Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Coherent superconducting quantum pump
AU - Hoehne, Felix
AU - Pashkin, Yuri A.
AU - Astafiev, Oleg V.
AU - Mottonen, Mikko
AU - Pekola, Jukka P.
AU - Tsai, JawShen
PY - 2012/4/5
Y1 - 2012/4/5
N2 - We demonstrate nonadiabatic charge pumping utilizing a sequence of coherent oscillations between a superconducting island and two reservoirs. The pumping rate for each elementary cycle is limited by the coupling between the island and the reservoirs given by the Josephson energy. Our experimental and theoretical studies show that relaxation can be employed to reset the pump in order to avoid accumulation of errors due to nonideal control pulses. Thus our results demonstrate the effects of nonadiabatic quantum pumping and dissipation.
AB - We demonstrate nonadiabatic charge pumping utilizing a sequence of coherent oscillations between a superconducting island and two reservoirs. The pumping rate for each elementary cycle is limited by the coupling between the island and the reservoirs given by the Josephson energy. Our experimental and theoretical studies show that relaxation can be employed to reset the pump in order to avoid accumulation of errors due to nonideal control pulses. Thus our results demonstrate the effects of nonadiabatic quantum pumping and dissipation.
U2 - 10.1103/PhysRevB.85.140504
DO - 10.1103/PhysRevB.85.140504
M3 - Journal article
VL - 85
SP - -
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 14
M1 - 140504
ER -