TY - JOUR
T1 - Simultaneous subsecond hyperpolarization of the nuclear and electron spins of phosphorus in silicon by optical pumping of exciton transitions
AU - Yang, A.
AU - Steger, M.
AU - Sekiguchi, T.
AU - Thewalt, M. L.W.
AU - Ladd, T. D.
AU - Itoh, K. M.
AU - Riemann, H.
AU - Abrosimov, N. V.
AU - Becker, P.
AU - Pohl, H. J.
PY - 2009/6/25
Y1 - 2009/6/25
N2 - We demonstrate a method which can hyperpolarize both the electron and nuclear spins of P31 donors in Si at low field, where both would be essentially unpolarized in equilibrium. It is based on the selective ionization of donors in a specific hyperfine state by optically pumping donor bound exciton hyperfine transitions, which can be spectrally resolved in Si28. Electron and nuclear polarizations of 90% and 76%, respectively, are obtained in less than a second, providing an initialization mechanism for qubits based on these spins, and enabling further ESR and NMR studies on dilute P31 in Si28.
AB - We demonstrate a method which can hyperpolarize both the electron and nuclear spins of P31 donors in Si at low field, where both would be essentially unpolarized in equilibrium. It is based on the selective ionization of donors in a specific hyperfine state by optically pumping donor bound exciton hyperfine transitions, which can be spectrally resolved in Si28. Electron and nuclear polarizations of 90% and 76%, respectively, are obtained in less than a second, providing an initialization mechanism for qubits based on these spins, and enabling further ESR and NMR studies on dilute P31 in Si28.
UR - http://www.scopus.com/inward/record.url?scp=67649418015&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649418015&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.102.257401
DO - 10.1103/PhysRevLett.102.257401
M3 - Article
AN - SCOPUS:67649418015
SN - 0031-9007
VL - 102
JO - Physical review letters
JF - Physical review letters
IS - 25
M1 - 257401
ER -