. Lett.
90
, 247403
(2003
).© 2007 American Institute of Physics.
2007
American Institute of Physics
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